Service manual

ManualsBrandsMotorola ManualsTwo-Way Radio200

CP150

™

/CP200

™

Commercial Series

Two-Way Radio Detailed Service Manual

MOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc.

All other product or service names are the property of their respective owners.

*6880309N62*

6880309N62-C

Summary of content (252 pages)

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MOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc. All other product or service names are the property of their respective owners. © 2005 Motorola, Inc. All rights reserved. Printed in U.S.A.
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Product Safety and RF Exposure Compliance ! Before using this product, read the operating instructions for safe usage contained in the Product Safety and RF Exposure booklet enclosed with your radio. Caution ATTENTION! This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements.
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i Table of Contents Foreword Product Safety and RF Exposure Compliance .......................................................................... inside cover Computer Software Copyrights ................................................................................................. inside cover Document Copyrights ................................................................................................................ inside cover Disclaimer........................................................
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ii Table of Contents 4.3 4.4 4.2.1 Receiver Front-End........................................................................................................... 4-1 4.2.2 Receiver Back-End ........................................................................................................... 4-2 VHF Transmitter............................................................................................................................. 4-3 4.3.1 Transmit Power Amplifier ...............................
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Table of Contents iii Figure 7-6. Figure 7-7. VHF (136-162 MHz) Synthesizer Schematic Diagram (8486769Z02-A).......................... 7-8 VHF (136-162 MHz) Voltage Controlled Oscillator Schematic Diagram (8486769Z02-A)................................................................................................. 7-9 Figure 7-8. VHF (136-162 MHz) Transmitter and Power Control Schematic Diagram (8486769Z02-A)...............................................................................................
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iv Table of Contents Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) .............................................. 7-37 Figure 7-39. Figure 7-40. Figure 7-41. Figure 7-42. Figure 7-43. VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram (8486342Z13-C) ......... 7-37 VHF (146-174 MHz) Receiver Front End Schematic Diagram (8486342Z13-C)............ 7-38 VHF (146-174 MHz) Receiver Back End Schematic Diagram (8486342Z13-C) ............
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Table of Contents v 8.4.2 Voltage Controlled Oscillator (VCO) ................................................................................. 8-6 Chapter 9 438-470 MHz UHF Theory Of Operation ............................ 9-1 9.1 9.2 9.3 9.4 Introduction .................................................................................................................................... 9-1 UHF Receiver .................................................................................................
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vi Table of Contents Chapter 12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) .............................................. 12-5 Figure 12-3. Figure 12-4. Figure 12-5. Figure 12-6. Figure 12-7. UHF (403-440 MHz) Radio Circuit Block Diagram (8486635Z03-O).............................. 12-5 UHF (403-440 MHz) Receiver Front End Schematic Diagram (8486635Z03-O) ........... 12-6 UHF (403-440 MHz) Receiver Back End Schematic Diagram (8486635Z03-O)............
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Table of Contents vii Figure 12-35. UHF (438-470 MHz) Audio Circuitry Schematic Diagram (8486348Z13-C)................. 12-45 Figure 12-36. UHF (438-470 MHz) DC Regulation Schematic Diagram (8486348Z13-C)................. 12-46 Figure 12-37. UHF (438-470 MHz) Board Component Side View (8486348Z13-C) .......................... 12-47 Figure 12-38. UHF (438-470 MHz) Board Solder Side View (8486348Z13-C)................................... 12-48 UHF (438-470 MHz) Radio Parts List (8486348Z13-C) ...............
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viii Table of Contents List of Figures Figure 1-1. Figure 1-2. Figure 2-1. Figure 4-1. Figure 4-2. Figure 4-3. Figure 4-4. Figure 4-5. Figure 5-1. Figure 5-2. Figure 5-3. Figure 5-4. Figure 5-5. Figure 7-1. Figure 7-2. Figure 7-3. Figure 7-4. Figure 7-5. Figure 7-6. Figure 7-7. Figure 7-8. Figure 7-9. Figure 7-10. Figure 7-11. Figure 7-12. Figure 7-13. Figure 7-14. Figure 7-15. Figure 7-16. Figure 7-17. Figure 7-18. Figure 7-19. Figure 7-20. Figure 7-21. Figure 7-22. Figure 7-23. Figure 7-24. Figure 7-25.
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Table of Contents ix Figure 7-33. Figure 7-34. Figure 7-35. Figure 7-36. Figure 7-37. Figure 7-38. Figure 7-39. Figure 7-40. Figure 7-41. Figure 7-42. Figure 7-43. VHF (146-174 MHz) Controller Interconnect Schematic Diagram (8486342Z09-A) ...... 7-27 VHF (146-174 MHz) Microprocessor Circuitry Schematic Diagram (8486342Z09-A) ... 7-28 VHF (146-174 MHz) Audio Circuitry Schematic Diagram (8486342Z09-A) ................... 7-29 VHF (146-174 MHz) DC Regulation Schematic Diagram (8486342Z09-A) ................
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x Table of Contents Figure 12-6. Figure 12-7. Figure 12-8. Figure 12-9. Figure 12-10. Figure 12-11. Figure 12-12. Figure 12-13. Figure 12-14. Figure 12-15. Figure 12-16. Figure 12-17. Figure 12-18. Figure 12-19. Figure 12-20. Figure 12-21. Figure 12-22. Figure 12-23. Figure 12-24. Figure 12-25. Figure 12-26. Figure 12-27. Figure 12-28. Figure 12-29. Figure 12-30. Figure 12-31. Figure 12-32. Figure 12-33. Figure 12-34. Figure 12-35. Figure 12-36. Figure 12-37. Figure 12-38. Figure 12-39. Figure 12-40.
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Table of Contents xi List of Tables Table 1-1. Table 1-2. Table 1-3. Table 2-1. Table 3-1. Table 3-2. Table 6-1. Table 6-2. Table 6-3. Table 6-4. Table 11-1. Table 11-2. Table 11-3. Table 11-4. Recommended Test Equipment....................................................................................... 1-1 Service Aids ..................................................................................................................... 1-2 Recommended Service Tools ....................................
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xii June, 2005 Table of Contents 6880309N62-C
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Chapter 1 Test Equipment, Service Aids, and Service Tools 1.1 Test Equipment Table 1-1 lists test equipment required to service the CP150/CP200 Radios. Table 1-1. Recommended Test Equipment Motorola Part No.
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1-2 1.2 Test Equipment, Service Aids, and Service Tools: Service Aids Service Aids Table 1-2 lists service aids recommended for working on the CP150/CP200 Radios. While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed. Table 1-2. Service Aids Motorola Part No. Description Application RLN4460 Portable Test Set Enables connection to the audio/accessory jack.
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Test Equipment, Service Aids, and Service Tools: Service Aids 1-3 Table 1-3. Recommended Service Tools (Continued) Motorola Part No. Description 0180386A78 Illuminated magnifying glass with lens attachment 0180302E51 Master lens system 0180386A82 Anti-static grounding kit 6684253C72 Straight prober 6680384A98 Brush 1010041A86 Solder (RMA type), 63/67, 0.5mm diameter, 1 lb.
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1-4 Test Equipment, Service Aids, and Service Tools: Service Aids Programming/Test Cable 25 POSITION MALE CONNECTOR 25 POSITION FEMALE CONNECTOR P2 P3 36.0” CABLE 36.0” CABLE P1 Figure 1-1. Programming/Test Cable P2 25 pin Male D Connector Components molded inside P1 2.5mm stereo and 3.5mm 3.5mm Tip (Speaker +) 1 3.5mm Sleeve 2 2.5mm Tip (Microphone) 5 2.5mm 3 1 5 Orange Blue 47 ohm 24 7 33K 20 8 15 16 9 White 2.
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Chapter 2 DC Power Distribution 2.1 DC Regulation and Distribution A block diagram of the DC power distribution throughout the radio is shown in Figure 2-1. Accessories 20 pin Connector Audio Power Amplifier Keypad/Option Board UNSWB+ 7.5V Battery SWB+ Fuse MECH. SWB+ 3.3V Reg.
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2-2 DC Power Distribution: DC Regulation and Distribution When the radio is turned on, SWB+ is present and is applied to: • transistor switch Q494 (pins 1 and 6) which turns on Q493 • RX audio power amplifier U490 • voltage divider R420/R421 and port PE0, a microprocessor A/D input which measures battery voltage and radio on/off status The output of FET switch Q493 is applied to the control pins of regulators U310, U320 and U330, turning them on. The following regulators are used: Table 2-1.
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Chapter 3 Controller Theory of Operation 3.
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3-2 Controller Theory of Operation: Controller 3.1.1.1 Memory Usage Radio operation is controlled by software that is stored in external Flash ROM memory (U404). Radio parameters and customer specific information is stored in external EEPROM (U402). The operating status of the radio is maintained in RAM located within the microprocessor. When the radio is turned off, the operating status of the radio is written to EEPROM before operating voltage is removed from the microprocessor. See section “3.1.1.
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Controller Theory of Operation: Controller 3-3 In order for each circuit block to respond only to the data intended for it, each peripheral has its own chip select (or chip enable) line. The device will only respond to data when its enable line is pulled low by one of the microprocessor ports, as follows: • port PD5 (U401 pin 2) for the audio filter IC • port PH0 (U401 pin 47) for the synthesizer IC • port PD6 (U401 pin 3) for the serial EEPROM. 3.1.1.
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3-4 Controller Theory of Operation: Controller The microprocessor reset line (pin 94) can be controlled directly by the digital 3.3 V regulator (U320 pin 7), the microphone jack (part of accessory connector J471) via Q472 and Q471, and the microprocessor itself. U320 pulls the reset line low if the digital 3.3 V source loses regulation.
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Controller Theory of Operation: Controller 3-5 • 2.5 volt dc reference source • Microprocessor clock generation (from the 16.8 MHz reference oscillator input) The parameters of U451 that are programmable are selected by the microprocessor via the CLOCK (U451 pin 21), DATA (U451 pin 22) and chip enable (U451 pin 20) lines. RX audio buffer U510 amplifies the audio level from the DEMOD output of the IFIC before being applied to the audio filter IC input (DISC, U451 pin 2).
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3-6 Controller Theory of Operation: Controller 3.1.2.4 PTT Circuits The internal side-mounted PTT switch (S441) is sensed directly by microprocessor port PJ0 (U401 pin 71). External mic PTT is sensed by measuring the current drawn through the accessory connector (J471-4) by the mic cartridge (which is in series with the accessory PTT switch).
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Chapter 4 136-162 MHz VHF Theory Of Operation 4.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual. 4.2 VHF Receiver The VHF receiver covers the range of 136-162 MHz and provides switchable IF bandwidth for use with 12.5 kHz or 20/25 kHz channel spacing systems. The receiver is divided into two major blocks as shown in Figure 4-1.
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4-2 136-162 MHz VHF Theory Of Operation: VHF Receiver constant at 6.2 mA regardless of device and temperature variations, for optimum dynamic range and noise figure. The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 3-pole series-coupled resonator design having a 3 dB bandwidth of 54 MHz and insertion loss of 1.8 dB. This filter has an image rejection of 40 dB at 226 MHz, with increasing attenuation at higher frequencies.
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136-162 MHz VHF Theory Of Operation: VHF Transmitter 4.3 4-3 VHF Transmitter The VHF transmitter covers the range of 136-162 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (5 watts) and low power (1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in Figure 4-2.
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4-4 4.3.4 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Antenna Matching Network The harmonic filter presents a 50 Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. 4.3.
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136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 4-5 Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and applied to the loop divider to provide the low-port modulation.
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4-6 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit.
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136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 4-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO.
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4-8 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C
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Chapter 5 146-174 MHz VHF Theory Of Operation 5.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual. 5.2 VHF Receiver The VHF receiver covers the range of 146-174 MHz and provides switchable IF bandwidth for use with 12.5 kHz or 20/25 kHz channel spacing systems. The receiver is divided into two major blocks as shown in Figure 5-1.
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5-2 146-174 MHz VHF Theory Of Operation: VHF Receiver constant at 6.2 mA regardless of device and temperature variations, for optimum dynamic range and noise figure. The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 3-pole series-coupled resonator design having a 3 dB bandwidth of 58 MHz and insertion loss of 1.8 dB. This filter has an image rejection of 42 dB at 235 MHz, with increasing attenuation at higher frequencies.
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146-174 MHz VHF Theory Of Operation: VHF Transmitter 5.3 5-3 VHF Transmitter The VHF transmitter covers the range of 146-174 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (5 watts) and low power (1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in Figure 5-2.
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5-4 5.3.4 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Antenna Matching Network The harmonic filter presents a 50 Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. 5.3.
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146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 5-5 Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level applied to the synthesizer IC. Internally the audio is digitized by the Fractional-N synthesizer and applied to the loop divider to provide the low-port modulation.
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5-6 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit.
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146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 5-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO.
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5-8 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C
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Chapter 6 VHF Troubleshooting Tables 6.1 Troubleshooting Table for Receiver Table 6-1. Troubleshooting Table for Receiver Symptom Radio Dead (no turn-on beep, no LED indication) Possible Causes Procedure Corrective Action 1. Battery dead or defective. Substitute known good battery or battery eliminator. Charge or replace battery. 2. Defective battery contacts. Inspect battery contacts for corrosion or bent terminals. Clean/repair/replace J301. 3. Blown fuse Check voltage on each side of fuse.
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6-2 VHF Troubleshooting Tables: Troubleshooting Table for Receiver Table 6-1. Troubleshooting Table for Receiver (Continued) Symptom No Audio No Receive (squelch noise present) Possible Causes Corrective Action 1. Synthesizer out of lock Verify U201-4 is at 3 V dc. Troubleshoot synthesizer/VCO circuits. 2. Defective IFIC Verify audio is present at U51-8. Check Q70, Y70, U51. 3. RX audio buffer fault Verify audio is present at U451-2. Check U510 and associated parts. 4.
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VHF Troubleshooting Tables: Troubleshooting Table for Synthesizer 6.2 6-3 Troubleshooting Table for Synthesizer Table 6-2. Troubleshooting Table for Synthesizer Symptom Synthesizer Out of Lock (RX mode only) Synthesizer Out of Lock (TX mode only) Synthesizer Out of Lock (RX and TX modes) Possible Causes 1. VCO fault Corrective Action Verify oscillator is working, check RF level at U251-10 per schematic. Check VCO tank components connected to U251-5 and 6.
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6-4 VHF Troubleshooting Tables: Troubleshooting Table for Transmitter 6.3 Troubleshooting Table for Transmitter Table 6-3. Troubleshooting Table for Transmitter Symptom No Transmit (no TX LED indication) No Transmit (TX LED indication OK) June, 2005 Possible Causes Procedure Corrective Action 1. PTT switch defective. Verify U401-71 goes low when PTT is pressed. Replace PTT switch S441. 2. EXT MIC PTT fault Verify U401-72 goes low when J471- Check/replace Q470, L471 etc. 4 is grounded. 1.
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VHF Troubleshooting Tables: Troubleshooting Table for Transmitter 6-5 Table 6-3. Troubleshooting Table for Transmitter (Continued) Symptom Low Power Possible Causes Procedure 1. Low TX injection Check that RF level at jct. R100/ R101 per schematic. Check U251, L291-292, C290291. 2. Low gain in TX stage Verify dc voltage at Q100-E is ~1.3 V (VHF) or ~0.5 V (UHF). Verify 5T voltage is correct. Troubleshoot Q100 circuitry. Verify that RF level at U110-1 is approx. 1 V (VHF) or 1.6 V (UHF).
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6-6 VHF Troubleshooting Tables: Troubleshooting Table for Transmitter Table 6-3. Troubleshooting Table for Transmitter (Continued) Symptom No EXT MIC audio Possible Causes Procedure 1. Mic bias fault Verify approx 1.8 V dc across EXT MIC cartridge in TX mode. Verify audio present (~10 mV rms) when speaking into mic. Check Q470. R475, R477, L471. Check VR473, VR475, D470 for shorts. 2. Audio path fault Verify mic audio present (~10 mV rms) at U451-46. Check L471, C470.
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6.4 6-7 Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals IC Designator Pin U51 IFIC 1 RF input 44.85 MHz 1.20 2 RF input decoupling 1.20 3 2nd LO osc output 4.02 4 2nd LO osc input 4.60 5 RSSI output 0.74 6 Vcc 4.70 7 Audio feedback 0.89 8 Audio output 1.44 DEMOD to stage U510 9 RSSI feedback 0.
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6-8 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U110 RF Power Amp 1 RF input 2 Vgg (gate bias) 3 Vdd 4 RF output 5 Ground 1 Unit 1 output 4.20 (typ) (TX mode) (5.8 V typ at VHF) 2 Unit 1 (-) input 2.39 (typ) (TX mode) 3 Unit 1 (+) input 2.39 (typ) (TX mode) 4 Ground 5 Unit 2 (+) input 3.30 (typ) (TX mode) 6 Unit 2 (-) input 3.
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-9 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U201 Freq Synthesizer 24 Ref osc XTAL2 25 Ref osc warp output 3.00 26 Superfilter cap 4.48 27 Superfilter base (NU) 3.76 28 Superfilter output 4.52 29 NC2 30 Superfilter input 31 NC3 32 Prescaler input 1.97 33 Prescaler ground GND 34 Prescaler Vdd 2.99 35 Prescaler Vref (NU) 1.97 36 Digital Vdd 2.
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6-10 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U251 VCO / Buffer 12 Prescaler output 2.26 13 TX switch output (NU) 0.06 14 Vcc_BUFFERS 3.00 15 TX VCO emitter 0 (RX mode) 16 TX VCO base 0 (RX mode) 17 GND_LOGIC GND 18 Vcc_LOGIC 3.00 19 TRB input 0.03 20 FLIP input GND 1 Vin 7.48 2 Ground GND 3 Control input 7.48 4 Bypass capacitor 1.
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-11 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 10 PB1_ADDR9 3.05 11 PB2_ADDR10 0.16 12 VDD 3.23 13 VSS GND 14 PBO_ADDR8 3.05 15 PB5_ADDR13 0.13 16 PG1_XA14 0.20 17 PG4_XA17 3.17 18 PG5_XA18 0 19 PG3_XA16 3.21 20 PG2_XA15 0.30 21 PB4_ADDR12 0.22 22 PF7_ADDR7 3.03 23 PF6_ADDR6 3.08 24 PF5_ADDR5 3.06 25 PF4_ADDR4 0.
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6-12 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 46 PH1_PW2 3.00 47 PH0_PW1 3.23 48 XIRQ 3.00 49 PI7 1.48 RX enable 50 PI6 0.01 TX enable 51 PI5 3.23 52 PI4 0 Green LED enable 53 PI3 0 Red LED enable 54 PI2 0 55 PI1 0 56 PI0 2.98 Lock detect from U201-4 57 MODB_VSTBY 3.22 Boot mode enable 58 MODA_LIR 3.12 59 AVDD 3.
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-13 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 82 PA3_IC4_OC5_OC1 83 PA4_OC4_OC1 0 Squelch detect input 84 PA5_OC3_OC1 0 Channel activity input 85 PA6_OC2_OC1 0 86 PA7_PA1_OC1 0 87 VSSR GND 88 VDDR 3.23 89 ECLK (NU) 1.60 90 EXTAL 1.70 Clock from U451-28 91 XTAL 1.40 Not used 92 VDDSYN 0 93 XFC (NU) 0 94 RESET 3.
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6-14 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U404 Flash ROM 10 A16 3.17 11 A15 0.30 12 A12 0.22 13 A7 3.03 14 A6 3.08 15 A5 3.06 16 A4 0 17 A3 0.24 18 A2 3.08 19 A1 3.05 20 A0 3.05 21 D0 0.69 22 D1 0.94 23 D2 1.08 24 GND GND 25 D3 0.78 26 D4 0.59 27 D5 0.66 28 D6 0.67 29 D7 0.75 30 EN_CE 3.01 31 A10 0.
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VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-15 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U451 ASFIC_CMP 14 GCB1 general purpose output 0 15 GCB0 general purpose output 3.00 16 Squelch channel activity output 0 To U401-84 17 Squelch detect digital output 0 To U401-83 18 PL/low speed data I/O 1.50 19 High speed data I/O 3.00 20 Chip select 3.23 21 Serial clock input 0 22 Serial data input 3.
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6-16 Notes: VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U480 Dual Opamp 1 Unit 1 output 2.48 2 Unit 1 (-) input 2.48 3 Unit 1 (+) input 2.46 4 Ground GND 5 Unit 2 (+) input 0.28 6 Unit 2 (-) input 0.29 7 Unit 2 output 8 Vcc 4.96 1 Enable/shutdown 0.12 (Unsquelched) 2 Bias reference 3.26 (Unsquelched) 3 (+) input 3.26 (Unsquelched) 4 (-) input 3.
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VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-5 Chapter 7 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) USWB+ 5V 5T 5R 3V 5T 5R USWB+ 5V 5T 3V 5R 5T 5V USWB+ USWB+ TX_ENA TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RX_BE IF_IN IF_OUT RX_FE_VHF_R1 RSSI RX_OUT RX_INJ RSSI RX_IN TX_VHF_R1 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_VHF_R1 V_SF V_STEER V_SF V
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7-6 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 5.0V (Rx) 0V (Tx) 5R FE_5R R20 6.8K 1% Q22 UMT1 1 C26 1000pF R21 100 3.95V (Rx) 4 500mV (RF) 2 5 3.95V (Rx) IF_OUT L52 560nH 6 3 3.38V (Rx) C20 1000pF R23 22K R22 6.8K R51 51 C25 1000pF L22 100nH 2.0V (Rx) C99 0.1uF L51 150nH 3.9V (Rx) 700mV (RF) C31 36pF C29 10pF R24 750 L31 68nH C33 27pF L32 68nH C35 33pF C2 43pF L1 68nH C5 3.
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VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-7 RX Back End (Overtone) 7 1 C68 U52-1 TC7W04F FL53 CFWC455E R65 39K 0.1uF 1 IN R66 20K OUT 2 0V for 12.5kHz C69 R63 39K D51 0.1uF 2 1 IN 1 SH50 SHIELD 8 U52-4 PWR_GND 3 5 SH52 SHIELD 1 GND 3 2 C74 R62 3.3K NC VCC 1 OUT 2 R67 20K GND1 U52-3 TC7W04F D52 R64 20K FL54 CFWC455G 3 5V 4 2 6 R60 2.4K 1 3 4 1 IN 4 C63 C62 FL52 FLTR 9180468V04 0.1uF 0.
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7-8 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) V_SF FN_V_SF C232 0.1uF C231 1000pF R230 110K 4.5V C233 4.
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VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-9 V_SF V_SF 4.5V L270 560nH VCO_VSF R273 300 3V C270 1200pF R270 18 C274 0.1uF VCO_3V C292 1200pF C285 0.1uF C272 0.1uF L282 47nH 6 16 C254 6pF L253 100nH 15 C256 10pF 1.
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7-10 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) 3 R171 1 TX_ENA PA_TX_ENA 6.8K 0.15 V (Tx) Q171 MMBT3904 4 1.8V (Tx) 5 6 Q170 EMB10 2 R524 10K 3 2 1 0 V (Rx) 7.25 V (Tx) C172 1500pF 0 V (Rx) C157 0.1uF 7.3 V (Tx) C154 1500pF C155 0.1uF R152 100K 1% R158 1.5K R153 100K 1% C151 1500pF C156 .01uF Q150 2.5 V (Low) 3 8 U151 57R01 C150 1500pF 6 7 1 5 3.0 V (Hi) 8 TP150 R157 5.
PAGE 65
SW_B+ 5V 3V 5V 3V 7-11 SW_B+ VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD DEMOD OPT_RX_AUD_SEND_DETECTOR CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN BW_SEL BW_SEL CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL D3_3V SW_B+ 14 13 12 11 10 9 8 7 6 5 C500 1000pF BATT_CHARGE RESET SCI ASF
PAGE 66
7-12 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) D3_3V R416 20K 1 R410 10K R417 10K C418 0.1uF D3_3V TP405 D3_3V D425 D3_3V NC 1 6 SCI R411 820 2 D3_3V 3 1 TP402 4 R406 220K Q425 R401 300K R419 4.7K D3_3V Q426 100K R407 Q410 R412 100K C412 1000pF C413 0.1uF 1 6 1 3 7 5 SCK R408 100K SO WP 4 R403 10K CS D3_3V R402 10K TP401 8 VCC C411 0.
PAGE 67
VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-13 150 mV RMS (25 kHz) (Rx) 75 mv RMS (12.5 kHz) (Rx) R523 10K R516 NU C512 6.8pF R522 100K C514 16pF R512 150K 4 2 R514 100K 3 Q520-2 IMX1 5V_A 1 R511 100K 5 2 DEMOD 6 8 1 R513 6 8 3 R515 7 4 5V_A OPT_RX_AUD_SEND_DETECTOR 4 U510-1 LM2904 C513 220pF C511 220pF VHF UHF Not Placed 100k R515 Not Placed 0 R516 Not Placed Not Placed R513 R517 0 R518 220K Q520-1 IMX1 C518 0.1uF 5 C460 0.
PAGE 68
7-14 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) USWB+ U310 TK71750S 7.5 V 5V F301 3A 5V GND POS NEG DATA 1 5 VIN VOUT 3 CTRL 4 BYPASS NC 2 C301 390pF J301 VR301 C303 33uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 MMBZ5250B 20V R313 5.1K R312 20K R310 100K 5 V (Rx) 0 V (Tx) 0 V (Rx) 5 V (Tx) C315 1200pF RX_ENA 3.
PAGE 69
VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-15 2 3 J470 R469 C476 FL53 C426 C473 C489 L471 D470 3 1 U480 VR302 R171 VR475 3 8 L281 C92 R248 U110 C6 L4 C4 C7 C117 4 C1 J140 C9 L3 M140 L2 CR1 C2 C3 SH1 C24 L21 L1 C5 C22 C32 C233 C230 C33 R25 C36 R26 C8 L31 3 R22 Q21 L22 C30 C35 L32 C34 C31 L33 R24 C25 C29 C23 C241 R221 R205 R220 C219 C218 C231 C214 C202 5 C113 C216 25 R223 R417 13 R419 C419 C412
PAGE 70
TP402 TP401 TP405 D221 Y202 4 TP302 4 Q410 3 31 32 2 Y201 D220 2 L51 J460 SH400 R413 R430 C225 R422 30 28 29 29 C447 R415 C411 C416 C405 R460 C462 R451 C456 E453 C497 C467 R519 C519 R520 4 Q471 3 4 1 U510 8 5 TP403 R464 C463 R518 TP301 C464 C452 C511 R512 R517 R515 C275 C459 R516 R275 C512 Q520 R523 C272 U251 20 R511 C453 C457 R321 R320 C320 5 8 U320 4 C323 TP404 R441 R418 C414 C444 C443 C442 C441 C440 C445 R412 C277 L276 SH251 1 R273 R271
PAGE 71
VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) VHF (136-162 MHz) Radio Parts List (8486769Z02-A) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C20 C22 C23 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C40 C41 C42 C43 C44 C51 C52 C53 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 Motorola Part No.
PAGE 72
7-18 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) Circuit Ref C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C425 C426 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 Motorola Part No.
PAGE 73
VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) Circuit Ref Q520 R20 R21 R22 R23 R24 R25 R26 R40 R51 R52 R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 Motorola Part No.
PAGE 74
7-20 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) Circuit Ref Motorola Part No.
PAGE 75
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-21 Chapter 7 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ 5V 5T 5R 3V 5T 5R USWB+ 5V 5T 3V 5R 5T 5V USWB+ USWB+ TX_ENA TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RX_BE IF_IN IF_OUT RX_FE_VHF_R1 RSSI RX_OUT RX_INJ RSSI RX_IN TX_VHF_R1 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_VHF_R1 V_SF V_STEER V_SF VCO_
PAGE 76
7-22 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) C20 1000pF R23 22K R22 6.8K C99 0.1uF C4 18pF C5 3.3pF C6 22pF L4 68nH C8 30pF R26 0 C22 1000pF 125 mV (RF) 3 L2 68nH C3 47pF L3 68nH C9 NU C7 33pF 1 C23 1000pF 0.74V (Rx) 1 2 C31 36pF C29 10pF R24 750 L31 68nH C33 27pF L32 68nH C35 33pF L33 68nH 485mV (RF) C24 NU 4 3 2 3 C32 68pF C30 30pF 1 6 C34 68pF C36 30pF 2 RF BALUN T41 Q21 BFS540 L21 NU C51 82pF L51 150nH 3.
PAGE 77
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-23 RX Back End (Overtone) 7 1 C68 U52-1 TC7W04F FL53 CFWC455E R65 39K 0.1uF 1 IN R66 20K OUT 2 0V for 12.5kHz C69 R63 39K D51 0.1uF 2 1 IN 1 SH50 SHIELD 8 U52-4 PWR_GND 3 5 SH52 SHIELD 1 GND 3 2 C74 R62 3.3K R67 20K NC VCC 1 OUT 2 GND1 U52-3 TC7W04F D52 R64 20K FL54 CFWC455G 3 5V 4 2 6 R60 2.4K 1 3 4 1 IN OU T 4 C62 FL52 FLTR 9180468V04 C63 0.1uF 0.
PAGE 78
7-24 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) V_SF FN_V_SF C232 0.1uF C231 1000pF R230 110K 4.5V C233 4.
PAGE 79
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-25 V_SF V_SF 4.5V L270 560nH VCO_VSF R273 300 3V C270 1200pF R270 18 C274 0.1uF VCO_3V C292 1200pF C285 0.1uF C272 0.1uF L282 47nH 6 16 C254 6pF L253 100nH 15 C256 10pF 1.
PAGE 80
7-26 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) 3 R171 1 TX_ENA PA_TX_ENA 6.8K 0.15 V (Tx) Q171 MMBT3904 4 1.8V (Tx) 5 6 Q170 EMB10 2 R524 10K 3 2 1 0 V (Rx) 7.25 V (Tx) C172 1500pF 0 V (Rx) C157 0.1uF 7.3 V (Tx) C154 1500pF C155 0.1uF R152 100K 1% R158 1.5K R153 100K 1% C151 1500pF C156 .01uF Q150 2.5 V (Low) 3 U151 57R01 C150 1500pF 6 8 7 1 5 3.0 V (Hi) 8 TP150 R157 5.
PAGE 81
SW_B+ 5V 3V 5V 3V 7-27 SW_B+ VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET OPT_RX_AUD_SEND_DETECTOR DEMOD DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN BW_SEL BW_SEL CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL D3_3V SW_B+ 14 13 12 11 10 9 8 7 6 5 C500 1000pF BATT_CHARGE RESET SCI ASFIC_
PAGE 82
7-28 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) D3_3V R410 10K R417 10K R416 20K 1 C418 0.1uF D3_3V TP405 D3_3V D425 D3_3V NC 1 6 SCI R411 820 2 D3_3V 4 3 1 TP402 R406 220K Q425 R401 300K R419 4.7K D3_3V Q426 100K R407 Q410 R412 100K C412 1000pF C413 0.1uF 1 8 6 1 3 7 5 SCK R408 100K SO WP 4 R403 10K CS D3_3V R402 10K TP401 VCC C411 0.1uF 2 LSIO R405 2 U425 LMC7101BI 1 Q427 3 5 HOLD SI 4 U402 X25128-2.
PAGE 83
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-29 150 mV RMS (25 kHz) (Rx) 75 mv RMS (12.5 kHz) (Rx ) R523 10K R516 NU C512 6.8pF R522 100K C514 16pF R512 150K 4 2 R514 100K 3 Q520-2 IMX1 5V_A 1 R511 100K 5 2 DEMOD 6 8 1 R513 8 6 R515 7 3 4 5V_A OPT_RX_AUD_SEND_DETEC TOR 4 U510-1 LM2904 C511 220pF VHF UHF R513 Not Placed 100k R515 Not Placed R516 Not Placed Not Placed R517 0 Not Placed R518 220K C513 220pF Q520-1 IMX1 C518 0.
PAGE 84
7-30 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ U310 TK71750S 7.5 V F301 3A 5V 5V GND POS NEG DATA 5 1 VIN VOUT 3 CTRL 4 BYPASS NC 2 C301 390pF J301 VR301 C303 33uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C306 .01uF C305 100pF VR302 MMBZ5250B 20V R313 5.1K R312 20K R310 100K 5 V (Rx) 0 V (Tx) 0 V (Rx) 5 V (Tx) C315 1200pF RX_ENA 3.
PAGE 85
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-31 D301 R469 J470 C476 FL53 C473 2 4 U480 R489 VR475 5 8 E452 4 2 1 C S440 C C306 2 J301 SH253 Q280 L283 2 1 R482 VR473 VR302 L471 Q171 R481 C482 3 R524 3 C286 C282 R280 R61 8 D470 C301 R171 R63 C69 U52 R483 VR301 4 C254 SH250 VR110 8 L281 C112 2 C91 C92 5 U110 C113 C4 C2 C3 C7 L3 4 J140 CR1 M140 C117 R26 C8 L2 L21 L1 C5 L31 C9 C24 R25 C33 C32 C230 C233 L33
PAGE 86
7-32 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) C134 L131 C133 TP150 SH100 L110 R111 C107 C105 C496 C479 D491 R509 R485 C481 R484 Q482 R498 Q493 Q481 VR474 C484 4 3 2 R487 R508 R495 R499 R497 C495 R494 8 Q490 R493 5 U511 3 4 1 U490 C499 R490 C483 R492 R491 R486 C492 4 C472 R488 C498 C490 C474 R477 3 Q100 D440 C102 2 4 L103 C106 L100 C108 C101 R104 C141 C137 C136 L121 R105 R106 L101 2 R311 C314 R310 TP404 C316
PAGE 87
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) VHF (136-162 MHz) Radio Parts List (8486769Z04-C) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C20 C22 C23 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C40 C41 C42 C43 C44 C51 C52 C53 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 Motorola Part No.
PAGE 88
7-34 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C425 C426 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 Motorola Part No.
PAGE 89
VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 R158 R162 R171 R202 R205 R206 R212 Motorola Part No.
PAGE 90
7-36 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref T41 T42 U51 U52 U110 U150 U151 U201 U251 U310 U320 U330 U401 U402 U403 U404 U425 U451 U480 U490 U510 U511 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201 Y202 Motorola Part No.
PAGE 91
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-21 Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) USWB+ 5V 5T 5R 3V 5T 5R USWB+ 5V 5T 3V 5R 5T 5V USWB+ USWB+ TX_ENA TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RSSI RX_BE IF_IN IF_OUT RX_FE_VHF_R2 RX_OUT RX_INJ RSSI RX_IN TX_VHF_R2 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_VHF_R2 V_SF V_STEER V_SF
PAGE 92
7-22 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 5.0 V (RX) 0 V (TX) 5R FE_5R R20 6.8K 1% R21 150 C26 1000pF 3.95 V (RX) Q22 UMT1 1 4 500 mV (RF) 3.95 V (RX) 2 5 IF_OUT L52 560nH 3.38 V (RX) 6 L22 100nH 3 R51 51 C25 1000pF 2.0 V (RX) C20 1000pF R23 22K 1% C99 0.1uF R22 6.8K L51 150nH 700 mV (RF) 3.9 V (RX) C51 82pF 485 mV (RF) 128 mV (RF) C2 36pF 1% L1 68nH 2% C4 15pF 1% C5 3.0pF 0.
PAGE 93
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-23 0 V (25 kHz) 5 V (12.5 kHz) 1 5 V (25 kHz) 0 V (12.5 kHz) 7 R65 39K U52-1 TC7W04F R66 20K FL53 CFWC455E C68 0.1uF 1 IN 3V (25kHz) 0V (12.5kHz) GND1 R61 100K 3 6 BW_SEL 8 2.8 V (25 kHz) 0 V (12.5 kHz) 1 V (25 kHz) 0 V (12.5 kHz) 3 5 VCC GND2 5V 5V OUT 2 GND 4 U52-4 PWR_GND 4 NC U52-3 TC7W04F 2 U52-2 TC7W04F R63 39K C69 0.1uF 0.33 V R64 20K 1 FL54 CFWC455G 2 3 1 IN 2.
PAGE 94
7-24 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 4.5V V_SF C231 1000pF R230 200K C233 4.7uF C232 0.
PAGE 95
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-25 V_SF 4.5V V_SF L270 560nH R273 300 3V C270 1200pF C274 0.1uF R270 18 C292 1200pF C285 0.1uF C272 0.1uF L282 47nH 4 5 6 16 C254 3.3pF 3.0% L253 100nH 15 C256 10pF 1.0% 20 R254 220 19 TX_IADJ RX_IADJ 50 U5 4 PRESC_OUT RX_BASE U251 RX_EMITTER TX_BASE FLIP_IN TRB_IN RX_SWITCH TX_SWITCH TX_EMITTER L292 68nH 18 COLL_RFIN C258 1200pF 3.0V to 9.
PAGE 96
7-26 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7.5 V USWB+ TX_ENA 0 V (RX) 3.3 V (TX) 3 R170 100K 7.5 V (RX) 0 V (TX) 2 Q170 1 1 TP0101T R171 22K 3 C170 1500pF Q171 2 DTC144EKA 0 V (RX) 6.78 V (TX) C157 0.1uF C154 1500pF C155 0.1uF R152 100K 1% R158 1.5K R153 100K 1% C151 1500pF C156 .01uF Q150 5.8 V (Hi) 4.15 V (Lo) (TYP, TX) 3 8 1 U151 57R01 C150 1500pF 6 7 5 8 TP150 R157 5.6K 2 4 2 3 4 C159 1500pF 2.6 V (Hi) 1.
PAGE 97
SW_B+ 5V 3V 5V 3V 7-27 SW_B+ VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND DEMOD DEMOD BW_SEL BW_SEL OPT_RX_AUD_SEND_DETECTOR OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN MOD_OUT MOD_OUT 16_8_MHZ 16_8_MHZ VS_AUDIO_SEL VS_GAIN_SEL NU NU NU NU D3_3V NU NU NU NU NU NU 15 16 17 18 19 20 21 22 23 24 25 26 27 28 BATT_CHARGE RESET SCI 14 ASFIC_CS 13 F1200
PAGE 98
7-28 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) D3_3V R416 20K 1 R410 10K R417 10K C418 0.1uF TP405 1 6 SCI R411 820 2 R419 4.7K 4 3 1 TP402 C419 1000pF Q410 D3_3V 1 D3_3V C412 1000pF LSIO C413 0.1uF 8 6 1 3 7 5 SCK VCC C411 0.1uF TP401 CH_ACT CS SO WP 2 SQ_DET HOLD SI VSS C410 10uF R412 100K 4 U402 X25128-2.7 EEPROM HSIO OPT_DATA_READY uP_CLK SPI_DATA_IN D3_3V SPI_DATA_OUT SPI_CLK R418 100K C414 0.
PAGE 99
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-29 150 mV RMS (25 kHz) (RX) 75 mV RMS (12.5 kHz) (RX) R516 NU C512 6.8pF C514 16pF R512 150K R514 100K 5V_A R511 100K 3 2 DEMOD 8 1 3 4 5V_A R513 NU 6 8 5 2 Q520 OPT_RX_AUD_SEND_DETECTOR U510-1 LM2904 R518 220K C518 0.1uF NU 4 C513 220pF C511 220pF 1 R515 7 C460 0.1uF U510-2 LM2904 OPT_RX_AUD_RETURN R470 2.2K VR471 R520 100K 2.
PAGE 100
7-30 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) USWB+ U310 TK71750S 7.5 V POS NEG DATA 5V 1 5 VIN VOUT 3 CTRL 4 BYPASS 5V GND F301 3A NC 2 C301 390pF J301 VR301 C303 10uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 R312 20K R313 20K MMBZ5250B 20V RX_ENA R310 100K 0 V (RX) 5 V (TX) C315 1200pF 3.
PAGE 101
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-31 D301 7 J470 L471 D470 R481 C482 4 U480 5 VR475 1 8 E452 3 R61 R482 VR473 C301 VR302 C489 1 C 8 VR110 S440 C C306 2 J301 Q280 L281 2 4 2 C305 2 C91 C92 5 U110 C112 C113 3 C6 C4 C5 L4 L1 4 C1 J140 S442 L3 L2 CR1 M140 C2 R26 C117 C3 C7 C8 L21 C9 S443 R22 C22 SH1 C33 C32 C233 C230 R205 R221 R220 C219 L31 C24 C36 C31 Q21 R25 C29 C23 R24 C25 L22 C30 L32 C34 C35
PAGE 102
7-32 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) R23 Q22 C141 C134 L131 C133 C124 SH100 TP150 L110 C111 C110 C106 R106 R111 L100 C107 C102 D440 3 Q100 C105 C492 R492 R491 R508 Q493 C481 R509 VR474 R484 R486 R485 C484 Q482 R498 Q481 R496 R487 C495 D492 8 J491 2 D491 3 4Q490 1 U490 R493 R495 R494 4 R499 R497 C498 R490 C499 2 4 L103 R105 L101 R477 R474 R476 C474 C483 C314 R311 R310 C316 C137 C136 C118 L121 C158 R16
PAGE 103
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) VHF (146-174 MHz) Radio Parts List (8486342Z09-A) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C20 C22 C23 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C40 C41 C42 C43 C44 C51 C52 C53 C55 C56 C57 C58 C59 C60 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C80 Motorola Part No.
PAGE 104
7-34 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) Circuit Ref C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 C477 C481 C482 C483 C484 C488 C489 C492 C493 C494 C495 C496 C497 C498 C499 Motorola Part No.
PAGE 105
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) Circuit Ref R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R122 R150 R151 R152 R153 R154 R155 R156 R157 R158 R162 R170 R171 R202 R205 R206 R212 R220 R221 R223 R227 R230 R243 R244 R245 R246 R247 R248 R253 R254 R255 R261 R262 R263 R264 R270 R271 Motorola Part No.
PAGE 106
7-36 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) Circuit Ref U490 U510 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201* Y202 Motorola Part No. Description 5108858K99 audio power amplifier, TDA8541 5113818A01 dual opamp, LM2904 not used 4813830A33 zener diode, 20V, MMBZ5250B 4813830A33 zener diode, 20V, MMBZ5250B 4813830A18 zener diode, 6.8V, MMBZ5235B 4813830A09 zener diode, 3.
PAGE 107
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-37 Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) USWB+ 5V 5T 5R 3V 5T 5R USWB+ 5V 5T 3V 5R 5T 5V USWB+ USWB+ TX_ENA TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RX_BE IF_IN IF_OUT RX_FE_VHF_R2 RSSI RX_OUT RX_INJ RSSI RX_IN TX_VHF_R2 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_VHF_R2 V_SF V_STEER V_SF
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7-38 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 5.0V (Rx) 0V (Tx) 5R FE_5R R20 6.8K 1% Q22 UMT1 1 C26 1000pF R21 100 3.95V (Rx) 4 500mV (RF) 2 5 3.95V (Rx) IF_OUT L52 680nH 6 3 2.0V (Rx) C20 1000pF R23 22K 1% R22 6.8K R51 51 C25 1000pF L22 100nH 3.38V (Rx) C99 0.1uF C29 10pF 1.0% C31 30pF 1% L31 68nH 2% C33 24pF 1% L32 68nH 2% C35 27pF 1% L33 68nH 2% 485mV (RF) 128 mV (RF) C2 36pF 1% L1 68nH 2% C4 15pF 1% C5 3.0pF 3.
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VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-39 5 V (12.5 KHz) 0 V (25KHz) 1 0 V (12.5 KHz) 5V (25KHz) 7 R65 39K U52-1 TC7W04F R66 20K FL53 CFWC455E C68 0.1uF 1 IN 5V OUT 2 0 V (12.5 KHz) 5V 0 V (12.5 KHz) 1V (25KHz) GND2 GND1 3 6 5V for 25kHz 0V for 12.5kHz 3 5 VCC R61 100K BW_SEL 8 2.8V (25KHz) GND 4 4 U52-4 PWR_GND NC U52-3 TC7W04F 2 IF_BAND_SEL U52-2 TC7W04F R63 39K C69 0.1uF 0.33 V R64 20K 1 FL54 CFWC455G 2 1 IN 3 2.
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7-40 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) V_SF FN_V_SF C231 1000pF R230 200K 4.5V C233 4.7uF C232 0.
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VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-41 V_SF V_SF 4.5V L270 560nH VCO_VSF R273 300 3V C270 1200pF R270 18 C274 0.1uF VCO_3V C292 1200pF C285 0.1uF C272 0.1uF L282 47nH 16 C254 3.3pF 3.0% L253 100nH 15 C256 10pF 1.
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7-42 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7.5 V 0.15 V (Tx) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) 3 R171 1 TX_ENA PA_TX_ENA 6.8K 0.15 V (Tx) Q171 MMBT3904 1.8V (Tx) 5 4 6 Q170 EMB10 2 R524 10K 2 3 1 0 V (Rx) 7.25 V (Tx) C172 1500pF 0 V (Rx) C157 0.1uF 7.3 V (Tx) C154 1500pF C155 0.1uF R152 100K 1% R158 1.5K R153 100K 1% C151 1500pF C156 .01uF Q150 2.5 V (Low) 3 8 U151 57R01 C150 1500pF 6 7 1 5 3.
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SW_B+ 5V 3V 5V 3V 7-43 SW_B+ VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD DEMOD OPT_RX_AUD_SEND_DETECTOR CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN BW_SEL BW_SEL CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL D3_3V SW_B+ 18 17 16 15 14 13 12 11 10 9 8 7 6 5 C500 1000pF BATT_CHARGE
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7-44 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) D3_3V R416 20K 1 R410 10K R417 10K C418 0.1uF TP405 1 6 SCI R411 820 2 D3_3V 3 1 TP402 R419 4.7K 4 C419 1000pF D3_3V Q410 R412 100K C412 1000pF C413 0.1uF 1 TP401 8 6 1 3 7 5 SCK VCC C411 0.1uF CS WP SO 2 LSIO HOLD SI 4 U402 X25128-2.7 VSS C410 10uF CH_ACT EEPROM SQ_DET HSIO SPI_DATA_IN OPT_DATA_READY SPI_DATA_OUT uP_CLK SPI_CLK D3_3V C400 NU R400 NU DISPL_COM_DATA_SEL R418 100K C414 0.
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VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-45 150 mV RMS (25 kHz) (Rx) 75 mv RMS (12.5 kHz) (Rx) R523 10K R516 NU C512 6.8pF R522 100K C514 16pF R512 150K 4 2 R514 100K 3 Q520-2 IMX1 5V_A 1 R511 100K 5 2 DEMOD 6 8 1 R513 6 8 3 R515 7 4 5V_A 5 OPT_RX_AUD_SEND_DETECTOR 4 U510-1 LM2904 C511 220pF VHF UHF R513 Not Placed 100k R515 Not Placed 0 R516 Not Placed Not Placed R517 0 R518 220K C513 220pF Q520-1 IMX1 C518 0.1uF C460 0.
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7-46 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) USWB+ U310 TK71750S 7.5 V F301 3A 5V 5V GND POS NEG DATA 1 5 VIN VOUT 3 CTRL 4 BYPASS NC 2 C301 390pF J301 VR301 C303 33uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 MMBZ5250B 20V R313 5.1K R312 20K R310 100K 5 V (Rx) 0 V (Tx) 0 V (Rx) 5 V (Tx) C315 1200pF RX_ENA 3.
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VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-47 J470 8 R281 2 C92 C506 C S440 C C112 C91 5 U110 C113 R24 L1 C117 C2 C9 L3 4 C1 J140 CR1 M140 C3 R26 L2 L21 C5 C24 C8 C7 C4 C22 L31 R25 C33 C32 C233 C230 L33 L4 C36 C31 3 C6 R22 Q21 C23 C29 L22 C30 C35 L32 C34 C25 SH1 C241 C216 25 C205 L281 R212 R248 U201 SH201 C218 4 2 1 C217 C231 C214 C202 R205 R221 R220 R417 C219 C419 C412 C413 R223 R419 R410 C410 8
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7-48 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) R23 2 R111 C110 4 D440 L103 3 Q100 C108 C101 R155 R153 C104 R475 C105 R499 C479 C498 Q493 Q481 R509 C481 VR474 R485 Q482 R498 4 3 R495 R484 C484 R508 Q490 R494 2 R487 3 4 8 C483 R491 R486 R493 5 U511 R490 1 U490 D491 R492 C492 R474 4 R497 R488 R477 Q470 C472 R476 C474 C490 R478 Q313 C134 C136 TP150 C106 L101 1 R104 J491 C316 C141 C137 SH100 L110 R106 C153 C154
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VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) VHF (146-174 MHz) Radio Parts List (8486342Z13-C) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C20 C22 C23 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C40 C41 C42 C43 C44 C51 C52 C53 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 Motorola Part No.
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7-50 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) Circuit Ref C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 C477 C478 C479 Motorola Part No.
PAGE 121
VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) Circuit Ref R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 R158 R162 R171 R202 R205 R206 R212 R220 R221 R223 R227 R230 Motorola Part No.
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7-52 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) Circuit Ref U52 U110 U150 U151 U201* U251 U310 U320 U330 U401* U402* U403 U404* U451 U480 U490 U510 U511 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201* Y202 Motorola Part No. Description 5109522E10 TC7W04F 0186438Z01 RA07M1317M_VHF 5113818A01 LM2904 2484657R01 57R01 5185963A27 63A27 5105750U54 50U54 5102478J01 TK71750S 5185963A55 LP2986 5102479J01 TK71730S 5102226J56 MC68HC11FL0 5102463J64 X25128-2.
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VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-53 Chapter 7 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ 5V 5T 5R 3V 5T 5R USWB+ 5V 5T 3V 5R 5T 5V USWB+ USWB+ TX_ENA TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RSSI RX_BE IF_IN IF_OUT RX_FE_VHF_R2 RX_OUT RX_INJ RSSI RX_IN TX_VHF_R2 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_VHF_R2 V_SF V_STEER V_SF VCO_
PAGE 124
7-54 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 5.0V (Rx) 0V (Tx) 5R FE_5R R20 6.8K 1% Q22 UMT1 1 C26 1000pF R21 100 3.95V (Rx) 4 500mV (RF) 2 5 3.95V (Rx) IF_OUT L52 680nH 6 3 2.0V (Rx) C20 1000pF R23 22K 1% R22 6.8K R51 51 C25 1000pF L22 100nH 3.38V (Rx) C99 0.1uF C29 10pF 1.0% C31 30pF 1% L31 68nH 2% C33 24pF 1% L32 68nH 2% C35 27pF 1% L33 68nH 2% 485mV (RF) 128 mV (RF) C2 36pF 1% L1 68nH 2% C4 15pF 1% C5 3.0pF 3.
PAGE 125
VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-55 5 V (12.5 KHz) 0 V (25KHz) 1 0 V (12.5 KHz) 5V (25KHz) 7 R65 39K U52-1 TC7W04F R66 20K FL53 CFWC455E C68 0.1uF 1 IN 5V OUT 2 0 V (12.5 KHz) 5V 0 V (12.5 KHz) 1V (25KHz) GND2 GND1 3 6 5V for 25kHz 0V for 12.5kHz 3 5 VCC R61 100K BW_SEL 8 2.8V (25KHz) GND 4 4 U52-4 PWR_GND NC U52-3 TC7W04F 2 IF_BAND_SEL U52-2 TC7W04F R63 39K C69 0.1uF 0.33 V R64 20K 1 FL54 CFWC455G 2 1 IN 3 2.
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7-56 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) V_SF FN_V_SF C231 1000pF R230 200K 4.5V C233 4.7uF C232 0.
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VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-57 V_SF V_SF 4.5V L270 560nH VCO_VSF R273 300 3V C270 1200pF R270 18 C274 0.1uF VCO_3V C292 1200pF C285 0.1uF C272 0.1uF L282 47nH 16 C254 3.3pF 3.0% L253 100nH 15 C256 10pF 1.
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7-58 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) 3 R171 1 TX_ENA PA_TX_ENA 6.8K 0.15 V (Tx) Q171 MMBT3904 1.8V (Tx) 5 4 6 Q170 EMB10 2 R524 10K 2 3 1 0 V (Rx) 7.25 V (Tx) C172 1500pF 0 V (Rx) C157 0.1uF 7.3 V (Tx) C154 1500pF C155 0.1uF R152 100K 1% R158 1.5K R153 100K 1% C151 1500pF C156 .01uF Q150 2.5 V (Low) 3 U151 57R01 C150 1500pF 6 8 1 7 5 3.0 V (Hi) 8 TP150 R157 5.
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SW_B+ 5V 3V 5V 3V 7-59 SW_B+ VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET OPT_RX_AUD_SEND_DETECTOR DEMOD DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN BW_SEL BW_SEL CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL D3_3V SW_B+ 18 17 16 15 14 13 12 11 10 9 8 7 6 5 C500 1000pF BATT_CHARGE RE
PAGE 130
7-60 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) D3_3V R416 20K 1 R410 10K R417 10K C418 0.1uF TP405 1 6 SCI R411 820 2 D3_3V 3 1 TP402 R419 4.7K 4 C419 1000pF D3_3V Q410 R412 100K C412 1000pF C413 0.1uF 1 TP401 8 6 1 3 7 5 SCK VCC C411 0.1uF CS WP SO 2 LSIO HOLD SI 4 U402 X25128-2.7 VSS C410 10uF CH_ACT EEPROM SQ_DET HSIO SPI_DATA_IN OPT_DATA_READY SPI_DATA_OUT uP_CLK SPI_CLK D3_3V C400 NU R400 NU DISPL_COM_DATA_SEL R418 100K C414 0.
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VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-61 150 mV RMS (25 kHz) (Rx) 75 mv RMS (12.5 kHz) (Rx) R523 10K R516 NU C512 6.8pF R522 100K C514 16pF R512 150K 4 2 R514 100K 3 Q520-2 IMX1 5V_A 1 R511 100K 5 2 DEMOD 6 8 1 R513 6 8 R515 7 3 4 5V_A 5 OPT_RX_AUD_SEND_DETECTOR 4 U510-1 LM2904 C511 220pF VHF UHF R513 Not Placed 100k R515 Not Placed 0 R516 Not Placed Not Placed R517 0 Not Placed R518 220K C513 220pF Q520-1 IMX1 C518 0.
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7-62 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ U310 TK71750S 7.5 V F301 3A 5V 5V GND POS NEG DATA 1 5 VIN VOUT 3 CTRL 4 BYPASS NC 2 C301 390pF J301 VR301 C303 33uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 MMBZ5250B 20V R313 5.1K R312 20K R310 100K 5 V (Rx) 0 V (Tx) 0 V (Rx) 5 V (Tx) C315 1200pF RX_ENA 3.
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VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-63 D301 R469 2 4 U480 R489 VR475 5 8 E452 4 2 1 C S440 C C306 2 J301 SH253 Q280 L283 2 1 R482 VR473 VR302 L471 Q171 R481 C482 3 R524 3 C286 C282 R280 R61 8 D470 C301 R171 R63 C69 U52 R483 VR301 C473 VR110 8 L281 C112 2 C91 C92 5 U110 C113 L1 C2 C3 C5 L3 4 J140 CR1 M140 C117 R26 C8 L2 L21 C4 C7 L31 C9 C24 R25 C33 C32 C233 C230 L33 C22 C31 3 C6 L4 Q21 R22 C29
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7-64 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) C134 L131 C133 TP150 SH100 L110 R111 C107 C108 C101 C105 C496 C479 D491 R509 C481 R484 Q482 R498 Q493 Q481 VR474 C314 R311 R485 Q312 C484 4 3 2 R487 R508 R495 R499 R497 C495 R494 8 Q490 R493 5 U511 3 4 1 U490 C499 R490 C483 R492 R491 R486 C492 4 R488 C498 C490 C474 R477 3 Q100 D440 C102 2 4 L103 C106 R105 R106 L101 L100 C171 R103 R104 C141 C137 C136 L121 C110 J491
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VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) VHF (146-174 MHz) Radio Parts List (8486769Z04-C) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C20 C22 C23 C24 C25 C26 C29 C30 C31 C32 C33 C34 C35 C36 C40 C41 C42 C43 C44 C51 C52 C53 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 Motorola Part No.
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7-66 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C425 C426 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 Motorola Part No.
PAGE 137
VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 R158 R162 R171 R202 R205 R206 R212 Motorola Part No.
PAGE 138
7-68 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Ref T41 T42 U51 U52 U110 U150 U151 U201 U251 U310 U320 U330 U401 U402 U403 U404 U425 U451 U480 U490 U510 U511 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201 Y202 Motorola Part No.
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Chapter 7 VHF Schematic Diagrams, Overlays, and Parts Lists 7.1 Introduction This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections. 7.1.1 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1.
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7-2 VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction Ref. No. Series Circuit Block 301-400 DC Regulation 401-450 Microprocessor 451-550 Audio 7. Circuit Block Interconnection Legend: Name June 6, 2005 Description USWB+ Unswitched Battery Voltage (always on) 5V 5 volts (regulated) 5R 5 volts in RX mode only 5T 5 volts in TX mode only RESET Low-line reset signal from U320 to uP D3_3V Digital 3.
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VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 7.1.2 7-3 Six Layer Circuit Board SIDE 1 LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4) LAYER 5 (L5) LAYER 6 (L6) INNER LAYERS SIDE 2 Figure 7-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence 7.2 Speaker and Microphone Schematic MK1 1 MATES WITH J470 ON RADIO BOARD 2 SP1 1 MATES WITH J491 ON RADIO BOARD 2 Figure 7-2. Speaker and Microphone Schematic 7.2.
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7-4 VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic This Page Intentionally Left Blank June, 2005 6880309N62-C
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Chapter 8 403-440 MHz UHF Theory Of Operation 8.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. 8.2 UHF Receiver The UHF receiver covers the range of 403-440 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major blocks, as shown in Figure 8-1.
PAGE 144
8-2 403-440 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and insertion loss of 3.5 dB. This filter yields an image rejection of 58 dB at 350 MHz, assisted by a transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
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403-440 MHz UHF Theory Of Operation: UHF Transmitter 8.3 8-3 UHF Transmitter The UHF transmitter covers the range of 403-440 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in Figure 8-2. • • • • Power Amplifier Harmonic Filter Antenna Matching Network Power Control.
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8-4 8.3.4 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. 8.3.
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403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 8-5 SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Voltage Multiplier TRB VCP Vmult1 Rx VCO Circuit Aux3 Synthesizer U201 Vmult2 16.8 MHz Ref. Osc. Buffer Q280 Rx Out VCOBIC U251 Loop Filter MOD Out Modulating Signal To Mixer Tx Out To PA Driver Tx VCO Circuit Figure 8-3.
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8-6 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit.
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403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 8-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO.
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8-8 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C
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Chapter 9 438-470 MHz UHF Theory Of Operation 9.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. 9.2 UHF Receiver The UHF receiver covers the range of 438-470 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major blocks, as shown in Figure 9-1.
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9-2 438-470 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and insertion loss of 3 dB. This filter yields an image rejection of 48 dB at 380 MHz, assisted by a transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
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438-470 MHz UHF Theory Of Operation: UHF Transmitter 9.3 9-3 UHF Transmitter The UHF transmitter covers the range of 438-470 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in Figure 9-2. • • • • Power Amplifier Harmonic Filter Antenna Matching Network Power Control.
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9-4 9.3.4 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. 9.3.
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438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 9-5 SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Voltage Multiplier TRB VCP Vmult1 Rx VCO Circuit Aux3 Synthesizer U201 Vmult2 16.8 MHz Ref. Osc. Buffer Q280 Rx Out VCOBIC U251 Loop Filter MOD Out Modulating Signal To Mixer Tx Out To PA Driver Tx VCO Circuit Figure 9-3.
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9-6 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit.
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438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 9-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO.
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9-8 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C
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Chapter 10 465-495 MHz UHF Theory Of Operation 10.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. 10.2 UHF Receiver The UHF receiver covers the range of 465-495 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems. The receiver is divided into two major blocks, as shown in Figure 10-1.
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10-2 465-495 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 480 MHz, and insertion loss of 3.3 dB. This filter yields an image rejection of 55 dB at 405.3 MHz, assisted by a transmission-zero at 300 MHz implemented by C524 for the reasons mentioned above.
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465-495 MHz UHF Theory Of Operation: UHF Transmitter 10-3 10.3 UHF Transmitter The UHF transmitter covers the range of 465-495 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts. The transmitter is divided into four major blocks as shown in Figure 10-2. • • • • Power Amplifier Harmonic Filter Antenna Matching Network Power Control.
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10-4 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10.3.4 Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency. 10.3.
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465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-5 SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Voltage Multiplier TRB VCP Vmult1 Rx VCO Circuit Aux3 Synthesizer U201 Vmult2 16.8 MHz Ref. Osc. Buffer Q280 Rx Out VCOBIC U251 Loop Filter MOD Out Modulating Signal To Mixer Tx Out To PA Driver Tx VCO Circuit Figure 10-3.
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10-6 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit.
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465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO.
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10-8 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C
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Chapter 11 UHF Troubleshooting Tables 11.1 Troubleshooting Table for Receiver Table 11-1. Troubleshooting Table for Receiver Symptom Radio Dead (no turn-on beep, no LED indication) Possible Causes Procedure Corrective Action 1. Battery dead or defective. Substitute known good battery or battery eliminator. Charge or replace battery. 2. Defective batery contacts. Inspect battery contacts for corrosion or bent terminals. Clean/repair/replace J301. 3. Blown fuse Check voltage on each side of fuse.
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11-2 UHF Troubleshooting Tables: Troubleshooting Table for Receiver Table 11-1. Troubleshooting Table for Receiver (Continued) Symptom No Audio No Receive (squelch noise present) Possible Causes Corrective Action 1. Synthesizer out of lock Verify U201-4 is at 3V dc. Troubleshoot synthesizer/VCO circuits. 2. Defective IFIC Verify audio is present at U51-8. Check Q70, Y70, U51. 3. RX audio buffer fault Verify audio is present at U451-2. Check U510 and associated parts. 4.
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UHF Troubleshooting Tables: Troubleshooting Table for Synthesizer 11-3 11.2 Troubleshooting Table for Synthesizer Table 11-2. Troubleshooting Table for Synthesizer Symptom Synthesizer Out of Lock (RX mode only) Synthesizer Out of Lock (TX mode only) Synthesizer Out of Lock (RX and TX modes) Possible Causes 1. VCO fault Corrective Action Verify oscillator is working, check RF level at U251-10 per schematic. Check VCO tank components connected to U251-5 and 6.
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11-4 UHF Troubleshooting Tables: Troubleshooting Table for Transmitter 11.3 Troubleshooting Table for Transmitter Table 11-3. Troubleshooting Table for Transmitter Symptom No Transmit (no TX LED indication) No Transmit (TX LED indication OK) Low Power Possible Causes Corrective Action 1. PTT switch defective. Verify U401-71 goes low when PTT is pressed. 2. EXT MIC PTT fault Verify U401-72 goes low when J471- Check/replace Q470, L471 etc. 4 is grounded. Replace PTT switch S441. 1.
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UHF Troubleshooting Tables: Troubleshooting Table for Transmitter 11-5 Table 11-3. Troubleshooting Table for Transmitter (Continued) Symptom Poor TX range, conducted power OK No internal mic audio (EXT MIC audio OK) No EXT MIC audio Possible Causes Procedure 1. RF test jack defective Verify continuity of J140 pins 3 and 4 in RX mode only. Replace J140. 2. Antenna matching net- Visually inspect components C140work fault 141, L140 or L141. Check dc continuity of L140 or L141in RX mode only.
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11-6 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11.4 Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals IC Designator Pin U51 IFIC 1 RF input 44.85 MHz 1.20 2 RF input decoupling 1.20 3 2nd LO osc output 4.02 4 2nd LO osc input 4.60 5 RSSI output 0.74 6 Vcc 4.70 7 Audio feedback 0.89 8 Audio output 1.44 DEMOD to stage U510 9 RSSI feedback 0.
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UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-7 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U110 RF Power Amp 1 RF input 2 Vgg (gate bias) 3 Vdd 4 RF output 5 Ground 1 Unit 1 output 4.20 (typ) (TX mode) (5.8V typ at VHF) 2 Unit 1 (-) input 2.39 (typ) (TX mode) 3 Unit 1 (+) input 2.39 (typ) (TX mode) 4 Ground 5 Unit 2 (+) input 3.30 (typ) (TX mode) 6 Unit 2 (-) input 3.
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11-8 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U201 Freq Synthesizer 24 Ref osc XTAL2 25 Ref osc warp output 3.00 26 Superfilter cap 4.48 27 Superfilter base (NU) 3.76 28 Superfilter output 4.52 29 NC2 30 Superfilter input 31 NC3 32 Prescaler input 1.97 33 Prescaler ground GND 34 Prescaler Vdd 2.99 35 Prescaler Vref (NU) 1.97 36 Digital Vdd 2.
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UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-9 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U251 VCO / Buffer 12 Prescaler output 2.26 13 TX switch output (NU) 0.06 14 Vcc_BUFFERS 3.00 15 TX VCO emitter 0 (RX mode) 16 TX VCO base 0 (RX mode) 17 GND_LOGIC GND 18 Vcc_LOGIC 3.00 19 TRB input 0.03 20 FLIP input GND 1 Vin 7.48 2 Ground GND 3 Control input 7.48 4 Bypass capacitor 1.
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11-10 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 10 PB1_ADDR9 3.05 11 PB2_ADDR10 0.16 12 VDD 3.23 13 VSS GND 14 PBO_ADDR8 3.05 15 PB5_ADDR13 0.13 16 PG1_XA14 0.20 17 PG4_XA17 3.17 18 PG5_XA18 0 19 PG3_XA16 3.21 20 PG2_XA15 0.30 21 PB4_ADDR12 0.22 22 PF7_ADDR7 3.03 23 PF6_ADDR6 3.08 24 PF5_ADDR5 3.06 25 PF4_ADDR4 0.
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UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-11 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 46 PH1_PW2 3.00 47 PH0_PW1 3.23 48 XIRQ 3.00 49 PI7 1.48 RX enable 50 PI6 0.01 TX enable 51 PI5 3.23 52 PI4 0 Green LED enable 53 PI3 0 Red LED enable 54 PI2 0 55 PI1 0 56 PI0 2.98 Lock detect from U201-4 57 MODB_VSTBY 3.22 Boot mode enable 58 MODA_LIR 3.12 59 AVDD 3.
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11-12 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U401 Microprocessor 82 PA3_IC4_OC5_OC1 83 PA4_OC4_OC1 0 Squelch detect input 84 PA5_OC3_OC1 0 Channel activity input 85 PA6_OC2_OC1 0 86 PA7_PA1_OC1 0 87 VSSR GND 88 VDDR 3.23 89 ECLK (NU) 1.60 90 EXTAL 1.70 Clock from U451-28 91 XTAL 1.40 Not used 92 VDDSYN 0 93 XFC (NU) 0 94 RESET 3.
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UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-13 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U404 Flash ROM 10 A16 3.17 11 A15 0.30 12 A12 0.22 13 A7 3.03 14 A6 3.08 15 A5 3.06 16 A4 0 17 A3 0.24 18 A2 3.08 19 A1 3.05 20 A0 3.05 21 D0 0.69 22 D1 0.94 23 D2 1.08 24 GND GND 25 D3 0.78 26 D4 0.59 27 D5 0.66 28 D6 0.67 29 D7 0.75 30 EN_CE 3.01 31 A10 0.
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11-14 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U451 ASFIC_CMP 14 GCB1 general purpose output 0 15 GCB0 general purpose output 3.00 16 Squelch channel activity output 0 To U401-84 17 Squelch detect digital output 0 To U401-83 18 PL/low speed data I/O 1.50 19 High speed data I/O 3.00 20 Chip select 3.23 21 Serial clock input 0 22 Serial data input 3.
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UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-15 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin U480 Dual Opamp 1 Unit 1 output 2.48 2 Unit 1 (-) input 2.48 3 Unit 1 (+) input 2.46 4 Ground GND 5 Unit 2 (+) input 0.28 6 Unit 2 (-) input 0.29 7 Unit 2 output 8 Vcc 4.96 1 Enable/shutdown 0.12 (Unsquelched) 2 Bias reference 3.26 (Unsquelched) 3 (+) input 3.26 (Unsquelched) 4 (-) input 3.
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11-16 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Notes: June, 2005 6880309N62-C
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Chapter 12 UHF Schematic Diagrams, Overlays, and Parts Lists 12.1 Introduction This section provides schematic diagrams, overlays, and parts lists for the radio circuit boards and interface connections. 12.1.1 Notes For All Schematics and Circuit Boards * Component is frequency sensitive. Refer to the Electrical Parts List for value and usage. 1.
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12-2 UHF Schematic Diagrams, Overlays, and Parts Lists: Introduction Ref. No. Series Circuit Block 301-400 DC Regulation 401-450 Microprocessor 451-550 Audio 7. Circuit Block Interconnection Legend: Name June, 2005 Description USWB+ Unswitched Battery Voltage (always on) 5V 5 volts (regulated) 5R 5 volts in RX mode only 5T 5 volts in TX mode only RESET Low-line reset signal from U320 to uP D3_3V Digital 3.
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UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 12-3 12.1.2 Six Layer Circuit Board SIDE 1 LAYER 1 (L1) LAYER 2 (L2) LAYER 3 (L3) LAYER 4 (L4) LAYER 5 (L5) LAYER 6 (L6) INNER LAYERS SIDE 2 Figure 12-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence 12.2 Speaker and Microphone Schematic MK1 1 MATES WITH J470 ON RADIO BOARD 2 SP1 1 MATES WITH J491 ON RADIO BOARD 2 Figure 12-2. Speaker and Microphone Schematic 12.2.
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12-4 UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic This Page Intentionally Left Blank June, 2005 6880309N62-C
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-5 Chapter 12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 USWB + 5V 5T 5R 3V USWB+ 5T 5R 3V 5V 5R 5V 5R USWB + USWB+ 5V 5T TX_EN A 5T TX_ENA PWR_SET TX_UHF_R1 PWR_SET CONTROLLER DEMOD DEMOD BW_SEL BW_SEL RX_BE RX_FE_UHF_R1 IF_IN IF_OUT RX_IN TX_INJ RSSI RSSI RX_OUT RX_INJ 5V 5V MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V 3V PRESC SYNTH_UHF_R1 SYNTH_
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12-6 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 5R FE_5R Q22 C26 R21 75 R20 5.6K 390pF UMT1 UHF R1 Front End 4 1 2 SH1 SHIELD 5 C20 C25 6 390pF 3 R22 5.6K C523 0.55pF C2 C3 1.8pF C5 5.6% 0 C6 1.8pF C8 RX_IN C1 18pF 1% L1 9.85nH 2% 15pF 1% C4 5.6% L2 9.85nH 2% C12 10pF 1.0% NU 0 C7 L3 9.85nH 2% NU C28 C27 9.1pF 1.1% 15pF 1% L31 9.85nH 2% C32 7.5pF 1.3% C31 9.1pF 1.1% C30 22pF 1% C46 C23 R24 390pF 1.2K NU L32 9.
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-7 RX Back End (Overtone) 7 1 C68 U52-1 TC7W04F FL53 CFWC455E R65 39K 0.1uF 1 IN R66 20K OUT 2 0V for 12.5kHz C69 R63 39K D51 0.1uF 2 1 IN 1 SH50 SHIELD 8 U52-4 PWR_GND 3 5 SH52 SHIELD 1 GND 3 2 C74 R62 3.3K NC VCC 1 OUT 2 R67 20K GND1 U52-3 TC7W04F D52 R64 20K FL54 CFWC455G 3 5V 4 2 6 R60 2.4K 1 3 4 1 IN 4 C63 C62 FL52 FLTR 9180468V04 0.1uF 0.
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12-8 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 Synthesizer FN_V_SF 4.5V R247 22K C231 C232 C233 1000pF 0.1uF 4.7uF SH200 SHIELD LOCK: 3V UNLOCK: 0V NC NC NC 31 NC3 29 NC2 17 NC1 NC NC 42 18 NC 32 PREI N 27 SFBASE 26 SFCAP PRESC 100pF C240 1.3pF 39 40 C230 2.2uF NC NC 21 35 30 7 10 FN_DATA SPI_DATA_OUT CCOMP REFSEL FN_SYNTH_CS FN_CLK 1 1 LOCK C204 25 16 28 46 4 45 43 470pF NC NC NC NC TX: 3V FN_TRB C243 R245 3.2V to 4.
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-9 UHF R1 VCO V_SF VCO_VSF V_SF R273 L270 4.5V 220nH C270 390pF SH250 SHIELD SH251 SHIELD L272 220nH SH253 SHIELD 0 330 C274 VCO_3V R277 0.1uF 3V C273 1 C271 R274 33 390pF 27nH D251 C254 7.5pF 1.3% VCO_V_STEER L251 V_STEER 220nH 3.2V to 9.5V C251 150pF 0888600M03 1.8% L254 12.5nH 2% C256 3.6pF 2.
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12-10 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 Tx PA_USWB+ USWB+ Q171 PA_TX_ENA TX_ENA C170 4 390pF 6 5 Q170 EMB10 2 3 1 C525 390pF C157 C154 0.1uF 390pF R120 150 R152 R158 R159 C151 5.1K 0 390pF U150-2 C156 Q150 LM2904 3 8 6 .01uF R157 2 1 2.
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-11 5V +3 V 3V SW_B + SW_B 5V Controller VS_AUDIO_SEL CNTL_PWR_SET OPT_MI C PWR_SET OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN SW_B + 25 OPT_RX_AUD_SEND_UNMUTED 24 23 OPT_RX_AUD_RETURN 22 21 VS_GAIN_SEL 10 9 C500 8 7 1000pF 6 5 4 C503 1000pF BATT_CHARGE RESET SC I uP_CL K ASFIC_CS F1200 BOOT_ENA EXT_MIC_PTT 16_8_MHZ C501 CNTL_SPI_CLK 1uF SPI_CLK CNTL_SPI_DATA_OUT SPI_DATA_OUT R502 100 3
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12-12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Microprocessor D3_3 V D3_3V R416 20K R410 10K D3_3V C410 C411 C412 10uF 0.1uF 1000pF C413 R412 100K 0.1uF 8 6 1 3 7 5 TP405 VCC SCK CS 2 WP SO HOLD SI VSS 4 TP402 C418 R417 10K 0.1uF Q410 1 1 R411 6 1 SC I 820 SH401 SHIELD SH400 SHIELD C419 2 1000pF 3 U402 1 R419 4.7K 4 1 X25128-2.
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-13 R516 R523 NU C512 10K C514 6.8pF R522 16pF 100K R514 R512 150K LM2904 R511 2 100K 3 DEMOD Q520 8 1 R513 R515 7 1 5 6 C460 0.1uF VR471 C511 C513 R518 220K 220pF 220pF R519 100K C519 4 R470 OPT_RX_AUD_SEND_DETECTO R 5 4 5V_A 8 IMX1 IMX1 C518 6 3 Audio Q520 5V_A 100K U510-1 4 2 U510-2 0.1uF 2.
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12-14 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) DC Regulation USWB+ POS NEG DATA U310 TK71750S VR301 MMBZ5250B F301 J301 3A C301 D301 NC 47pF 20V C303 C304 33uF .01uF 1 VIN 5 VOUT 3 4 CTRL BYPASS GND 2 C310 .01uF 5V C311 C312 C313 .018uF 10uF .01uF Q311 5R D3_3V BATT_CHARGE C314 VR302 MMBZ5250B C302 C305 C306 390pF 100pF .
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-15 D301 C478 4 J470 R469 C476 C473 L471 D470 C489 R481 C482 4 1 U480 VR475 5 8 R482 VR473 R489 C301 R63 VR302 2 3 R483 VR301 R496 4 3 R61 E452 1 C 8 VR110 S440 C C306 2 J301 2 4 2 C305 L281 2 C92 C91 C217 C7 C113 3 C3 C117 C1 J140 4 L1 M140 C2 C523 C10 CR1 S442 C9 L21 C116 C4 C5 C6 Q21 R25 C23 R22 C21 C11 U110 L2 L3 SH1 S443 L55 C46 C25 C522 R24 C47 C3
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12-16 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) C141 C134 L131 TP150 SH100 C171 R111 L110 D440 3 C105 4 R104 2 3 C101 R488 D491 R498 4 3 Q493 Q481 C481 VR474 R509 R486 R485 Q482 R508 Q490 R495 R494 2 R487 R484 C484 3 4 C483 R491 8 R499 R497 U511 R490 R493 5 R492 C492 R474 1 U490 C490 C498 4 2 4 L103 L101 R105 C106 R106 R475 R311 C314 R310 TP404 C316 C136 C123 R162 1 3 4 Q311 C137 C124 D120 4 U150 C104 C4
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF (403-440 MHz) Radio Parts List (8486635Z03-O) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C20 C21 C23 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C41 C42 C43 C44 C45 C46 C47 C48 C49 C51 C52 C53 C55 C56 C57 C58 C59 C60 Motorola Part No.
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12-18 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Circuit Ref C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 Motorola Part No.
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UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Circuit Ref R51 R52 R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 R158 R159 R162 R202 R205 Motorola Part No.
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12-20 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Circuit Ref U201* U251 U310 U320 U330 U401* U402* U403 U404* U451 U480 U490 U510 U511 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201* Y202 Motorola Part No. Description 5185963A27 63A27 5105750U54 50U54 5102478J01 TK71750S 5185963A55 LP2986 5102479J01 TK71730S 5102226J56 MC68HC11FL0 5102463J64 X25128-2.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-21 Chapter 12 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) USWB+ 5V 5T 5R 3V 5T 3V 5R TX_ENA 5T 5V USWB+ 5R 5T 5V USWB+ USWB+ TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RSSI RX_BE IF_IN IF_OUT RX_FE_UHF_R2 RX_OUT RX_INJ RSSI RX_IN TX_UHF_R2 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_UHF_R2 V_SF V_STEER V_SF
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12-22 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 5 V (RX) 0 V (TX) 5R FE_5R R21 100 R20 5.6K C26 390pF 4.2 V (RX) Q22 UMT1 1 4 3.66 V (RX) 4.2 V (RX) 2 5 C20 390pF 6 3 C25 390pF L55 18nH 1.93 V (RX) C99 0.1uF R23 27K C523 0.2pF -7.5 dBm 18 mV (RF) C2 15pF 1% C3 1.5pF 6.7% R22 5.6K C6 1.5pF 6.7% C5 0 C9 15pF 1% C8 0 C23 390pF C11 15pF C21 390pF 1 3 L1 9.85nH 2% C4 NU C12 8.2pF 1.2% L2 9.85nH 2% L3 9.85nH 2% C7 NU 1 C521 5.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-23 0 V (25 kHz) 5 V (12.5 kHz) 1 5 V (25 kHz) 0 V (12.5 kHz) 7 R65 39K U52-1 TC7W04F R66 20K FL53 CFWC455E C68 0.1uF 1 IN 5V OUT 2 5V 3V (25kHz) 0V (12.5kHz) 3 6 3 5 VCC GND2 GND1 R61 100K BW_SEL 8 2.8 V (25 kHz) 0 V (12.5 kHz) 1 V (25 kHz) 0 V (12.5 kHz) GND 4 U52-4 PWR_GND 4 NC U52-3 TC7W04F 2 U52-2 TC7W04F R63 39K C69 0.1uF 0.33 V R64 20K 1 FL54 CFWC455G 2 1 IN 3 2.
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12-24 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 4.5V V_SF R230 100K R247 91K C231 1000pF C232 0.1uF C233 4.7uF LOCK: 3V UNLOCK: 0V 17 NC3 NC2 33 44 22 NC1 PD_GND 29 PRE_GND NC 31 AGND NC NC DGND 6 LOCK WARP INDMULT SFOUT ADAPTSW NC C241 100pF NC 42 18 CCOMP LOCK REFSEL IADAPT IOUT 32 PRESC NC 27 26 39 C240 1.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-25 V_SF R273 330 4.5V V_SF R277 0 L270 220nH C292 390pF C270 390pF C274 0.1uF 3V C285 0.1uF L272 220nH C272 0.1uF 5 6 L252 27nH 16 15 D251 C254 5.1pF 2% L254 12.5nH 2% 20 C256 3.9pF 2.5% 19 V_STEER C257 12pF 1% L251 220nH 18 COLL_RFIN 50U 54 PRESC_OUT RX_BASE U251 RX_EMITTER TX_EMITTER FLIP_IN TRB_IN RX_SWITCH TX_SWITCH TX_BASE +11.7 dBm 276 mV RF (TX) 10 12 -6.7 dBm 66.
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12-26 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 7.5V USWB+ R170 100K 2 7.5 V (RX) 0 V (TX) 0 V (RX) 3.3 V (TX) 1 TX_ENA Q170 R171 22K 0 V (RX) 6.8 V (TX) 3 C170 390pF Q171 C157 0.1uF C154 390pF R159 0 R158 C156 5.1K .01uF Q150 3 8 1 4.4 V (Hi) 3.6 V (Lo) (TYP, TX) R157 2.2K 8 TP150 R152 100K R153 1% 100K 1% C151 390pF 5 4 2 U150-2 LM2904 3 C152 390pF 4 U150-1 LM2904 2.6 V (Hi) 1.8 V (Lo) (TYP, TX) R150 0.1 C153 0.
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SW_B+ 5V 3V 5V 3V 12-27 SW_B+ UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND DEMOD DEMOD BW_SEL BW_SEL OPT_RX_AUD_SEND_DETECTOR OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN MOD_OUT MOD_OUT 16_8_MHZ 16_8_MHZ VS_AUDIO_SEL VS_GAIN_SEL NU NU NU NU D3_3V NU NU NU NU NU NU 17 18 19 20 21 22 23 24 25 26 27 28 BATT_CHARGE 16 RESET 14 15 SCI 13 ASFIC_CS 12
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12-28 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) D3_3V R410 10K R416 20K 1 R417 10K C418 0.1uF TP405 1 6 SCI R411 820 2 R419 4.7K 4 3 1 TP402 C419 1000pF Q410 D3_3V 1 D3_3V R412 100K C412 1000pF LSIO C413 0.1uF 8 6 1 3 7 5 SCK VCC C411 0.1uF CH_ACT CS SO WP 2 SQ_DET HOLD SI VSS C410 10uF TP401 4 U402 X25128-2.7 EEPROM HSIO OPT_DATA_READY uP_CLK SPI_DATA_IN D3_3V SPI_DATA_OUT SPI_CLK R418 100K C414 0.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-29 150 mV RMS (25 kHz) (RX) 75 mV RMS (12.5 kHz) (RX) R516 NU C512 6.8pF C514 16pF R512 150K R514 100K 5V_A R511 100K 3 2 DEMOD 8 1 3 4 5V_A R513 100k 6 8 5 2 Q520 OPT_RX_AUD_SEND_DETECTOR U510-1 LM2904 R518 220K C518 0.1uF 0 4 C513 220pF C511 220pF 1 R515 7 C460 0.1uF U510-2 LM2904 OPT_RX_AUD_RETURN R470 2.2K VR471 R520 100K 2.
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12-30 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) USWB+ U310 TK71750S 7.5 V POS NEG DATA 5V 1 5 VIN VOUT 3 CTRL 4 BYPASS 5V GND F301 3A NC 2 C301 390pF J301 VR301 C303 10uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 R313 20K MMBZ5250B 20V R312 20K RX_ENA R310 100K 0 V (RX) 5 V (TX) C315 1200pF 3.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-31 D301 7 C488 J470 R483 C489 R481 C482 4 U480 5 VR475 1 8 E452 3 R61 R482 VR473 VR302 2 3 L471 D470 C301 R171 R63 8 C 8 S442 4 L1 C1 J140 L21 C5 C3 C523 M140 C11 CR1 C10 R22 C23 R24 R25 3 C117 C2 C8 C21 C6 C9 Q21 SH1 C522 L55 C46 S443 C116 C12 C4 L2 L3 C29 C33 C25 S440 C C7 C30 C31 L32 C35 C48 C230 C233 C36 C47 C32 U110 C113 L31 C28 C521 C34 4 2 C306 C92 5
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12-32 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) R23 C20 C132 C141 D120 C133 L131 SH100 R162 TP150 L110 C106 C107 D440 3 R104 4 3 C492 R492 R491 R498 D491 D492 3 R508 C481 R509 Q481 R487 VR474 R486 R484 Q482 C495 R507 Q493 R496 C484 C314 R485 Q312 R312 J491 2 8 4Q490 1 U490 R493 R495 R494 4 R499 R497 C498 C483 R474 R490 C499 2 4 2 C108 L103 C105 L101 R105 R106 C101 R475 R477 R479 C316 C137 C130 4 R158 2 Q31
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) UHF (438-470 MHz) Radio Parts List (8486348Z09-A) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C20 C21 C23 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C41 C42 C43 C44 C45 C46 C47 C48 C49 C51 C52 C53 C55 C56 C57 C58 C59 C60 C62 C63 Motorola Part No.
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12-34 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) Circuit Ref C416 C417 C418 C419 C420 C421 C422 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C470 C471 C472 C473 C474 C475 C476 C477 C481 C482 C483 C484 C488 C489 C492 Motorola Part No.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) Circuit Ref R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 R158 R159 R162 R170 R171 R202 R205 R206 R212 R220 R221 R223 R227 R230 R243 R244 R245 R246 R247 Motorola Part No.
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12-36 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) Circuit Ref U401* U402* U403 U404* U451 U480 U490 U510 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201* Y202 Motorola Part No.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-37 Chapter 12 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) USWB+ 5V 5T 5R 3V 5T 3V 5R TX_ENA 5T 5V USWB+ 5R 5T 5V USWB+ USWB+ TX_ENA PWR_SET DEMOD DEMOD BW_SEL BW_SEL RSSI RX_BE IF_IN IF_OUT RX_FE_UHF_R2 RX_OUT RX_INJ RSSI RX_IN TX_UHF_R2 TX_INJ 5V 5R PWR_SET MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ 3V PRESC SPI_CLK SPI_CLK SYNTH_UHF_R2 V_SF V_STEER V_SF
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12-38 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 5 V (Rx) 0 V (Tx) 5R FE_5R R21 82 R20 5.6K C26 390pF 4.2 V (Rx) Q22 UMT1 1 4 3.66 V (Rx) 4.2 V (Rx) 2 5 C20 390pF 6 3 C25 390pF L55 22nH 4.2 V (Rx) C99 0.1uF R23 27K C523 0.45pF R22 5.6K 363 mV (RF) 4.2 V (Rx) R24 1.5K 6.7% C521 5.1pF -7.5 dBm 18 mV (RF) C3 6.2pF 1.6% C2 9.1pF 1.1% C6 8pF 1.25% C5 7.5pF 1.3% C9 8.2pF 1.2% C8 5.1pF 2% C23 390pF C11 15pF C21 390pF 0.79 V RX_IN -0.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-39 0 V for 25 kHz 5 V for 12.5 kHz 1 5 V (25 kHz) 0 V (12.5 kHz) 7 R65 39K U52-1 TC7W04F R66 20K FL53 CFWC455E C68 0.1uF 1 IN 2.8 V (25 kHz) 0 V (12.5 kHz) GND1 R61 100K 3 6 BW_SEL U52-2 TC7W04F GND 4 4 R63 39K 0.33 V R64 20K 2 1 IN 3 1 IN C63 17.5 mV (RF) 0.1uF 5V OUT 2 C61 68pF C64 0.1uF GND 3 C67 0.1uF C65 0.1uF 9180468V04 R72 390 C66 0.
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12-40 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) V_SF FN_V_SF R230 22K R247 47K C232 0.1uF C231 1000pF 4.5 V C233 4.7uF LOCK NC 29 17 NC3 NC2 44 33 22 NC1 PD_GND 31 PRE_GND NC AGND NC DGND 6 FN_LOCK WARP INDMULT SFOUT ADAPTSW NC C241 100pF NC 42 18 CCOMP LOCK REFSEL IADAPT IOUT 32 PRESC NC FN_PRESC 27 26 39 C240 1.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-41 V_SF V_SF L270 220nH VCO_VSF 4.5 V R273 330 C270 390pF C285 0.1uF VCO_3V C272 0.1uF L252 27nH 16 15 D251 L254 12.5nH 2% 20 C256 3.9pF 2.5% 19 V_STEER VCO_V_STEER 3.5 V to 10 V C257 12pF 1% L251 220nH 50 U5 4 PRESC_OUT RX_BASE U251 RX_EMITTER TX_BASE TX_SWITCH TX_EMITTER FLIP_IN TRB_IN RX_SWITCH TX_INJ 8 VCO_TX_INJ 12 -6.7 dBm 66.3 mV RF (Rx) 7 L291 6.
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12-42 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 7.5 V USWB+ 0 V (Rx) PA_USWB+ C170 3.3 V (Tx) 390pF TX_ENA 7.5 V (Rx) 0 V (Tx) PA_TX_ENA 4 5 6 Q170 EMB10 Q171 3 2 1 0 V (Rx) 6.8 V (Tx) C171 390pF C157 0.1uF C154 390pF C155 0.1uF C151 390pF R158 C156 1.5K .01uF Q150 3 8 4.4 V (Hi) 5 R157 2.2K 8 TP150 U151 57R01 C150 390pF 6 7 1 3.
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SW_B+ 5V 3V 5V 3V 12-43 SW_B+ UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD DEMOD OPT_RX_AUD_SEND_DETECTOR CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO OPT_RX_AUD_RETURN BW_SEL BW_SEL CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL D3_3V SW_B+ 14 13 12 11 10 9 8 7 6 5 C500 1000pF BATT_CHARGE RESET SCI AS
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12-44 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) D3_3V R416 20K 1 R410 10K R417 10K C418 0.1uF TP405 6 1 SCI R411 820 2 D3_3V 3 1 TP402 R419 4.7K 4 C419 1000pF D3_3V Q410 R412 100K C412 1000pF C413 0.1uF 1 TP401 8 6 1 3 7 5 SCK VCC C411 0.1uF CS WP SO 2 LSIO HOLD SI 4 U402 X25128-2.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-45 R523 10K 150 mV RMS (25 KHz) (Rx) 75 mV RMS (25 KHz) (Rx) R516 NU C512 6.8pF R522 100K C514 16pF R512 150K 4 2 R514 100K 3 Q520-2 IMX1 5V_A 1 R511 100K 5 2 DEMOD 6 8 1 R513 6 8 3 R515 7 4 5V_A 5 OPT_RX_AUD_SEND_DETECTOR 4 U510-1 LM2904 C511 220pF VHF UHF R513 Not Placed 100k R515 Not Placed 0 R516 Not Placed Not Placed R517 0 R518 220K C513 220pF Q520-1 IMX1 C518 0.1uF C460 0.
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12-46 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) USWB+ U310 TK71750S 5V 1 5 VIN VOUT 3 CTRL 4 BYPASS F301 3A 5V GND POS NEG DATA 7.5 V NC 2 C301 390pF J301 VR301 C303 33uF D301 C304 .01uF C311 .018uF C310 .01uF C313 .01uF C312 10uF MMBZ5250B 20V 5R D3_3V 5 V (Rx) BATT_CHARGE Q311 C314 1200pF NC C302 390pF C305 100pF C306 .01uF VR302 MMBZ5250B 20V R313 10K R312 20K 0 V (Tx) R310 100K 0 V (Rx) 5 V (Tx) C315 1200pF RX_ENA 3.
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-47 C478 D301 7 6 C465 J470 R469 R483 L471 D470 R489 5 8 R482 R63 VR473 C301 1 U480 VR475 4 2 R281 3 R61 1 C S440 C C306 2 J301 8 L281 VR110 2 C91 C92 5 U110 C116 C113 C523 C117 4 L1 J140 C10 C3 M140 L21 S442 C5 C11 CR1 R25 3 C2 C9 C21 C4 L2 C6 L3 R22 S443 C23 C46 C521 R24 C25 L55 C47 C32 SH1 C522 Q21 C34 C33 C230 C233 C36 C29 C31 C39 25 L33 L31 C28 C38
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12-48 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) R23 R111 C159 C109 R155 R153 C173 D440 3 C105 R488 R498 Q493 R509 VR474 C481 R486 R311 C314 R310 TP404 R485 Q482 D491 2 C484 Q490 4 3 R508 Q481 R487 R484 R499 R497 C495 R494 R495 U511 C483 R491 R493 8 R490 1 U490 5 3 4 4 J491 C316 C490 C498 R492 R476 C479 2 4 L103 4 R104 C472 C496 R479 Q312 R312 Q313 C107 C474 C492 C273 C270 TP150 C106 2 3 C108 Q100 R477 Q47
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UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) UHF (438-470 MHz) Radio Parts List (8486348Z13-C) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C20 C21 C23 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C41 C42 C43 C44 C45 C46 C47 C48 C49 C51 C52 C53 C55 C56 C57 C58 C59 C60 Motorola Part No.
PAGE 232
12-50 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) Circuit Ref C400 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 Motorola Part No.
PAGE 233
UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) Circuit Ref Q481 Q482 Q490 Q493 Q494 Q520 R20 R21 R22 R23 R24 R25 R40 R51 R52 R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 Motorola Part No.
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12-52 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) Circuit Ref Motorola Part No.
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UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-53 Chapter 12 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 USWB+ 5V 5V 5T 5T 5R 5R 3V USWB + 5T USWB 5T 3V 5V 5R + USWB + TX_ENA TX_ENA 5R PWR_SET 5V TX_UHF_R3 PWR_SET DEMOD DEMOD BW_SEL BW_SEL RX_FE_UHF_R3 RX_BE CONTROLLER RSSI IF_OUT IF_IN RX_IN RX_OUT TX_INJ RSSI RX_INJ MOD_OUT MOD_IN 16_8_MHZ 16_8_MHZ SYNTH_CS SYNTH_CS 5V 3V 5R 3V 5V 3V
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12-54 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Front End FE_5R 5R 1 SH1 SHIELD SH40 SHIELD C26 R21 91 R20 5.6K 390pF 4 2 5 Q22 UMT1 C20 1 1 C25 6 390pF 3 390pF R23 27K L55 22nH C99 0.1uF R22 5.6K C23 C521 R24 4.2V C523 C2 IF 1 RX_IN C1 8pF 1.25% 1.1% 9.1pF L1 9.85nH 2% C3 C5 4.3pF 2.3% C4 1.25% 8pF 10pF 1.0% 6% 0.5pF 1.3% 7.5pF C12 L2 9.85nH 2% NU C9 C8 C6 C7 2.3% 4.3pF 9.1pF 1.1% CR1 C11 1.6% 6.2pF 3 L3 9.
PAGE 237
UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-55 RX Back End (Overtone) 7 1 C68 U52-1 TC7W04F FL53 CFWC455E R65 39K 0.1uF 1 IN R66 20K OUT 2 0V for 12.5kHz C69 R63 39K D51 0.1uF 2 1 IN 1 SH50 SHIELD 8 U52-4 PWR_GND 3 5 SH52 SHIELD 1 GND 3 2 C74 R62 3.3K NC VCC 1 OUT 2 R67 20K GND1 U52-3 TC7W04F D52 R64 20K FL54 CFWC455G 3 5V 4 2 6 R60 2.4K 1 3 4 1 IN 4 C63 C62 FL52 FLTR 9180468V04 0.1uF 0.
PAGE 238
12-56 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Synthesizer FN_V_SF 4.5V R230 20K R247 43K V_SF C231 C232 C233 1000pF 0.1uF 4.7uF SH201 SHIELD SH200 SHIELD FN_LOCK 6 22 33 44 LOCK NC NC NC C241 FN_PRESC NC NC 42 CCOMP 18 REFSEL NC 32 PREIN 27 SFBASE 26 SFCAP PRESC C240 1.3pF 7.7% 100pF 31 NC3 29 NC2 17 NC1 2.
PAGE 239
UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-57 UHF R3 VCO V_SF L270 4.5V 220nH 330 390pF 3V R274 33 390pF 27nH D251 C253 C255 1.6% 6.2pF C254 1.1% 9.1pF C256 3.3pF 3.0% L254 12.5nH 2% 3.9pF 2.5% .01uF L271 NU R271 5.1K R272 6.2K 1 2 3 4 5 6 16 15 20 19 R253 TX_IADJ RX_IADJ SUPER_FLTR COLL_RFIN RX_BASE RX_EMITTER TX_BASE TX_EMITTER FLIP_IN TRB_IN 47 R V_STEE 3.2V to 9.
PAGE 240
12-58 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Tx PA_USWB+ USWB+ PA_TX_EN A TX_ENA C170 5 4 390pF 6 Q170 Q171 EMB10 SH100 SHIELD 2 3 1 C525 1 C172 390pF C157 C154 0.1uF 390pF R120 150 390pF R152 R158 C160 1.5K 0.1uF C151 390pF C156 Q150 3 8 1 R157 2 1 U150-1 LM2904 PA_PWR_SET 57R01 2 4 100K 1% 2.2K 3 C159 4 390pF C153 R156 330 U150-2 C152 LM2904 390pF C121 R151 R154 5 8 U151 390pF 6 7 1 .
PAGE 241
UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-59 5V +3 V 3V SW_B + SW_B 5V Controller VS_AUDIO_SEL CNTL_PWR_SET OPT_MI C PWR_SET OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN SW_B + 25 OPT_RX_AUD_SEND_UNMUTED 24 23 OPT_RX_AUD_RETURN 22 21 VS_GAIN_SEL 10 9 C500 8 7 1000pF 6 5 4 C503 1000pF BATT_CHARGE RESET SC I ASFIC_CS F1200 uP_CL K BOOT_ENA HSIO 16_8_MHZ C501 CNTL_SPI_CLK 1uF SPI_CLK CNTL_SPI_DATA_OUT SPI_DATA_OUT R502 100 3 2 1
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12-60 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Microprocessor D3_3 V D3_3V R416 20K R410 10K D3_3V C410 C411 C412 10uF 0.1uF 1000pF C413 R412 100K 0.1uF 8 6 1 3 7 5 TP405 VCC SCK CS 2 WP SO HOLD SI VSS 4 TP402 C418 R417 10K 0.1uF Q410 1 1 R411 6 1 SC I 820 SH401 SHIELD SH400 SHIELD C419 2 1000pF 3 U402 1 R419 4.7K 4 1 X25128-2.
PAGE 243
UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-61 R516 R523 NU C512 10K C514 6.8pF R522 16pF 100K R514 R512 150K LM2904 R511 2 100K 3 DEMOD Q520 8 1 R513 8 R515 7 1 5 IMX1 C518 6 IMX1 6 C460 0.1uF VR471 C511 C513 R518 220K 220pF 220pF R519 100K C519 4 R470 OPT_RX_AUD_SEND_DETECTO R 5 4 5V_A 3 Audio Q520 5V_A 100K U510-1 4 2 U510-2 0.1uF 2.
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12-62 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) DC Regulation USWB+ J301 POS NEG DATA U310 TK71750S VR301 MMBZ5250B F301 3A C301 D301 NC 47pF 20V C303 C304 33uF .01uF 1 VIN 5 VOUT 3 4 CTRL BYPASS GND 2 C310 .01uF 5V C311 C312 C313 .018uF 10uF .01uF Q311 5R D3_3V BATT_CHARGE C314 VR302 MMBZ5250B C302 C305 C306 390pF 100pF .
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UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-63 4 J470 R469 C476 2 R483 VR301 C473 C489 L471 R481 C482 4 1 U480 VR475 5 8 R61 R482 R63 VR473 R489 C301 D470 3 E452 3 4 2 1 C S440 C C306 2 J301 8 VR110 L281 2 C92 C91 C7 C116 C12 C4 C8 C6 C3 C117 J140 4 L1 M140 S442 C523 C2 L21 C10 R24 C23 R22 R25 C5 CR1 C21 C11 3 L2 C9 S443 C521 SH1 C46 C25 L3 C32 Q21 C47 C522 C28 L55 C36 C34 C33 C230 C233 L33 C30 C
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12-64 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) L140 C137 C133 SH100 TP150 R111 C107 D440 L103 2 3 C105 4 R104 3 Q100 R499 R488 D491 R498 4 3 C495 R507 Q493 Q481 C481 R509 R486 VR474 R485 Q482 R508 R495 R494 2 R487 R484 C484 3 4 C483 R491 8 R490 1 U490 5 R497 Q490 U511 R492 C499 C490 C498 4 2 4 C102 C479 R493 R311 C314 C316 L131 C132 L100 L141 C112 C106 R476 C474 R477 C492 3 4 L110 R105 C108 L101 C101 Q311
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UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF (465-495 MHz) Radio Parts List (8486634Z02-O) Circuit Ref C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C20 C21 C23 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C41 C42 C43 C44 C45 C46 C47 C48 C49 C51 C52 C53 C55 C56 C57 C58 C59 C60 Motorola Part No.
PAGE 248
12-66 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Circuit Ref C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C412 C413 C414 C415 C416 C417 C418 C419 C420 C421 C422 C430 C431 C432 C433 C440 C441 C442 C443 C444 C445 C446 C447 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 Motorola Part No.
PAGE 249
UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Circuit Ref R22 R23 R24 R25 R40 R51 R52 R53 R54 R55 R57 R60 R61 R62 R63 R64 R65 R66 R67 R72 R73 R74 R75 R76 R77 R78 R80 R81 R82 R90 R91 R100 R101 R102 R103 R104 R105 R106 R107 R110 R111 R120 R121 R150 R151 R152 R153 R154 R155 R156 R157 Motorola Part No.
PAGE 250
12-68 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Circuit Ref U52 U110 U150 U151 U201* U251 U310 U320 U330 U401* U402* U403 U404* U451 U480 U490 U510 U511 VR110 VR301 VR302 VR471 VR472 VR473 VR474 VR475 Y51 Y70 Y201* Y202 Motorola Part No. Description 5109522E10 TC7W04F 0186438Z02 RA07M4452M_UHF 5113818A01 LM2904 2484657R01 57R01 5185963A27 63A27 5105750U54 50U54 5102478J01 TK71750S 5185963A55 LP2986 5102479J01 TK71730S 5102226J56 MC68HC11FL0 5102463J64 X25128-2.
PAGE 251
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MOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc. All other product or service names are the property of their respective owners. © 2005 Motorola, Inc. All rights reserved. Printed in U.S.A.