Ricoh FAX680MP Service Manual
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Ricoh FAX680MP Service Manual

Ricoh FAX680MP Service Manual

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IF2
RICOH FAX680MP
SERVICE MANUAL
31 March, 1997
Subject to change.

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Summary of Contents for Ricoh FAX680MP

  • Page 1 RICOH FAX680MP SERVICE MANUAL 31 March, 1997 Subject to change.
  • Page 2 CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance with the manufacturer's instructions. CAUTION: 1) Before attempting any of disassembly or assembly procedure, make sure of the following: •...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. OVERALL MACHINE INFORMATION ..........1-1 1.1 SPECIFICATIONS..................1-1 1.2 FEATURES....................1-2 1.2.1 FAX FEATURES................1-2 1.2.2 PC INTERFACE FEATURES ............1-3 1.2.3 SERVICE MODE FEATURES ............1-3 1.3 COMPONENT LAYOUT................1-4 1.4 OVERALL MACHINE CONTROL.............. 1-6 1.5 DATA PATH....................1-7 1.6 POWER DISTRIBUTION................
  • Page 4 4.2.3 BIT SWITCH PROGRAMMING (FUNCTION 81)......4-2 4.2.4 SYSTEM REPORT (FUNCTION 82)..........4-3 4.2.5 RAM REWRITE (FUNCTION 83)............. 4-4 4.2.6 NCU PARAMETERS (FUNCTION 86) ..........4-4 4.2.7 PRINT TEST (FUNCTION 87)............4-5 4.2.8 PRINT HEAD POSITION ADJUSTMENT (FUNCTION 88) ....4-5 4.2.9 ERROR CODE DISPLAY (FUNCTION 89) .

  • Page 5: Overall Machine Information

    (ITU-T #1 Chart, MR compression, TTI off) 46 ± 4 s (Direct rx) T.30 Protocol Important: Non-standard signals, NSF and NSS, are not compatible with existing Ricoh fax machines. Coding Scheme MH, MR 9600/7200/4800/2400 bps Modem Speed V.29 (QAM), V27ter (PHM), V.21 (FM)

  • Page 6: Features

    FEATURES 31 March, 1997 1.2 FEATURES Please refer to the Operator’s Manual for the available user features and their details. The following table explains the chief differences from the existing ink-jet fax, model IFO. 1.2.1 FAX FEATURES FEATURES (THIS MODEL) (EXISTING MODEL) Authorized reception...

  • Page 7: Pc Interface Features

    31 March, 1997 FEATURES 1.2.2 PC INTERFACE FEATURES PC INTERFACE FEATURES (THIS MODEL) (EXISTING MODEL) Parallel interface Bi-Centronics Centronics Printer Emulation HP PCL3 and IBM BJ and LQ PPDS Serial interface RS232C RS232C (9 pins) (25 pins) PC fax specification Standard Optional (EIA Class 1)

  • Page 8: Component Layout

    COMPONENT LAYOUT 31 March, 1997 1.3 COMPONENT LAYOUT H905V001.cdr H905V002.cdr...
  • Page 9 31 March, 1997 COMPONENT LAYOUT Description Function Tx Motor Drives the document feed mechanism. CIS (Contact Image Scans the document. Sensor) Paper End Sensor Detects paper in the cassette. (SB4) Document Sensor Detects when a document is placed in the document (SB1) feeder.

  • Page 10: Overall Machine Control

    OVERALL MACHINE CONTROL 31 March, 1997 1.4 OVERALL MACHINE CONTROL FAX ROM DRAM DRAM SRAM (128 kB) (512 kB) (1 MB) (8 kB) ADDRESS/DATA BUS Driver Tx Motor TC35167F Driver Speaker Carriage Serial Driver Motor Interface Buffer (DSUB 9 pin) Maintenance PCIF Driver...

  • Page 11: Data Path

    31 March, 1997 DATA PATH 1.5 DATA PATH Fax Tx ECM/L.B. TC35167F Fax Rx ECM/L.B. TC35167F Printer FOX2 Engine PC-Fax Tx/Rx L.B. Serial TC35167F Printer Centronics FOX2/M68000 Printer Engine Copy TC35167F Printer FOX2 Engine H905V012.VSD...

  • Page 12: Power Distribution

    POWER DISTRIBUTION 31 March, 1997 1.6 POWER DISTRIBUTION Tx Motor +24V +5V -12V +24V +12V - 12V +24V +24V DC/DC Inkjet Head Carriage Maintenance Rx Motor Motor Motor H905V011.VSD...

  • Page 13: Detailed Descriptions

    31 March, 1997 SCANNER 2. DETAILED DESCRIPTIONS 2.1 SCANNER 2.1.1 DOCUMENT FEED MECHANISM H905D001.cdr The feed roller [A] feeds the document into scanner, and the separation pad [B] prevents more than one sheet of the document from feeding. When the document reaches the scan line, the Tx motor stops until the machine is ready for scanning.

  • Page 14: Printer

    PRINTER 31 March, 1997 2.2 PRINTER 2.2.1 PAPER FEED MECHANISM H905D002.cdr H905D003.cdr The Rx motor [A] in the printer engine drives all the paper feed components. At the start of printing, the Rx motor rotates clockwise to move the gear arm [B] to drive the paper feed roller [C].

  • Page 15: Carriage Drive Mechanism

    31 March, 1997 PRINTER 2.2.2 CARRIAGE DRIVE MECHANISM H905d005.cdr H905d004.cdr The carriage drive motor [A] drives the print head carriage [B] through the belt [C]. The sensor [D], located under the carriage generates a pulse signal while it moves along the encoder [E] (a thin metal plate with many slits), so that the printer engine can detect the horizontal location of the carriage.

  • Page 16: Ink Low Condition

    PRINTER 31 March, 1997 2.2.5 INK LOW CONDITION The machine does not have an ink end detection mechanism, but it can detect an “ink low” condition. The printer engine counts the number of ink drops to calculate the cartridge replacement timing. When the machine determines that approximately 85% of the ink has been used, the machine displays the “INK LOW”...

  • Page 17: Printing Faxes At 300 Dpi Resolution

    31 March, 1997 PRINTER 2.2.6 PRINTING FAXES AT 300 DPI RESOLUTION Horizontal: AND Vertical:OR Horizontal: AND Horizontal: OR Vertical:AND Vertical:OR 300 dpi 1/8 mm Line Pairs Line Pairs Horizontal Direction Process : Generated Black Dot Horizontal: OR Vertical:AND H905D010.vsd To print received fax data in 300 x 300 dpi resolution, the machine converts the resolution as shown in the diagram.

  • Page 18: Protocol Reference

    PC INTERFACES 31 March, 1997 2.2.7 PROTOCOL REFERENCE DIRECT RECEPTION IN LOW MEMORY CONDITIONS When the machine detects an incoming fax call while in the following conditions, the machine receives the fax in direct reception mode (the data goes straight to the printer without storage in memory).
  • Page 19 31 March, 1997 PC INTERFACES Character Sets PCL3 Emulation Mode ECMA94, PC8, PC8 Danish Norwegian, PC 850, Roman 8, HP Legal, ISO2 IRV, ISO4 UK, ISO6 ASCII, ISO10 Swedish, ISO11 Swedish Names, ISO14 JIS ASCII, ISO15 Italian, ISO16 Portuguese, ISO17 Spanish, ISO21 German, ISO60 Norwegian 1, ISO61 Norwegian 2, and ISO69 French PPDS...

  • Page 20: Pc Fax Modem: Rs232C Serial Interface

    PC INTERFACES 31 March, 1997 2.3.2 PC FAX MODEM: RS232C SERIAL INTERFACE The machine can function as an EIA Class 1 fax modem, using the built-in serial interface (D-SUB 9 pins). Refer to the Operator’s Manual for how to install and set up the machine as a fax modem.
  • Page 21 31 March, 1997 PC INTERFACES RING DETECTION For reception, the settings of “number of rings to answer” parameters of the machine and the fax application determine which one receives a call. While the PC-FAX function is enabled (Function 47), the machine waits 3 additional rings after the number of rings programmed with NCU parameter “RID4"...

  • Page 22: Pcbs

    PCBs 31 March, 1997 2.4 PCBs 2.4.1 FCU H905D008.BMP 2-10...

  • Page 23: Ncu

    31 March, 1997 PCBs TC35167F FAX ENGINE 1) 8-bit MPU • Memory management • DMA control • Interrupt control • Serial interface control • Tx motor control • Real time clock (battery backed-up) 2) Modem (V.29, V27ter, and V.21) • Tone/DTMF detection •...

  • Page 24: Installation Procedure

    31 March, 1997 PRECAUTIONS 3. INSTALLATION PROCEDURE 3.1 PRECAUTIONS 1) Never install telephone wiring during a lightening storm. 2) Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. 3) Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

  • Page 25: Service Tables

    31 March, 1997 USER MODE 4. SERVICE TABLES 4.1 USER MODE FUNCTION TABLE Function No. Function Polling Transmission & Reception Send Later Programming Quick Dial and Speed Dial Programming Group Dial Programming ID Code Programming Password Programming RTI Programming TTI Programming CSI TCR Printing User Parameter List Printing...

  • Page 26: Service Mode

    SERVICE MODE 31 March, 1997 4.2 SERVICE MODE 4.2.1 HOW TO ACCESS THE SERVICE FUNCTIONS To access the service functions (functions 80 through 91), press [1], [2], [3] simultaneously. FUNCTION TABLE Function Number Function Feeding Count Display Bit Switch System Report Memory Write Not used Nation Selection...

  • Page 27: System Report (Function 82)

    1. Press the Function key, [8], [2], then the Yes key. The machine returns to standby after the report is printed. <CSI> SYSTEM PARAMETER LIST (07 APR '97 14:25) : IDENTIFICATION: RICOH FAX RTI: CSI: TTI: ID NUMBERS ID CODE: 0000...

  • Page 28: Ram Rewrite (Function 83)

    SERVICE MODE 31 March, 1997 4.2.5 RAM REWRITE (FUNCTION 83) 1. Press the Function key, [8], [3]. 2. Select a RAM address using the following ADDRESS 0000=02 keys: [*] - Increment the value at the cursor [#] - Decrement the value at the cursor [c] - Move the cursor 3.

  • Page 29: Print Test (Function 87)

    31 March, 1997 SERVICE MODE 4.2.7 PRINT TEST (FUNCTION 87) 1. Press the Function key, [8], [7]. 2. Select a test from the following: PRT TEST 1 2 3 4 1) Mixed patterns chart 2) 5% black chart 3) Oblique lines chart 4) ASF (Automatic Sheet Feeder) Test 3.

  • Page 30: Pcl3 Font List (Function 91)

    SERVICE MODE 31 March, 1997 4.2.11 PCL3 FONT LIST (FUNCTION 91) 1. Press the Function key, [9], [1], then the TEST PRINT ··· Yes key. The machine prints the printer font list. 2. Press the Stop key to finish printing and to return to standby.
  • Page 31 31 March, 1997 SERVICE MODE LEVEL 2 (Factory Reset) OPERATION 1. Enter the service mode, then use function 81. 2. Change the following bit switches in order. When the Function key is pressed after the last switch is changed to 1, the machine automatically initializes. •...

  • Page 32: Bit Switches

    BIT SWITCHES 31 March, 1997 4.3 BIT SWITCHES BIT SWITCH 0 Function Comments ADF test mode Change this bit to 1 to test the ADF mechanism. Always reset this switch to 0 (zero) after the test. 0: Disabled 1: Enabled To start the test, place a document in the ADF and press the Start key.
  • Page 33 31 March, 1997 BIT SWITCHES BIT SWITCH 1 Function Comments Default resolution Same as the Function 47 (Resolution) setting. setting This bit determines the default resolution setting. 0: Standard 1: Fine Date format Changes the date format as shown. 0: Day/Month/Year 1: Month/Day/Year Default scan density setting Same as the Function 47 (Density) setting.
  • Page 34 BIT SWITCHES 31 March, 1997 BIT SWITCH 2 Function Comments Initial Tx modem rate          =  =  =  =           ...
  • Page 35 31 March, 1997 BIT SWITCHES BIT SWITCH 3 Function Comments NSF(S) transmission Do not change the factory setting. 0: Enabled 1: Disabled NSF(RTI) transmission Do not change the factory setting. 0: Enabled 1: Disabled CSI transmission Do not change the factory setting. 0: Enabled 1: Disabled System initialization...
  • Page 36 BIT SWITCHES 31 March, 1997 BIT SWITCH 4 Function Comments Not used RTI and CSI 1: Function 24 (RTI) and 26 (CSI) are not accessible. programming function When Czech Rep. or Hungary is selected, this bit is automatically set to “1”, so that the users cannot 0: Enabled program the RTI and CSI by themselves (PTT 1: Disabled...
  • Page 37 31 March, 1997 BIT SWITCHES BIT SWITCH 5 Function Comments Modem types to be The setting is mapped to the NSF/DIS frame. notified to the transmitting terminal 0: V29 & V27ter 1: V27ter Paper length notified to The setting is mapped to the NSF/DIS frame. the transmitting terminal 0: Unlimited 1: A4...
  • Page 38 BIT SWITCHES 31 March, 1997 BIT SWITCH 6 Function Comments Not used Do not change the factory settings. Limit Rx Same as the Function 47 (Limit Rx) setting. 0: Disabled If enabled, the machine does the following: 1: Enabled NSF/NSS mode: Checks whether the ID codes at both ends are identical or not.
  • Page 39 31 March, 1997 BIT SWITCHES BIT SWITCH 8 Function Comments Tx cable equalizer          =  =  =  =     Disabled       ...
  • Page 40 BIT SWITCHES 31 March, 1997 BIT SWITCH 9 Function Comments Dial tone detection This function is only available in the following countries: 0: Disabled Austria, Belgium, Denmark, France, Ireland, Netherlands, Norway, Portugal, Spain, Sweden, and 1: Enabled Switzerland Busy tone detection This function is only available in the following countries: 0: Disabled France, Netherlands, Norway, Spain, and Switzerland...
  • Page 41 31 March, 1997 BIT SWITCHES BIT SWITCH A Function Comments White threshold level The greater the threshold, the darker the scanned image. Adjustable range: 6 to C Notes 1. Do not set a value outside this range. 2. The settings of the white threshold (bits 0 to 3) and black threshold (bits 4 to 7) must be the same.
  • Page 42 BIT SWITCHES 31 March, 1997 BIT SWITCH C Function Comments Ink save mode 0: All dots are printed. 0: 1/4 save mode 1: Print data is filtered using the following pattern. (White dots are not printed.) 1: No save mode The default setting is “1”.
  • Page 43 31 March, 1997 BIT SWITCHES Function Comments Horizontal direction Refer to section 2.2.6. 0: OR 1: AND Vertical direction Refer to section 2.2.6. 0: OR 1: AND Not used BIT SWITCH D Function Comments PC I/F startup baud rate  ...
  • Page 44 BIT SWITCHES 31 March, 1997 Function Comments ECM in reception Same as the function 47 (ECM) setting. 0: Enabled 1: Disabled 4-20...

  • Page 45: Ncu Parameters

    31 March, 1997 NCU PARAMETERS 4.4 NCU PARAMETERS Name Function & Meaning Formula Remarks After selecting a country, all the following parameters are reset to the country’s defaults. LEVL Tx signal level from the modem. ≤ ≤ Range: 0 to -15 dBm - N dBm RID0 Acceptable ringing signal detection 1000...
  • Page 46 NCU PARAMETERS 31 March, 1997 NCU PARAMETER SETTINGS Country LEVL RID0 RID1 RID2 RID3 RID4 RDT0 RDT1 DLST RPST Austria Belgium Denmark Finland France Germany Ireland Italy Netherlands Norway Spain Sweden Switzerland U.K. Greece Portugal Czech Rep. Hungary Israel Poland Russia Country MAKT...

  • Page 47: Ram Definitions

    31 March, 1997 RAM DEFINITIONS 4.5 RAM DEFINITIONS NOTE: Do not change RAM data other than listed in this table. Address (H) Definitions Note 0902 - 0905 Fax ROM version Read only If the ROM version is 2.11: 0902 - 32 (ASCII) 0903 - 2E (ASCII) 0904 - 31 (ASCII) 0905 - 31 (ASCII)
  • Page 48 RAM DEFINITIONS 31 March, 1997 Address (H) Definitions Note E035 - E048 Even if the RTI is not 20 characters E035 - 1 character (ASCII) long, RTI E036 - 2 character (ASCII) characters are stored from E048 - 20 character (ASCII) E035(h), and FF(h) is stored in addresses after the...
  • Page 49 31 March, 1997 RAM DEFINITIONS Address (H) Definitions Note E094 - E3B3 Stored dial numbers for Speed Dials 10 - 59. Addresses are fixed as follows: Each stored number consists of 16 bytes as follows: E094 - E0A3: S.10 E0A4 - E0B3: S.11 byte - Flag E0B4 - E0C3: S.12 Bit 0: 1 = Registered in Group A...
  • Page 50 RAM DEFINITIONS 31 March, 1997 Address (H) Definitions Note E558 - E55A Total Tx counter (same format as the “Total scan counter) E55B - E55D Total Rx counter (same format as the “Total scan counter) E9C9 - E9CA The latest error code detected in the last fax Do not change the reception.
  • Page 51 31 March, 1997 RAM DEFINITIONS Address (H) Definitions Note EA33 - EA48 NCU parameters Refer to section 4.4 for definitions. EA33: COUNTRY (See note) Country Codes EA34: LEVL (Hex) 00(h): Austria EA35: RID0 (Hex) 01(h): Belgium EA36: RID1 (Hex) 03(h): Denmark EA37: RID2 (Hex) 04(h): Finland EA38: RID3 (Hex)

  • Page 52: Preventive Maintenance

    31 March, 1997 PREVENTIVE MAINTENANCE SCHEDULE 5. PREVENTIVE MAINTENANCE 5.1 PREVENTIVE MAINTENANCE SCHEDULE 5.1.1 PM TABLE Symbol Keys: C: Clean, R: Replace, L: Lubricate, I: Inspect Item Note Scanner/ADF Document Sensor Roller Bushings Separation Pad Alcohol Adjust the separation pressure, if required. Feed Roller Alcohol CIS Roller...

  • Page 53: Replacement And Adjustment

    31 March, 1997 EXTERIOR 6. REPLACEMENT AND ADJUSTMENT CAUTION The danger of explosion exists if a battery of this type is incorrectly replaced. Replace only with the same or an equivalent type recommended by the manufacturer. Discard used batteries in accordance with the manufacturer’s instructions.

  • Page 54: Exterior

    EXTERIOR 31 March, 1997 6.1 EXTERIOR 6.1.1 TOP COVER ASSEMBLY H905R501.cdr — TOP COVER AND ADF UPPER GUIDE PLATE — 1. Open the top cover [A]. 2. Remove the ADF upper guide plate [B] (1 tapping screw [left] and 2 screws; 1 harness) and the part [C] (1 tapping screw).
  • Page 55 31 March, 1997 EXTERIOR — ADF SENSOR ASSEMBLY AND SEPARATION PAD — 4 notches H905R503.cdr H905R505.cdr 1. Remove the ADF upper guide plate as explained in the previous section. 2. Slide out the separation pad assembly [A]. 3. If required, adjust the separation pressure using the black pin [B] as shown. The illustration shows the default setting.
  • Page 56 EXTERIOR 31 March, 1997 — INNER COVER — H905R506.cdr H905R507.cdr H905R508.cdr 1. Remove the document guide assembly [A] as shown. 2. Remove the top cover assembly if it has not been removed (see section 1.1.1). 3. Gently slide the print head carriage [B] to the left end, remove the cable supporter [C], and release the flat cables [D] from the hooks.

  • Page 57: Rear Cover

    31 March, 1997 EXTERIOR 6.1.2 REAR COVER H905R509.cdr 1. Remove the rear cover [A] (3 screws; the screw at the lower right corner is long. The others are short.)

  • Page 58: Pcbs

    PCBs 31 March, 1997 6.2 PCBS 6.2.1 FCU AND NCU H905R510.cdr H905R511.cdr 1. Open the top cover, gently slide the print head carriage [A] to the left end, remove the cable supporter [B], and release the flat cables [C] from the hooks (refer to section 1.2).
  • Page 59 31 March, 1997 PCBs Connector Locations and Connections Print PCIF PCIF Head Carriage CN15 CN10 JP24 Paper End Sensor LINE Operation Panel Tx Motor Maintenance CN14 Motor Speaker CN11 CN13 CN12 Rx Motor Carriage Motor Battery Switch H905R012.vsd...

  • Page 60: Psu And Pcif

    PCBs 31 March, 1997 6.2.2 PSU AND PCIF H905R513.cdr 1. Remove the rear cover (see section 1.3). 2. Remove the bottom cover assembly with the FCU and the NCU (see section 2.1). If possible, instead of doing this, disconnect the harnesses from CN1, CN9, and CN15.

  • Page 61: Scanner And Paper Cassette

    31 March, 1997 SCANNER AND PAPER CASSETTE 6.3 SCANNER AND PAPER CASSETTE 6.3.1 MAINTENANCE — CLEANING THE SCANNER ROLLERS — Clean the CIS roller surface using alcohol whenever possible. If the roller gets dirty, the scanned image may be partially darker. H905R515.cdr 1.

  • Page 62: Scanner And Paper Cassette Assembly

    SCANNER AND PAPER CASSETTE 31 March, 1997 6.3.2 SCANNER AND PAPER CASSETTE ASSEMBLY H905R516.cdr 1. Remove the top cover assembly (see section 1.1), the inner cover (see section 1.2), and the rear cover (see section 1.3). 2. Remove the bottom cover assembly with the FCU and the NCU (see section 2.1).
  • Page 63 31 March, 1997 SCANNER AND PAPER CASSETTE — CONTACT IMAGE SENSOR (CIS) AND PAPER END SENSOR — NOTE: The CIS and the paper end sensor are not available separately as spare parts. Use this procedure only when the CIS or the paper end sensor has been removed from the machine.
  • Page 64 SCANNER AND PAPER CASSETTE 31 March, 1997 — TX MOTOR — H905R518.cdr 1. Remove the scanner and paper cassette assembly (see section 3.1). 2. Remove the Tx motor [A] (2 screws). — CIS ASSEMBLY, CIS ROLLER AND PAPER CASSETTE — H905R519.cdr 1.

  • Page 65: Printer Engine

    31 March, 1997 PRINTER ENGINE 6.4 PRINTER ENGINE 6.4.1 MAINTENANCE NOTE: 1) Do the following maintenance whenever possible. 2) Follow the instructions step by step. Otherwise the printer engine may malfunction. H906R520.cdr — CARRIAGE SHAFT AND ENCODER — 1. Remove the top cover assembly (see section 1.1) and the inner cover (see section 1.2).
  • Page 66 PRINTER ENGINE 31 March, 1997 H905R523.cdr H905R524.cdr 4. Remove the encoder [F]. 5. Put the encoder on a sheet of paper and drop alcohol all along it. NOTE: 1) Do not wipe the encoder using cloth. If the slots on the encoder are clogged with dust, the carriage may not move correctly.
  • Page 67 31 March, 1997 PRINTER ENGINE H905R525.cdr 8. Insert the shaft [A] into the opening in the carriage. 9. Insert the right end of the shaft into the opening [G] in the right frame, then insert the left end into the opening [H] in the left frame. Do not lock them yet. 10.
  • Page 68 PRINTER ENGINE 31 March, 1997 — MAINTENANCE UNIT — H905R527.cdr 1. Open the top cover and move the carriage to the left. 2. Clean the maintenance unit [A] with drops of alcohol. 6-16...

  • Page 69: Replacement

    31 March, 1997 PRINTER ENGINE 6.4.2 REPLACEMENT — PRINTER ENGINE ASSEMBLY — H905R526.cdr 1. Remove the top cover assembly (see section 1.1), the inner cover (see section 1.2), and the rear cover (see section 1.3). 2. Remove the bottom cover assembly with the FCU and the NCU (see section 2.1).
  • Page 70 PRINTER ENGINE 31 March, 1997 — RX MOTOR — H905R530.cdr 1. Remove the printer engine assembly as explained in section 6.4.2. 2. Remove the Rx motor [A] (2 tapping screws; 1 harness binder). — CARRIAGE DRIVE MOTOR — H905R531.cdr 1. Remove the printer engine assembly as explained in section 6.4.2. 2.
  • Page 71 31 March, 1997 PRINTER ENGINE 4. Remove the carriage drive motor [B] (2 screws). 6-19...
  • Page 72 PRINTER ENGINE 31 March, 1997 — PAPER FEED ROLLER RELEASE LEVER — H905R532.cdr 1. Remove the printer engine assembly as explained in section 6.4.2. 2. Move the release lever [A] as shown to remove the lever (1 hook). — MAINTENANCE UNIT — H905R534.cdr H905R533.cdr 1.
  • Page 73 31 March, 1997 PRINTER ENGINE H905R535.cdr 4. Remove the maintenance motor assembly [C] and the maintenance unit [D] (both hooked on the bottom frame). NOTE: Do not touch the wiper blade [E] of the maintenance unit. This may damage the printer head. 5.

  • Page 74: Troubleshooting

    31 March, 1997 TROUBLESHOOTNG PROCEDURE 7. TROUBLESHOOTING 7.1 TROUBLESHOOTNG PROCEDURE 7.1.1 COPY TEST Copy test SET DOCUMENT "QUICK: KEYPAD" "DIAL KEYPAD" Check SB1, SB2 Press START/COPY twice then copying starts Normal? Replace SB1, SB2 Document exits without scanning Check SB1, SB2 wiring Normal? Replace OPU (PCB) Printing paper exits...

  • Page 75: Ink Nozzle Test

    INK NOZZLE TEST 31 March, 1997 7.2 INK NOZZLE TEST Ink Nozzle Test Function 52 'Ink nozzle test' in LCD: waiting for test pattern printout Check for blocked nozzles by looking at test pattern Blocked nozzle? Nozzle test OK First Test? Better than before? New ink cartridge? Check flat cable is set...

  • Page 76: Transmission Test

    31 March, 1997 TRANSMISSION TEST 7.3 TRANSMISSION TEST Transmission Test Press 'On Hook' key Dial Tone? Volume adjusted to min Adjust volume Test again Set document into feeder Check telephone line NCU relay switches Check NCU 'DIAL KEYPAD' Check pin 16 of CN7 (RY 10N) when 'On-Hook' button pressed QUICK: KEYPAD Copy test...

  • Page 77: Power On Initialization Test

    POWER ON INITIALIZATION TEST 31 March, 1997 7.4 POWER ON INITIALIZATION TEST Power on test Turn on power Display LCD? LCD display error Good Wait until print module intializes (about 10 s) READY 99% 12:00 Ink Nozzle test Copy test Transmission test Reception test PRINT MODULE...

  • Page 78: Lcd Display Error

    31 March, 1997 LCD DISPLAY ERROR 7.5 LCD DISPLAY ERROR LCD display error No change in LCD Blank characters (as if no power) Check FCU-PSU harness Check FCU-OPU harness Check FCU-OPU harness Abnormal characters Fixed ? Fixed ? in LCD Replace FCU-OPU harness Check PSU output Disconnect FCU-OPU harness...

  • Page 79: Reception Test

    RECEPTION TEST 31 March, 1997 7.6 RECEPTION TEST Reception test Select FAX Mode Call from another fax Check telephone line Auto receive Check NCU Check FCU-NCU harness Test end Transmission test Change defective parts Test again H905T006.vsd...

  • Page 80: Print Module Error

    31 March, 1997 PRINT MODULE ERROR 7.7 PRINT MODULE ERROR Print Module err LCD display is 'CHECK PRT MODULE' or 'CHECK INK HEAD' Maintenance Carriage motor 'CHECK INK HEAD' motor not working works abnormally when power on self test Remove hardened ink 1.

  • Page 81: Error Codes

    ERROR CODES 31 March, 1997 7.8 ERROR CODES CODE MEANING ACTION • 0-00 DIS/NSF not received. Check the line connection. • Check the NCU-FCU connection. • The machine at the other end may be incompatible. • Replace the NCU or FCU. •...
  • Page 82 31 March, 1997 ERROR CODES CODE MEANING ACTION • 0-20 The machine could not Check the line condition. • receive at least 1 line Check the NCU-FCU connection. after starting image • Check for line problems. data reception. • The other end may be incompatible. •...
  • Page 83 ERROR CODES 31 March, 1997 CODE MEANING ACTION • 1-34 No paper after printing Add paper. • is completed. If the problem is present after adding paper, replace the paper end sensor or FCU. • 1-50 Print module error Reset the print module using the “RESET” during reception.
  • Page 84 Symbol Table Point-to-Point Diagram AC Line DC Line Model: IF2 Issued on: March 31, 1997 Signal Direction Revision 1.0 Active High Subject to change Active Low Voltage NZ53 CN1 - Centronics Interface NZ51 STROBE COM1 _SLCTIN NZ33 DATA0 COM1 _AUTOFD NZ39 DATA1 COM1...

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