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FO-2970MU

FO-2970MU FO-2950MU

Control PWB DCEKC182PSCZZ DCEKC388NSCZZ

TEL/LIU PWB DCEKL259CSC01 DCEKL222CSC01

Modem speed 33,600 bps 14,400 bps

No. 00ZFO2970USME

Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintain-

ing the safety and performance of the set.

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

SHARP CORPORATION

SERVICE MANUAL

Laser Wave Length : 780 ±15 nm

Laser Pulse Times

: (13.95 ± 3 µs)/7mm

Laser Output Power : 0.4 mW ± 0.05mW

CAUTION

This laser facsimile is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard.

This means that this machine does not produce a hazardous laser radiation. The use of controls, adjustments or performance of

procedures other than those specified herein may result in hazardous radiation exposure.

This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eyes retina, there is

danger of spot damage to the retina.

The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.

1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not an individual part.

2) Do not look into the machine with the main switch turned on after removing the toner/developer unit and drum cartridge.

3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing

the optical system.

4) The cover of Laser Printer Unit contains the safety interlock switch.

Do not defeat the safety interlock by inserting wedges or other items into the switch slot.

FACSIMILE

MODEL FO-2970M

Difference between FO-2970MU and FO-2950MU

Chapters 1, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-2950MU. Please refer to

previous service manual UX-4000MU/FO-2950MU/C (00ZUX4000USME) for these chapters.

SELECTION CODE DESTINATION

U U.S.A.

Summary of content (114 pages)

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FO-2970MU SERVICE MANUAL No. 00ZFO2970USME FACSIMILE MODEL FO-2970M SELECTION CODE U DESTINATION U.S.A. Chapters 1, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-2950MU. Please refer to previous service manual UX-4000MU/FO-2950MU/C (00ZUX4000USME) for these chapters.
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FO-2970MU CONTENTS CHAPTER 1. GENERAL DESCRIPTION [1] Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 [2] Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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FO-2970MU CHAPTER 1. GENERAL DESCRIPTION [1] Specifications • GENERAL Effective Scanning width 8.3" (210 mm) max. Effective Printing width 8.0" (208 mm) max. Reception modes Fax/Tel/A.M. Scanning speed 8 ppm (letter paper) Automatic dialing Rapid Key Dialing: 20 numbers Speed Dialing: 100 numbers Memory size* 4 MB (approx. 300 pages) Modem speed 33,600 bps (max.) Automatic fallback to lower speeds. Full Dual Access Yes Transmission time* Approx.
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FO-2970MU [2] Operation panel 1 2 3 4 5 6 7 8 9 10 11 12 13 TEL FAX A.M.
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FO-2970MU CHAPTER 2. ADJUSTMENTS [1] Adjustments General Output +5V +24VH +24V* Since the following adjustments and settings are provided for this model, make adjustments and/or setup as necessary. 1. Adjustments Adjustments of output voltage (FACTORY ONLY) PIN No. 1. Install the power supply unit in the machine. 3. When the document is loaded, power is supplied to the output lines. Confirm that outputs are within the limits below.
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FO-2970MU 2 DC bias output voltage adjustment VR1 (MC output voltage adjustment volume) Adjust VR2 so that the output voltage is –310V ±5V For measurement, use the high voltage tester (effective value meter). – DC-Bias Output voltage check + DRUM DC-Bias – DC-Bias Output voltage check + VR2 (DV bias output adjustment volume) Fig.
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FO-2970MU 3. IC protectors replacement ICPs (IC Protectors) are installed to protect the TX motor drive circuit and verification stamp drive circuit. ICPs protect various ICs and electronic circuits from an overcurrent condition. CNPRT CNRTH CNFUSE The location of ICPs are shown below: CNLIUA CNPN (1) F100 (ICPS10) is installed in order to protect IC’s from and overcurrent generated in the verification stamp drive circuit. If F100 is open, replace it with a new one.
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FO-2970MU [2] Diagnostics and service soft switches 1. Operating procedure 1-2. Print diagnosis Two kinds of diagnoses are supported. This diagnosis is concerned with the print which is used for production and service support. 1-1. Fax diagnosis Entering the diagnostic mode This diagnosis is concerned with the main body of fax which is used for production and service support. 9 Press FUNC display will appear. Entering the diagnostic mode 9 Press FUNC display will appear.
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FO-2970MU 4) Panel key test 2. Diagnostic items description This is used to check whether each key is normally operated or not. According to the key input, LCD is displayed. 1) When the START key is pressed while PANEL KEY TEST is being displayed, a test will start. Since all of the LEDs will light up in sequence until the test is finished, the LED operation can be checked as well. 2) Press all of the keys one at a time, but do not press the STOP key.
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FO-2970MU 9) Auto feeder mode 2-2. Print diagnosis The auto feed function can be checked by inserting and discharging the document. (After entering this mode, when a document is placed in the machine and the START key is pressed, the operation will start.) After this mode is activated, the document size A4(A4 ) and sensor information A4(A4 ORG) are displayed when the document sensor is turned. Rapid key 01: Area print mode The effective printing area frame is printed in the specified sheet size.
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FO-2970MU Rapid key 05: Paper feed aging Rapid key 07: Life all clear The mode is used for aging related to the printing. In this mode, the following modes are provided. Blank paper aging mode (ALL WHITE AGING) Whole black print aging mode (ALL BLACK AGING) 4% printing aging mode (4% AGING) After selecting the paper-feed aging mode in the print diagnosis mode, input the number of each mode above with the ten-key, and the mode will be executed.
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FO-2970MU Rapid key 10: Life clear mode The mode is used to respectively clear the life counter of the printer and the counter of the auto feeder. For setting, proceed with the following procedure. 1 When the life counter clearing mode is selected, the following will be is displayed. Seven counters can be selected with the "#" and " " keys.
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FO-2970MU 3. How to make soft switch setting To enter the soft switch mode, make the following key entries in sequence. Press FUNCTION 9 8 7 START 01 START SFT S W 1 = 0 0 0 0 0 0 0 0 Press FUNCTION key. SFT S W 1 = 1 0 0 0 0 0 0 0 Press key. Press key. SFT S W 1 = 1 0 0 0 0 0 0 0 SFT S W 1 = 1 0 0 0 0 0 0 0 Bit1 - 8 are set. SFT S W 1 = 1 0 0 0 0 0 0 0 Press START key during setting. SFT S W 2 = 0 0 0 0 0 0 0 0 Soft SW2 - 65 are set.
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FO-2970MU 4. Soft switch description • Soft switch SW DATA NO. NO. SW1 SW2 SW3 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 SW4 1 0 Recall interval Binary input No. = 8 1 0 4 2 1 2 3 0 1 4 1 (5 x 60 sec = 5 min) Recall times Binary input No.
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FO-2970MU SW DATA NO. NO. 1 2 3 4 SW6 H2 mode MH fixed Reserved Reserved Modem speed (DCS data reception speed) 5 6 7 8 Reception speed fixed 1 2 3 Switch setting and function ITEM DIS receive acknowledgement during G3 transmission 1 Initial setting 0 No Yes Yes No (depends on remote machine) Remarks 0 0 0 0 V.17 V. 29 V. 27ter 14400 12000 9600 7200 9600 7200 4800 2400 No. 5 1 1 1 1 0 0 0 0 No. 6 0 0 0 0 0 0 0 0 No. 7 0 1 0 1 0 1 1 0 No. 8 0 0 1 1 1 1 0 0 NO V. 17V. 29- V.
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FO-2970MU SW DATA NO. NO. End buzzer 1 2 3 SW11 SW12 SW13 SW14 SW15 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Switch setting and function ITEM Communication error treatment in RTN sending mode (reception) CNG transmission after auto dialing Error criterion Pulse to tone change by key CNG transmission in manual transmission Reserved DTMF signal transmission level (Low) Reserved Reserved Reserved DTMF signal transmission level (High) 1 3 sec No. 1 0 No.
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FO-2970MU SW DATA NO. NO. SW16 1 2 3 4 5 6 7 8 Switch setting and function ITEM 1 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Speaker volume (3 stages) No. 1 No. 2 Hand-set receiver volume (3 stages) 3 4 No. 3 No. 4 Ringer volume (4 stages) 5 6 No. 5 No. 6 Key volume SW18 7 8 1 2 3 4 5 6 7 8 No. 7 No.
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FO-2970MU SW DATA NO. NO. SW21 SW22 SW23 SW24 SW25 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 SW26 3 4 5 6 7 8 Switch setting and function ITEM Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Automatic reduce of receive Cut off mode (COPY mode) Paper set size 1 Auto Continue No. 3 No. 4 Letter 0 0 No. 1 No.
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FO-2970MU SW DATA NO. NO. SW27 SW28 SW29 SW30 SW31 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 ITEM Switch setting and function 1 0 Quiet detect time Binary input No. = 8 1 0 4 2 1 2 3 0 1 4 0 (4 sec) Quiet detect start timing Binary input No.
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FO-2970MU SW DATA NO. NO.
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FO-2970MU SW DATA NO. NO.
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FO-2970MU SW DATA NO. NO.
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FO-2970MU SW DATA NO. NO. SW53 SW54 SW55 SW56 SW57 SW58 SW59 1 2 3 4 5 6 7 8 1 2 3 4 ITEM Switch setting and function 1 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved V.34 mode sending speed 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Sending speed = 2400 (bps) x N Example: 2400 (bps) x 12 = 28800 (bps) 2400 (bps) is set for N = 0. 33600 (bps) is set for N = 15. V.
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FO-2970MU SW DATA NO. NO.
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FO-2970MU • Soft switch function description SW1 No. 1 ~ No. 4 Recall interval Choice is made for a recall interval for speed, rapid dial numbers, ten key +START and search + START. Use a binary number to program this. If set to 0 accidentally, 1 will be assumed. SW1 No. 5 ~ No. 8 Recall times Choice is made as to how many recall times should be made. Use a binary number to program this. SW2 No. 1 Dial mode Switch the type according to the telephone circuit connected to the facsimile.
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FO-2970MU SW5 No. 2 Date format SW7 No. 5 EOL detect timer Used to select date display/print formats. 25 seconds or 13 seconds are selected for the detection timer of EOL (end of line). This is effective against communication trouble on a specific type of long EOL. 0: DAY-Month-Year 1: Month-DAY-Year 0: 13 seconds SW5 No.
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FO-2970MU SW11 No. 1, No. 2 End buzzer SW10 No. 3, No. 4 CI off detection timer (Distinctive ring setting off only) The sounding length of the buzzer for normal end of operation set. Set the minimum time period of CI signal interruption which affords to be judged as a CI OFF section with 50ms steps. SW11 No.
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FO-2970MU SW17 No. 1, No. 2 Speaker volume (3 stages) SW19 No. 5, No. 6 Reserved Used to adjust sound volume from a speaker. Set to "0". SW17 No. 3, No. 4 Hand-set receiver volume (3 stages) SW19 No. 7 Reserved Used to adjust sound volume from a handset receiver volume. Set to "1". SW17 No. 5, No. 6 Ringer volume (4 stages) SW19 No. 8 Reserved Used to adjust ringing volume. Set to "0". SW17 No. 7, No. 8 Key volume SW20 No. 1 ~ No.
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FO-2970MU SW25 No. 1 Busy tone detection ON/OFF time (Shorter duration) SW33 No. 2 Reserved The initial value of detection is set according to electric condition. The set value is changed according to the local switch board. (Erroneous detection of sound is reduced.) Normally the upper limit is set to 900msec. and the lower limit to 150msec. If erroneous detection is caused by sound, etc., adjust the detection range. The lower limit can be set in the range of 350msec to 150msec. Set to "1". SW25 No.
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FO-2970MU SW49 No. 2 ~ No.8 Reserved SW59 No. 5 ~ No. 8 Reserved Set to "0". Set to "0". SW50 No. 1 ~ No.8 Reserved SW60 No. 1, No. 2 Reserved Set to "0". Set to "0". SW51 No. 1 ~ No.8 Reserved SW60 No. 3 Reserved Set to "0". Set to "1". SW52 No. 1 ~ No.3 Reserved SW60 No. 4 Reserved Set to "0". Set to "0". SW52 No. 4, No. 5 Reserved SW60 No. 5 ~ No. 8 Reserved Set to "1". Set to "1". SW52 No. 6 Reserved SW61 No. 1 ~ No. 4 Reserved Set to "0". Set to "0". SW52 No.
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FO-2970MU [3] Troubleshooting 1. Fax troubleshooting Refer to the following actions to troubleshoot any of the problems mentioned in 1-4. [1] A communication error occurs. [2] Image distortion produced. [3] Unable to do overseas communication. [4] Communication speed slow due to FALLBACK. • Increase the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8 May be used in case [1] [2] [3]. • Decrease the transmission level SOFT SWITCH 8-4, 5, 6, 7, 8 May be used in case [3].
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FO-2970MU [4] Error code table 1. Communication error code table G3 Transmission Code Final received signal Error Condition (Receiver side) 0 Incomplete signal frame Cannot recognize bit stream after flag 1 NSF, DIS Cannot recognize DCS signal by echo etc.
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FO-2970MU Super G3 mode Error Code Transmission Errors Reception Errors E-16 E-17 Same as E-0 Same as E-1 Same as E-0 Same as E-1 E-18 E-19 Same as E-2 − Same as E-2 Same as E-8 E-20 E-21 Same as E-4 − Same as E-9 Same as E-10 E-22 E-23 E-24 − Same as E-7 Same as E-8 − Same as E-7 − E-25 E-26 Same as E-11 Same as E-12 Same as E-11 Same as E-12 E-27 Same as E-13 Same as E-13 E-28 − Same as E-14 E-29 E-30 Error occured during handshaking for super G3 mode E-31 Details of
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SCAN LSI LC82103 CNCIS 4–1 SPEAKER OPERATION PANEL PWB LCD CNSP CNPN CNMT MODEM 33.6k bps ROM 8M bit CNLIU CNRTH SCANNER MOTOR CIS TEL/LIU PWB THERMISTER RTC CONTROL PWB ASIC LR38784 CPU SH7041 BAT CNPRT 4M bit DRAM ONLY PC-PRINT DRAM 1M x 16bit x 3 SRAM 1M bit PICK UP SOLENOID CNPL TONER SENSOR CNTNR PRINTER PWB CNFM FAN MOTOR SENTRONICS CABLE CNLSU CNMMT CNPW LASER UNIT PAPER FEED MOTOR POWER PWB CNHT HEATER LAMP PERSONAL COMPUTER FO-2970MU CHAPTER 4.
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4–2 PC 36 2 PICKUP SOLENOID CNTNR 5 CNPC HIGH VOLTAGE CIRCUIT 12 CN1 2 POWER SUPPLY UNIT INTERLOCK SWITCH CN2 2 HOOK SWITCH PWB CNHS2 2 CNHS1 TEL/LIU PWB AC 120V/60HZ LINE FAN MOTOR 3 CNFM PRINTER PWB HEATER LAMP THERMAL FUSE UNIT 3 CNFUSE 12 FJ CNLIUA TONER SENSOR LSU UNIT CNLSU 3 9 CNMMT BEAM DETECTOR PWB 5 CNMT 2 CNRTH CNLIUA AUTO POWER CONTROL PWB 4 PRINTER MOTOR 50 CNSP 2 SPEAKER EXT.
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4–3 FAN MOTOR PC TONER SENSOR LSU UNIT PRINTER MOTOR PICK UP SOLENOID PRINTER PWB HEATER LAMP CNPC 1 NSTOROBE 2 DATA1 3 DATA2 4 DATA3 5 DATA4 6 DATA5 7 DATA6 8 DATA7 9 DATA8 10 NACK 11 BUSY 12 PERROR 13 SELECT 14 NAUTOFD 15 N.C. 16 DG 17 DG 18 PLH 19 DG 20 DG 21 DG 22 DG 23 DG 24 DG 25 DG 26 DG 27 DG 28 DG 29 DG 30 DG 31 NINIT 32 NFAULT 33 N.C. 34 N.C. 35 N.C. 36 NSELECTON CNFM 1 VFMOUT 2 N.C. 3 MG CNTNR 1 +5V 2 TSEN 3 DG 4 N.C.
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FO-2970MU 3. Operational description CHAPTER 5. CIRCUIT DESCRIPTION Operational descriptions are given below: • [1] Circuit description When a document is loaded in stand-by mode, the state of the document sensor is sensed via the ASIC (IC15). If the sensor signal was on, the motor is started to bring the document into the standby position. With depression of the START key in the off-hook state, transmission takes place. 1.
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FO-2970MU [2] Circuit description of control PWB 2) M27C800-90F1 (IC14): pin-42 DIP (ROM) EPROM of 8M bit equipped with software for the main CPU. 1. General description 3) W24010S-70LET (IC1): pin-32 SOP (RAM) Fig. 2 shows the functional blocks of the control PWB, which is composed of 5 blocks. Line memory for the main CPU system RAM area and coding/decoding process. Used as the transmission buffer. MAIN CONTROL BLOCK Memory of recorded data such as daily report and auto dials.
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FO-2970MU SH7041 (IC5) Terminal descriptions Classification Power Code Vcc Vss Terminal No. 12,26,40, 63,77,85, 99,112,135 I/O I Power 6,14,28, 35,42,55, 61,71,79, 87,93,117, 129,141 I Ground Connect to the ground. Connect Vss terminals with the ground for all systems. If any open terminal remained, operation is impossible. I Program power source Connected with the power source (Vcc) for normal operation. In case of PROM mode, apply 12.5 V.
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FO-2970MU SH7041 (IC5) Terminal descriptions Classification Code Terminal No. I/O Data bus D0 ~ D15 (QFP-112) D0 ~ D31 (QFP-144) 45,46 56~60, 62,64~70 72~76,78 80~84 86,88~92 O Data bus Bilateral data bus for 16 bit (Pin plate QFP-112 ) or 32 bit (Pin plate QFP-144). Bus control CS0~CS3 49,50,53 54,56,57 O Chip select 0 to 3 Chip select signals for external memory or device. RD 43 O Read-out Shows reading-out from the external device.
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FO-2970MU SH7041 (IC5) Terminal descriptions Classification Serial communication interface (SCI) A/D converter I/O port Code Terminal No. I/O Name Function TxD0, TxD1 131, 134 O Transmitting data (Channels 0 and 1) Output terminal for transmitting data of SC10 to 1. RxD0, RxD1 130, 133 I Receiving data (Channels 0 and 1) Input terminal for receiving data of SC10 to 1. SCK0, SCK1 132, 136 I/O Serial clock (Channels 0 and 1) Input/output terminal for clock of SC10 to 1.
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FO-2970MU LR38784A (IC15) Terminal description (2) Panel control block Pin No. I/O Signal name Operation panel key scanning 1 – GND Operation panel LCD display 2 – GND The following controls are performed by the Gate array (LR38784). • • 3 I LCPD3 (3) ASIC/Printing control block 4 I LCPD4 1) ASIC [LR38784A 208pin (embedded gate array) functions(IC15) 5 I LCDREQ 1 Mapper 6 TO LEDDV4 Mapping can connect the modem and image handing LSI to a domain of CS2 (Chip Select 2).
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FO-2970MU LR38784A (IC15) Terminal description Pin No. I/O Signal name Pin No.
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FO-2970MU LR38784A (IC15) Terminal description Pin No. I/O Signal name Pin No.
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FO-2970MU 2) Printing control (PCU) The CPU and ASIC control printing. 1. Blockdiagram Laser scanning unit Laser start position sensor Main motor Motor driver Laser diode Scanning motor CPU (SH7041) and ASIC IEEE1284 I/F Connector (LR38784A) Heater lamp control circuit Driver Reset circuit Thermistor PIN sensor Driver POUT sensor High voltage generating circuit PE sensor Driver Solenoid Door switch Driver PUS Fig.
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FO-2970MU 3) Unit control c. Electrical connection a. Main motor drive circuit In the paper feed and transportation system, drive parts and sensors are connected as shown in the figure below.
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FO-2970MU d. High voltage unit control The high voltage unit outputs the following voltages: • Main charger voltage (DC-950V + AC600V peak to peak) • Transfer charger voltage (DC+2100V + AC600V peak to peak) • Developing bias voltage (DC-390V) The following signals are outputted from the CPU (ASIC) to control the above voltages. • MCON This signal is to turn on/off the main charger. When this signal is outputted, Q7 is driven to the high impedance state. Then Q9 conducts to drive transformer T2.
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FO-2970MU f. Laser scanning unit This unit controls the laser beam power and laser beam scanning. The control is performed with the signals inputted outputted to or from the CPU and ASIC. +5VL BD CIRCUIT Q601 A1015 R603 30K R604 820 D601 PD481PI CN604 Q602 C1815 1 2 2 SYNC- SYNCGND + 3 GND BD 3 C602 0.1uF C601 47uF/10V OUT IN 1 R601 +24V 130ohm/2W CN601 1 2 C603 0.
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FO-2970MU • Laser control signal 3) Starting operation LEND signal is controlled based on HSYNC signal. Warm-up operation of laser scanning is described below. For simultaneous APC control, SAMP signal is also controlled. The operation is made when the cover is closed from the open state, and is made before starting printing. These timings are made by ASIC. The line-end-off section is set by the register. The PMCLK signal is the clock signal for scanner motor speed control.
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FO-2970MU g.
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FO-2970MU 2) Protect against overheat Though the heater lamp ON signal (HLON) is normal, if triac PD101 and T2 are kept ON, overheat may result. • After printing, temperature is not controlled. • Fan motor starts revolving from the beginning of temperature control and stops 120 seconds after printing is finished. To prevent against this, temperature fuses are used.
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FO-2970MU i. Electrical connection Heater lamp: The 400W halogen lamp is used. This spring presses the pressure roller with a 690g pressure on one side. Thermistor: Thermistor of chip type with good response is used to respond to rapid heating (rapid warm-up of about 8 sec) of the heat roller. Temperature fuse 1 (132°C): Temperature fuse 1 is installed to the fusing cover. It blows off when the ambient temperature of the fusing cover rises abnormally (132°C).
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FO-2970MU j. Timing chart Continuous printing processing • Printing process *1 Waiting according to fixing temperature (Environmental temperature) Pre-revolution processing *2 Top margin Timing from DPAGE (internal signal of ASIC) to BIAS ON (pre-revolution processing) is specified. READY DPAGE Before rotation of printing (unit:sec) MM VSYNC PMD PRSTT APCSTT MM LEND_ 3.5 PMD 3.0 APCSTT HSYNC_ LEND LDATAEN HSYNC LD_ LDATAEN MC 1.03 3.5 ACSIN 0.7 44%DC ON LD_ AC SIN 68%DC ON 4.
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FO-2970MU k. Top margin control Top margin is set according to the number of lines (the number of HSYNC interrupt) from detail paper Pin On to LASER input. (4) MODEM control block 1) INTRODUCTION Conexant's FM336 modem is a V.34 half-duplex modem. It supports Group 3 facsimile transmission/reception at speeds up to 33,600bps in the V.34 half-duplex mode. In order to optimize the modem configuration for the line conditions, this modem uses V.34 technology.
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FO-2970MU FM336 (IC8) Terminal description PIN Signal Name Interface 3 I/O Type 1 RESERVED – 2 RS2 3 RS3 4 5 6 /WR 7 /RD 8 /RDCLK 9 /RLSD 10 TDCLK 11 TXD 12 PIN Signal Name RESERVED Interface 3 I/O Type – 51 – IA Host interface 52 VSUB GND – IA Host interface 53 VSS GND – RS4 IA Host interface 54 NC – NC /CS IA Host interface 55 NC – NC IA Host interface 56 SLEEP MI IA Host interface 57 VDD1 PWR – OA DTE Serial interface 58 RESERVED –
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FO-2970MU (5) Image signal process block LOCAL BUS CIS ASIC VIDEO SIGNAL LC82103 CLOCK (IC4) VREF+ VREF– Fig. 22 The CIS is driven by the LSI (LC82103), and the output video signal from the CIS in input into the LC82103. The ADC and buffer are provided in the LC82103, and the digital image processing is performed. n.
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FO-2970MU [3] Circuit description of TEL/LIU and Hook SW PWB 1. TEL/LIU block operation description (1) Block diagram LIU PWB CONTROL PWB HS CML GAIN -C CML TXOUT H SIGTX HS DETECTOR LINE L CI DETECTOR EXT. 0:CID 1:RX RXIN SIXGRX IC8 MODEM(FM336) TEL MUTE (H:MUTE) RX TEL IN TX TELOUT SPKR 0:MID 1:HIGH SP MUTE (H:MUTE) BZCONT 0:LINE 1:BZ BZCONT IC15 G.
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FO-2970MU [Signals for status recognition according to input signals] 5) Matching transformer Signal Name The matching transformer performs electrical insulation from the telephone line and impedance matching for transmitting the TEL/FAX signal. RHS Function H: The handset is in the on-hook state. (On the HOOK-SW PWB) L: The handset is in the off-hook state.
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FO-2970MU (Example: Fax signal send) LIU PWB CONTROL PWB HS CML GAIN -C CML TXOUT H SIGTX HS DETECTOR LINE L CI DETECTOR EXT. 0:CID 1:RX RXIN SIXGRX IC8 MODEM(FM336) TEL MUTE (H:MUTE) RX TEL IN TX TELOUT SPKR 0:MID 1:HIGH SP MUTE (H:MUTE) BZCONT 0:LINE 1:BZ BZCONT IC15 G.A LR38784A BZOUT SPEAKER MIC MUTE RCVOL VOL C VOL B VOL A SP MUTE TEL MUTE CI GAIN-C CML IC5 SH2 (7041) HS CI RHS +5VA +24VA DG HOOK-SW PWB Fig. 24 [4] Circuit description of power supply PWB 1.
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FO-2970MU T1 TRANSFORMER F1 NOISE FILTER CIRCUIT CN1 AC IN RECTIFIED SMOOTHING CIRCUIT SWITCHING CIRCUIT +5V CIRCUIT +5V +24V CIRCUIT +24VH +24V SW101 PC1 ZC ZERO CROSS CIRCUIT +24VS HEATER CIRCUIT HLON PC2 CN2 Fig. 25 [5] Circuit description of CIS UNIT This CIS unit picks up optical information from the document, converts it into an electrical (analog) signal and it to the control PWB. 2. Description of blocks 1.
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8 7 6 5 BR2 10K x 4 1 2 3 4 8 7 6 5 1 2 3 4 BR3 10K x 4 8 7 6 5 6–1 CS0 CS1 CS2 CS3 RD WRL WRH RAS CASL CASH RDWR DREQ0 DREQ1 DRAK0 DRAK1 DACK0 DACK1 WDTOVF RES CK EXTAL XTAL PLLCAP PLLVCC PLLVSS AVREF AVCC AVSS PF7/AN7 PF6/AN6 PF5/AN5 AN4/PF4 PF3/AN3 PF2/AN2 PF1/AN1 AN0/PF0 N.M. 3 4 BR11(B) 10K x 4 6 5 IC5 SH7041 32bit RISC MICROPROCESSOR NMI A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 MD3 MD2 MD1 MD0 VCC VCC VCC VCC VCC VCC VCC VCC VCC +5V E ZC C324 N.M.
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6–2 BR18 10K x 4 4 3 2 1 /TPB /TPA TPB TPA USOUT LEDDV4 LEDDV3 LEDDV2 LEDDV1 1 2 3 4 8 7 6 5 B DG R251 10K +5V 5 6 7 8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 /PRAS /PCAS /PWR PA9 PA8 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 BR26 470 x 4 5 4 6 3 7 2 8 1 IC15 LR38784A GATE ARRAY 95 : GND 1 : GND C DG C247 1000P R229 10K /MDMINT D C244 1000P DG C277 18P C276 18P E C249 47P DG DG C275 18P F (2-6E) (2-6E) (2-6E) (2-6E) DG 2 14 31 49 51 52 70 84 105 106 118 126 137 147 151 155 156 164 169 180 189 20
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6–3 1 2 3 4 5 6 (2-1D) (2-1D) (1-5I) (2-1D) (2-1D) (2-1D) (2-1D) (2-1D) A DG C269 /WE2 /OE2 A[10:1] /CASLO /CASHO /RASO DG C272 /WE1 /OE1 (1-5I) C270 N.M. R265 100 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 C271 N.M.
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6–4 1 2 3 4 5 6 (9-5C) A AO +5VR D105 DA204K DG Reading block A B B R186 N.M. DG C E R340 2.2K +5VR B Q101 2SA1037K Q100 2SA1037K B DG C E R116 N.M. 2.2K R331 +5VR C C C214 30P DG 4 2 C215 30P D R224 0 R226 0 DG R225 1M X3 16MHz 1 DG 7 3 14 +5V IC18B 74HCU04 R332 0 D DG 7 1 14 +5V 2 IC18A 74HCU04 R223 68 AIN E CK16M (2-1C) (4-5E) C259 0.
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6–5 1 2 3 4 5 6 A C104 1 +5V 2 A DG 1 3 DG REG1 XC62FP3302P K D100 1SS355 C376 0.1 Modem block A B MAG +5VA +3.3V C58 22/50 C57 22/50 +3.3V C322 1 B C /MDMINT C379 0.1 2 MAG L101 10 (2-1D) 1 C DG DG C382 18P (2-1D) 6 R390 18P D[7:0] 1 2 +3.3V D R380 100 X2 28.224MHz D0 D1 D2 D3 D4 D5 D6 D7 DG MAG R379 47K R398 N.M R378 TP204 10 A0 A1 A2 A3 A4 100 100 68 C381 2200P DG C380 2200P DG R377 4.7K /MDMRST 5 D 0.1 0.1 0.1 0.1 0.1 0.
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6–6 1 A (9-5A) (1-1D) DG C54 N.M DG E C TELIN DG RCVOL N.M C55 VREF (2.5V) R395 4.7K R178 10K +5V +5VA R100 1.5K B DG R327 3.3K 7 14 DG R330 3.3K C133 0.1 5 IC1D NJM2902M – 13 + 12 C35 0.1 C131 R138 1 1.5K R101 47K +24VA DG 11 4 TXA2 TXA1 DG VREF R386 (2.
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6–7 A TPA TPB /TPA /TPB LAMPON MRES R133 10K DG C351 15P DG N.M. DG MG MG C228 1 B 8 G 7 6 5 4 1 2 3 C407 1000P VOUT VCC COM IC6 ULN2003A C189 1000P 9 10 11 12 13 16 15 14 IC20 PST596 1 M/R 2 SUB 3 GND 4 5 C 2 1 Q1 2SC4081 SW1 C323 DG R242 4.7K E C +5V TXPA TXPB /TXPA /TXPB GLED TX24V F100 KAB2404 801 +24V B ZD2 RD22FB3 R239 10K R241 1K +5V C (9-3C) (9-3C) (9-4C) (9-4C) (5-5B)(9-5D) (9-3C) DG N.M.
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6–8 1 2 3 4 5 6 (1-6I) (1-5I) A D[15:0] A[21:0] Other block A D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 A21 A20 A19 A18 A17 A16 A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 B B 4 3 2 1 5 6 7 8 +5V 4 3 2 1 5 6 7 8 +5V BR12 10K x 4 BR1 10K x 4 C 4 3 2 1 5 6 7 8 4 3 2 1 5 6 7 8 C BR29 10K x 4 BR27 10K x 4 4 3 2 1 5 6 7 8 4 3 2 1 5 6 7 8 D BR13 10K x 4 BR21 10K x 4 D 4 3 2 1 5 6 7 8 R270 10K BR30 10K x 4 E 4 3 2 1 5 6 7 8 E BR14 10K x 4 4 3
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6–9 C193 56P C190 56P C191 56P C192 56P RS E LD0 LD1 LD2 LD3 LEDDV1 C R364 10K R365 10K R366 10K C208 C237 C209 C238 C210 C241 C211 C242 C212 C243 C236 1 C207 C235 C206 C234 C205 C233 D 1 1 1 2200P 2200P 1000P 1000P 1000P 1000P 1000P B DG 12 13 14 15 16 17 18 19 20 21 22 B22B-PHDSS-B CNPN LEDDV2 LEDDV3 LEDDV4 /FRTSNS /ORGSNS /SEN0 /SEN1 /SEN2 /SEN3 /SEN4 /B4SNS (2-3B) (2-3B) (2-3B) (2-6E) (2-6E) (2-2A) (2-2A) (2-2A) (2-2A) (2-3A) (2-6E) E (6-4H) (6-3H) SP+ SP– MG +24V DG C257
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FO-2970MU Control PWB parts layout (Top side) 6 – 10
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FO-2970MU Control PWB parts layout (Bottom side) 6 – 11
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6 – 12 B C AR1 RA-391P-V6-2 C SW1 HOOK SW 3 EX RING EX TIP B 2 M 1 VA1 ERZVA5D471 RING TIP A +24VA CNHS1-2 N.M. A D2 1SS133 K CML JP5 L7 HOOK SW PWB(F3134) CNHS1-1 MJ2-4 MJ2-3 MJ1-4 MJ1-3 DG E B N.M. Q102 DTC114EK C DG L8 JP6 B CML RHS DG CNLIUA-4 CNLIUA-7 (1-3G) CNHS2-2 CNHS2-1 N.M. N.M. RHS L5 R-5C JP3 L4 R-5C JP2 VA2 ERZVA5D471 C100 0.1 2 2 ARG 1 1 L3 R-5C L2 R-5C ZD1 RD2.2FB2 R1 91 VREF R2 30 +24VA C DG R105 1K R106 1K +5VA N.M.
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FO-2970MU TEL/LIU and Hook SW PWB parts layout (Top side) 6 – 13
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FO-2970MU TEL/LIU and Hook SW PWB parts layout (Bottom side) 6 – 14
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6 – 15 C35 1000P/6KV A B DG 3 2 K C DG A 6 T1 0022GC 7 10 12 ZD3 RD30JS DG 5 R40 1 560 6 2 D DG C22 1000P R38 1M 2 Q3 C1815 DG 1 DG 3 1 Q6 A933S 3 R39 5.1K CNPL 1 +24V 2 PUS S2B-PH-K-E DG 2 A K E R15 4.7K 2 DG DG C14 4700P R33 62 DG +24V C45 1000P 1 2 DG DG D1 DSM1D R41 330K R57 100M RK(1/2W) 1 FG K D9 SHV-02 A A C20 0.015(F) VR2 RH0165(200K) R53 3.9M(1/2W) RCR50 C36 1000P/6KV C37 1000P/1KV A K C33 1000P/3KV Q5 2SD1264 R17 10K R16 15K R32 3.
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6 – 16 MG 25a 24a 23a 22a 21a 20a 19a 18a 17a 16a 15a 14a 13a 12a 11a 10a 9a 8a 7a 6a 5a 4a 3a 2a POUT MG VFM +24VH DG +5V NINIT NFAULT PERROR NACK DG DATA7 DATA5 DATA3 DATA1 PWRLY TC/BIASON MCON PMD APCSTT SAMP MB MEN TSEN PIN B DG MG DG ZC MCON PUS TC/BIASON HLON PWRLY +24VS MEN MA MB PWMSIN +24V +24VH +5V (1-1F) (1-3I) (1-3I) (1-3I) (1-3I) (1-3I) (1-1F) (1-6I) (1-5I) (1-5I) (1-3I) C DG C46 47/35 B DG E C D Q1 DTC114 R2 4.
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FO-2970MU Printer PWB parts layout 6 – 17
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6 – 18 A 1 PC3 (OPTION) R54 (OPTION) B C5 C1 L1 F2 BEA1 C8 Q1 C15 C3 Z1 R5 R19 R3 R2 C Q2 C9 R6 R8 R13 R11 D7 ZC R23 C7 D5 R7 C5 C10 R12 D4 R21 R20 TRA1 D C11 D6 R17 1 3 CN2 R16 R10 PC1 R9 D T1 C301 D301 C101 D101 RL1 D501 E C103 E R120 IC301 D202 PC2 R501 R102 D110 F F R106 C105 R103 PC1 R504 R503 R502 Q101 R101 R53 (OPTION) R52 (OPTION) R51 (OPTION) D52 (OPTION) D10 NTC1 D11 F1 R1 C2 (OPTION) PC2 C22 C VR101 R105
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FO-2970MU Power supply PWB parts layout CN1 C15 C7 C10 Q2 D6 D7 PC3 D5 R13 PC1 R12 R11 R9 R3 C9 T1 R17 R7 R6 D4 BEA1 R19 Q1 2 C 8 1 R20 PC2 R21 1 R101 R131 R102 J103 R130 F101 C302 C301 C101 D202 IC301 D101 J105 Q501 CN101 J101 D110 VR101 R504 R503 R103 R502 R501 Q101 R120 R105 R509 R507 C103 R132 J104 R505 SW101 6 – 19 C105 R106 R10 D51 TRA1 J1 R508 R8 C8 C6 RL1 J102 C5 C3 NTC1 D13 Z1 L1 F2 C2 D12 R1 R51 R52 R53 R54 CN2 1 D501 R2 R16 D52 C22 R23 D301
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6 – 20 1 2 3 4 5 6 B C Q2 DTC114ES DG (TONER) (P-CHK) (TEL/FAX) (PC IN USE) 2 2 2 2 1 1 1 1 LED2 RED LED1 RED LED4 GREEN LED3 GREEN R2 R1 R6 R5 220 220 220 220 E-MAIL SPEAKER HOLD/ SEARCH REDIAL SPEED DIAL A +5V E STOP START COPY RECEPTION FUNCTION DOWN 16 11 06 01 F CNPN 1 2 3 4 5 6 7 8 9 10 11 UP 17 12 07 02 DG +5V DG +5V RS E LD0 LD1 LD2 LD3 P-CHK DG 18 13 08 03 R4 6.
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FO-2970MU PARTS GUIDE MODEL FO-2970M SELECTION CODE U DESTINATION U.S.A. CONTENTS 1 Cabinet, etc.
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FO-2970MU [1] Cabinet, etc.
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FO-2970MU NO. PARTS CODE PRICE RANK NEW MARK PART RANK DESCRIPTION [1] Cabinet,etc.
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FO-2970MU [2] Operation panel unit 3 901 6 8 9 2 5 7 4 10 1 B1 12 B1 B1 11 [3] Document guide upper unit 14 10 10 13 15 4 6 14 7 12 B2 B1 6 16 2 B2 B2 9 B1 5 17 3 19 11 8 21 11 8 21 18 1 1 20 –3–
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FO-2970MU NO.
PAGE 86
FO-2970MU [4] Drive unit B1 9 8 B1 7 2 5 1 6 4 3 [5] Scanner frame unit 10 7 8 10 11 B1 14 2 13 4 1 12 B1 11 Drive unit 3 6 9 5 –5–
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FO-2970MU PARTS CODE NO.
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FO-2970MU [6] Printer frame 24 10 B2 3 23 Upper frame 37 A 9 10 15 33 21 B2 12 28 11 B4 8 36 5 B2 18 7 26 34 19 22 B4 B2 B2 13 B1 B3 14 1 25 B4 B3 4 17 1 Lower frame Fusing unit 20 6 16 2 B2 31 B6 B1 B6 B6 B6 B6 29 B6 30 B2 A B5 B6 37 35 32 27 –7– 27 B3
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FO-2970MU NO.
PAGE 90
FO-2970MU [7] Upper frame B1 12 8 6 23 10 21 20 23 9 7 1 4 11 B2 3 5 B2 19 13 3 15 16 W1 W2 B3 2 W3 22 18 14 17 –9–
PAGE 91
FO-2970MU NO.
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FO-2970MU [8] Lower frame 25 27 14 24 26 5 14 18 16 21 22 30 1 B2 32 17 W3 1 8 3 29 30 7 17 22 W3 11 W1 B3 31 15 B1 W2 4 B1 20 2 6 23 9 10 13 19 – 11 – 28 12 W2 B1
PAGE 93
FO-2970MU NO.
PAGE 94
FO-2970MU [9] Fusing unit 18 11 B2 17 18 4 2 901 13 15 9 4 B5 15 7 18 12 B7 6 10 14 16 W1 B6 3 1 B1 B4 B3 5 8 B1 NO.
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FO-2970MU [10] Packing material & Accessories 6 7 1 18 2 15 16 14 4 8 9 AC Cord 17 5 10 19 3 11 12 13 Fro nt NO.
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FO-2970MU NO.
PAGE 97
FO-2970MU NO.
PAGE 98
FO-2970MU NO.
PAGE 99
FO-2970MU NO.
PAGE 100
FO-2970MU NO.
PAGE 101
FO-2970MU NO.
PAGE 102
FO-2970MU NO.
PAGE 103
FO-2970MU NO.
PAGE 104
FO-2970MU NO.
PAGE 105
FO-2970MU NO.
PAGE 106
FO-2970MU NO.
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FO-2970MU PARTS CODE NO.
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FO-2970MU Index PARTS CODE [C] CCASP2121SC08 CCNW-270ASC01 CFRM-2214SC51 CHLDZ0040PS73 CPLTP0274PS51 CPLTP3084SC02 CPLTP3085SC02 CPLTP3088SC02 [D] DCEK-224CSC01 ″ DCEKC182PSCZZ ″ DCEKL259CSC01 ″ DCEKP223CSC01 ″ DHAI-0139GCZZ DUNT-205CSCZA DUNTK0152PSZZ DUNTK369BSCOG DUNTW221CSC01 [G] GCABA2350SCZA GCABB2351SCZA GCABC2352SCZA GCABD2353SCYA GCASP2121SCZG GCOVA2418SCZA GDAI-2074XHZZ GDAI-2075XHZZ GLEGG2075SCZZ [H] HPNLH2398SCZZ [J] JBTN-2282SCZA JBTN-2283SCZA JBTN-2284SCZZ JBTN-2285SCZA JBTN-2286SCZA JBTN-228
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FO-2970MU PRICE NEW PART RANK MARK RANK PARTS CODE No.
PAGE 110
FO-2970MU PARTS CODE No.
PAGE 111
FO-2970MU PARTS CODE No.
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FO-2970MU PRICE NEW PART RANK MARK RANK PARTS CODE No.
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FO-2970MU CAUTION FOR BATTERY REPLACEMENT (Danish) ADVARSEL ! Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandoren. (English) Caution ! Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the equipment manufacturer. Discard used batteries according to manufacturer’s instructions.
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FO-2970MU COPYRIGHT © 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. SHARP CORPORATION Communication Systems Group Quality & Reliability Control Center Higashihiroshima, Hiroshima 739-0192, Japan Printed in U.S.A.