Technical Manual
Table Of Contents
- Vocoder and Controller Boards Detailed Theory of Operation
- Introduction to This Section
- General
- Vocoder Board
- Controller Board
- Switching Regulator
- RX Signal Path
- TX Signal Path
- Controller Bootstrap and Asynchronous Buses
- Vocoder Bootstrap
- SPI Bus Interface
- Universal Connector and Option Selects
- Keypad and Display Module
- Controls and Control Top Flex
- Controller Memory Map
- Vocoder Memory Map
- MCU System Clock
- DSP System Clock
- Radio Power-Up/ Power-Down Sequence
- Notes
- Secure Modules
- Disassembly/Reassembly Procedures
- Troubleshooting Procedures
- Troubleshooting Charts
- Troubleshooting Waveforms
- Troubleshooting Diagrams
10-2
Chart 20. Volume Set Error............................................................. 10-22
Chart 21. Zone/Channel select Error .............................................. 10-23
Chart 22. Top/Side Button Error .....................................................10-24
Chart 23. Radio Power-up Fail........................................................ 10-25
Chart 24. Bootstrap Fail.................................................................. 10-26
Chart 25. 800 MHz No TX Deviation.............................................. 10-27
Chart 26. VHF/UHF No TX Deviation.............................................. 10-27
Chart 27. No RX Audio................................................................... 10-28
Chart 28. VHF/UHF/800 MHz Receiver RF....................................... 10-29
Chart 29. VHF/UHF Frequency Generation Unit (FGU).................... 10-30
Chart 30. 800 MHz Frequency Generation Unit (FGU).................... 10-30
Chart 31. VHF/UHF Voltage Controlled Oscillator (VCO) ................ 10-31
Chart 32. 800 MHz Voltage Controlled Oscillator (VCO) ................ 10-32
Chart 33. 800 MHz DC Switch....................................................... 10-33
Chart 34. VHF/UHF DC Switch ....................................................... 10-33
Chart 35. 800 MHz Transmitter RF................................................. 10-34
Chart 36. VHF/UHF Transmitter RF ................................................. 10-35
Chart 37. VHF/UHF Only, VCO Crossover Frequency Tune ............. 10-36
NOTE: µC is used in several of the following
troubleshooting charts.
µC = MCU