Kyocera PF-740 Service Manual
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Kyocera PF-740 Service Manual

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PF-740
SERVICE
MANUAL
Published in April 2011
843NF111
3NFSM061
Rev.1

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Summary of Contents for Kyocera PF-740

  • Page 1 PF-740 SERVICE MANUAL Published in April 2011 843NF111 3NFSM061 Rev.1...
  • Page 2 CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.
  • Page 3 Revision history Revision Date Replaced pages Remarks 6 April 2011 CONTENTS, 2-4-1 to 2-4-3...
  • Page 4 This page is intentionally left blank.

  • Page 5: Safety Precautions

    Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
  • Page 6 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
  • Page 7 1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current...................... •...

  • Page 8: Specifications 1

    2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
  • Page 9 • Do not remove the ozone filter, if any, from the copier except for routine replacement....... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself......................•...
  • Page 10 This page is intentionally left blank.

  • Page 11: Table Of Contents

    3NF-1 CONTENTS 1-1 Specifications 1-1-1 Specifications ........................1-1-1 1-1-2 Parts names .......................... 1-1-2 1-1-3 Machine cross section ......................1-1-3 1-2 Installation 1-2-1 Installation environment......................1-2-1 1-2-2 Unpacking..........................1-2-2 (1) Precaution for unpacking....................1-2-2 1-2-3 Unpacking..........................1-2-3 (1) Unpacking......................... 1-2-3 (2) Remove the tapes and pad ....................1-2-4 1-2-4 Installing the cassette heater (Option) ...................
  • Page 12 3NF-1 2-1 Mechanical Construction 2-1-1 Paper feed section......................... 2-1-1 (1) Right cassette section ...................... 2-1-1 (2) Left cassette section......................2-1-2 (3) Right cassette paper feed....................2-1-3 (4) Left cassette paper feed ....................2-1-5 2-2 Electrical Parts Layout 2-2-1 Electrical parts layout ......................2-2-1 (1) PWB and sensors......................

  • Page 13: Specifications

    1-1 Specifications 1-1-1 Specifications Item Specifications Paper weight 60 to 256g/m Paper types Plain (80g/m or less), Thick (256g/m or less), recycled Paper size A4, B5,Letter Paper capacity 3000 sheets (1,500 sheets x 2) (80g/m 598 (W) x 315 (H) x 706.6 (D) mm Dimensions ”...

  • Page 14: Parts Names

    1-1-2 Parts names Figure 1-1-1 1. Cassette 4 4. PF paper conveying cover 2. Cassette 3 3. Lift plate 1-1-2...

  • Page 15: Machine Cross Section

    1-1-3 Machine cross section Paper path Figure 1-1-2 1-1-3...
  • Page 16 This page is intentionally left blank. 1-1-4...

  • Page 17: Installation Environment

    1-2 Installation 1-2-1 Installation environment Installation location (Be based on the machine establishment place.) Avoid direct sunlight or bright lighting. Ensure that the photo conductor will not be exposed to direct sunlight or other strong light when removing paper jams. Avoid locations subject to high temperature and high humidity or low temperature and low humidity;...

  • Page 18: Unpacking

    1-2-2 Unpacking (1) Precaution for unpacking Hold the positions shown in the figure and remove the paper feeder from the outer case. Figure 1-2-1 1-2-2...

  • Page 19: Unpacking

    1-2-3 Unpacking (1) Unpacking 18 19 20 22 23 24 Figure 1-2-2 Unpacking 21. Plastic bag 1. Paper feeder 11. Installation guide 2. Outer case 12. Accessory box 22. S tight screws M4 x 8B 3. Inner case 13. Plastic bag 23.

  • Page 20: Remove The Tapes And Pad

    (2) Remove the tapes and pad Procedure 1. Remove nine tapes. Tapes Tapes Figure 1-2-3 2. Remove six tapes and then remove the Retainer retainer and the leaflet. Leaflet Tapes Tapes Figure 1-2-4 1-2-4...
  • Page 21 3. Pull the right cassette. 4. Remove the tape. Tape Right cassette Figure 1-2-5 5. Remove the lift plate stopper from cassette and attach it to the storage Lift plate location. stopper * : When moving the machine,attach the lift plate in original position. 6.

  • Page 22: Installing The Cassette Heater (Option)

    1-2-4 Installing the cassette heater (Option) Procedure 1. Pull the right cassette forward. 2. Remove four screws and then remove Right cassette the right cassette. Screw Screw Screw Screw Figure 1-2-7 3. Pull the left cassette forward. Left cassette 4. Remove four screws and then remove the left cassette.
  • Page 23 5. Install three wire saddles on the bottom frame of the paper feeder. Wire saddle 6. Install the cassette heater by using two Wire saddle Wire saddle screws. Screw Screw Cassette heater Figure 1-2-9 1-2-7...
  • Page 24 7. Connect the connector of the cassette heater to the connector in the rear frame of the paper feeder. 8. Pass through the wire of the cassette heater to three wire saddles. Wire saddles Wire saddle Connector Cassette heater Figure 1-2-10 9.
  • Page 25 11. Adhere the high temperature caution label after wiping the bottom frame of this side of cassette heater with alcohol. High temperature caution label Figure 1-2-12 1-2-9...
  • Page 26 This page is intentionally left blank. 1-2-10...

  • Page 27: Maintenance Mode

    1-3 Maintenance Mode 1-3-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Enter “10871087” using Maintenance mode is entered. the numeric keys. Enter the maintenance item The maintenance item is selected.

  • Page 28: Maintenance Modes Item List

    (2) Maintenance modes item list Section Item Content of maintenance item Initial setting General U000 Outputting an own-status report U001 Exiting the maintenance mode U019 Displaying the ROM version Drive, U034 Adjusting the print start timing paper feed LSU Out Top 0/0/0/0/0/0/0/0/0/0/0/0 and paper LSU Out Left...

  • Page 29: Contents Of The Maintenance Mode Items

    (3) Contents of the maintenance mode items Item No. Description U000 Outputting an own-status report Description Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences. Outputs the event log or service status page. Also sends output data to the USB memory.
  • Page 30 Item No. Description U000 Method: Send to the USB memory 1. Press the power key on the operation panel, and after verifying the main power indicator has gone off, switch off the main power switch. 2. Insert USB memory in USB memory slot. 3.
  • Page 31 Item No. Description U000 Event log Event Log 27/Oct/2010 08:40 Firmware version 2LC_2000.000.000 2010.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] (12) Paper Jam Log Counter Log Count. Event Descriprions J0000: J0041: C0000: T00: 9999999 0501.01.08.01.01 J0001: J0042: C0001: T01: 8888888 4002.01.08.01.01 J0002: J0043: C0002: T02:...
  • Page 32 Item No. Description U000 Detail of event log Items Description Controller BROM version Operation panel mask version Machine serial number Paper Jam Count. Event Remembers 1 to 16 of The total page count Log code (hexadeci- occurrence. If the occur- at the time of the mal, 5 categories) rence of the previous...
  • Page 33 Item No. Description U000 Items Description Paper Jam (d) Detail of paper type (Hexadecimal) cont. 01: Plain 0A: Color 15: Custom 1 02: Transparency 0B: Prepunched 16: Custom 2 03: Preprinted 0C: Envelope 17: Custom 3 04: Labels 0D: Cardstock 18: Custom 4 05: Bond 0E: Coated...
  • Page 34 Item No. Description U000 Items Description Service Call Count. Service Code Remembers 1 to 8 The total page Self diagnostic error code of occurrence of self count at the time of (See page 1-4-5) diagnostics error. If the self diagnostics the occurrence of error.
  • Page 35 Item No. Description U000 Items Description (12) Counter Log (f) Paper jam (g) Self diagnostic (h) Maintenance item error replacing Comprised of Indicates the log Indicates the log Indicates the log coun- three log coun- counter of paper counter of self diag- ter depending on the ters including jams depending on...
  • Page 36 Item No. Description U000 Service status page (1) Service Status Page 27/10/2010 12:00 Firmware version 2LC_2000.000.000 2010.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Controller Information Memory status (32) Total Size 2.0 GB FRPO Status Default Pattern Switch Time Default Font Number C5*1000+C2*100+C3 00000 Local Time Zone +01:00 Amsterdam Date and Time...
  • Page 37 Item No. Description U000 Service status page (2) Service Status Page 27/10/2010 12:00 Firmware version 2LC_2000.000.000 2010.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Engine Information Send Information (33) (37) NVRAM Version _1F31225_1F31225 Date and Time 10/10/27 (34) (38) Scanner Version 2LC_1200.001.089 Address (35) FAX Slot1 FAX BOOT Version 2LC_5000.001.001...
  • Page 38 Item No. Description U000 Detail of service status page Description Supplement Firmware version System date Engine soft version Engine boot version Operation panel mask version Machine serial number Total memory size Local time zone Report output date Day/Month/Year hour:minute (10) NTP server name (11) Presence or absence of the...
  • Page 39 Item No. Description U000 Description Supplement (27) Fax kit information This item is printed only when the fax kit is installed. (28) Number of rings 0 to 15 (29) Number of rings before auto- 0 to 15 matic switching (30) Number of rings before connect- 0 to 15 ing to answering machine...
  • Page 40 Item No. Description U000 Description Supplement (43) Life counter (The first line) Machine life/MP tray/Cassette 1/Cassette 2/ Cassette 3/Cassette 4/Duplex (44) Life counter (The second line) Drum unit K/Drum unit C/Drum unit M/Drum unit Y/ Transfer belt unit/Developer unit K/ Developer unit C/Developer unit M/ Developer unit Y/Maintenance kit A/ Maintenance kit B...
  • Page 41 Item No. Description U000 Description Supplement (59) Calibration information Black/Cyan/Magenta/Yellow (60) Calibration information (61) Calibration information (62) Calibration information (63) Calibration information (64) Calibration information (65) Calibration information (66) Calibration information (67) Calibration information (68) Calibration information (69) RFID information (70) RFID reader/writer version infor- mation...
  • Page 42 Item No. Description U019 Displaying the ROM version Description Displays the part number of the ROM fitted to each PWB. Purpose To check the part number or to decide, if the newest version of ROM is installed. Method 1. Press the start key. The ROM version are displayed. 2.
  • Page 43 Item No. Description U019 Display Description Side paper feeder / Side large capacity feeder ROM PF2 Boot Side paper feeder / Side large capacity feeder booting 1000-sheet finisher / 4000-sheet finisher ROM DF Boot 1000-sheet finisher / 4000-sheet finisher booting Punch unit ROM PH Boot Punch unit booting...
  • Page 44 Item No. Description U034 Adjusting the print start timing Description Adjusts the leading edge registration or center line. Purpose Make the adjustment if there is a regular error between the leading edges of the copy image and original. Make the adjustment if there is a regular error between the center lines of the copy image and original.
  • Page 45 Item No. Description U034 Adjustment: Leading edge registration adjustment 1. Press the system menu key. 2. Press the start key to output a test pattern. 3. Press the system menu key. 4. Select the item to be adjusted. [LSU Out Top] Setting Initial Change in...
  • Page 46 Item No. Description U034 [LSU Out Top B/W] [LSU Out Top 3/4] Setting Initial Change in Display Description range setting value per step MPT(L) Paper feed from MP tray -3.0 to 3.0 0.1 mm (when large size paper is used) Cassette(L) Paper feed from cassette -3.0 to 3.0...
  • Page 47 Item No. Description U034 Adjustment: Center line adjustment 1. Press the system menu key. 2. Press the start key to output a test pattern. 3. Press the system menu key. 4. Select the item to be adjusted. Setting Initial Change in Display Description range...
  • Page 48 Item No. Description U247 Setting the paper feed device Description Turns on motor and clutches of paper feeder device. Purpose To check the operation of motor and clutches of paper feed device. Method 1. Press the start key. 2. Select the paper feed device. Display Description Paper feeder...
  • Page 49 Item No. Description U247 Method: [LCF/Side LCF] 1. Press [Motor], [Clutch] or [Solenoid] and select the item. Display Description Motor PF paper feed motor (PFPFM) is turned off PF paper feed motor (PFPFM) is turned on Clutch PF paper conveying clutch 1 (PFPCCL1) is turned on PF paper conveying clutch 2 (PFPCCL2) is turned on V Feed PF paper conveying clutch 3 (PFPCCL3) is turned on...
  • Page 50 Item No. Description U247 Completion Press the stop key. The screen for selecting a maintenance item No. is displayed. U327 Setting the cassette heater control Description Sets the cassette heater control. Purpose To change the setting according to the machine installation environment. Setting 1.
  • Page 51 Item No. Description U341 Specific paper feed location setting for printing function Description Sets a paper feed location specified for printer output (only if a printer kit is installed). Purpose To use a paper feed location only for printer output. A paper feed location specified for printer output cannot be used for copy output.
  • Page 52 Item No. Description U901 Checking copy counts by paper feed locations Description Displays or clears paper feed counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the con- sumable parts.

  • Page 53: Paper Mis Feed Detection

    1-4 Troubleshooting 1-4-1 Paper mis feed detection (1) Paper mis feed indication When a paper mis feed occurs, the machine immediately stops printing and displays the paper mis feed mes- sage on the operation panel. To remove paper mis feed in the machine, pull out the cassette, open the paper conveying unit or paper conveying cover.
  • Page 54 Code Contents Conditions location* 0000 Initial jam The power is turned on when a sensor in the con- veying system is on. 0210 PF paper conveying cover The PF paper conveying cover is opened during open printing. 0523 No paper feed from cassette 3 PF feed sensor 1 (PFFS1) does not turn on dur- ing paper feed from cassette 3.
  • Page 55 Code Contents Conditions location* 2714 PF paper conveying sensor 2 PF paper conveying sensor 2 (PFPCS2) does not stay jam turn off during paper feed from cassette 4. 2717 PF paper conveying sensor 2 (PFPCS2) does not turn off during paper feed from cassette 7. 3106 PF paper conveying sensor 1 PF paper conveying sensor 1 (PFPCS1) does not...
  • Page 56 Code Contents Conditions location* 3706 SMT paper conveying sensor SMT paper conveying sensor 4 (SMTPCS4) does 4 non arrival jam not turn on during paper feed from cassette 6. 3707 SMT paper conveying sensor 4 (SMTPCS4) does not turn on during paper feed from cassette 7. 3716 SMT paper conveying sensor SMT paper conveying sensor 4 (SMTPCS4) does...

  • Page 57: Self-Diagnostic Function

    1-4-2 Self-diagnostic function (1) Self-diagnostic function This machine is equipped with self-diagnostic function. When a problem is detected, the machine stops print- ing and display an error message on the operation panel. An error message consists of a message prompting a contact to service personnel and a four-digit error code indicating the type of the error.
  • Page 58 Check procedures/ Code Contents Causes corrective measures 1040 PF lift motor 2 error Defective connec- Reinsert the connector. Also check for conti- After cassette 4 is inserted, tor cable or poor nuity within the connector cable. If none, PF lift sensor 2 does not turn contact in the con- replace the cable.
  • Page 59 Check procedures/ Code Contents Causes corrective measures 1900 Paper feeder EEPROM error Defective PF main Replace the PF main PWB and check for When writing the data, the PWB. correct operation (see page 1-5-9). write data and the read data is Device damage of Contact the Service Administrative Division.

  • Page 60: Electric Problems

    1-4-3 Electric problems If the part causing the problem was not supplied, use the unit including the part for replacement. Troubleshooting to each failure must be in the order of the numbered symptoms. Problem Causes Check procedures/corrective measures 1. Defective connector Reinsert the connector.
  • Page 61 Problem Causes Check procedures/corrective measures 1. Defective connector Reinsert the connector. Also check for continuity within the PF pickup sole- cable or poor con- connector cable. If none, replace the cable. noid 1, 2 does not tact in the connector. PF pickup solenoid 1 and PF main PWB (YC5) operate.

  • Page 62: Mechanical Problems

    1-4-4 Mechanical problems If the part causing the problem was not supplied, use the unit including the part for replacement. Problem Causes/check procedures Corrective measures Check if the surfaces of the following roll- Clean with isopropyl alcohol. No paper feed. ers are dirty with paper powder.

  • Page 63: Precautions For Assembly And Disassembly

    1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Before starting disassembly, press the Power key on the operation panel to off. Make sure that the Power lamp is off before turning off the main power switch. And then unplug the power cable from the wall outlet. When handling PWBs (printed wiring boards), do not touch parts with bare hands.

  • Page 64: Paper Feed Section

    1-5-2 Paper feed section (1) Detaching and refitting the PF forwarding, PF paper feed and PF separation pulleys (Right) Procedure 1. Open the PF paper conveying cover. 2. Remove the strap and then remove the PF paper conveying cover. Strap PF paper conveying cover PF paper conveying cover...
  • Page 65 4. Remove four screws and then remove the right cover. Screw Screws Screw Right cover Figure 1-5-3 5. Pull out the right cassette. 6. Remove the connector. Connector Figure 1-5-4 1-5-3...
  • Page 66 7. Remove each two fixed screws of the PF primary paper feed unit. PF primary 8. Remove the PF primary units. paper feed unit Screws PF primary paper feed unit Figure 1-5-5 1-5-4...
  • Page 67 PF paper feed 9. Remove the stop ring A and then pulley (Right) remove the one way clutch and PF One way paper feed pulley (Right). Feed gear clutch 10. Remove the stop ring B and then remove the PF forwarding pulley Stop ring A (Right).
  • Page 68 15. Refit the PF primary paper feed unit. *: To reassemble, press and hold the retard release lever at the bottom of the PF pri- mary feed unit. (see P.1-5-5) Driving Coupler *: Align the pin at the far end vertical and insert it into the coupling to fit the unit.

  • Page 69: Detaching And Refitting The Pf Forwarding, Pf Paper Feed And Pf Separation Pulleys (Left)

    (2) Detaching and refitting the PF forwarding, PF paper feed and PF separation pulleys (Left) Procedure 1. Pull out the left and right cassette com- pletely. Stopper 2. Pull the PF paper conveying unit. 3. Remove the screw and remove the Screw stopper.

  • Page 70: And Pf Separation Pulleys (Left) 1

    7. Remove the stop ring A and then PF paper feed pulley (Left) remove the one way clutch and PF One way paper feed pulley (Left). Feed gear clutch 8. Remove the stop ring B and then remove the PF forwarding pulley (Left). Stop ring A PF forwarding...

  • Page 71: Pwbs

    1-5-3 PWBs (1) Detaching and refitting the PF main PWB Procedure 1. Remove the wire cover. Wire cover Figure 1-5-13 2. Remove three screws and then remove the rear cover. Screw Screw Screw Rear cover Figure 1-5-14 1-5-9...
  • Page 72 3. Remove all connectors from the PF main PWB. PF main PWB YC12 YC11 YC14 YC15 YC10 YC13 YC16 PF main PWB Figure 1-5-15 4. Remove each the holder in two position and remove the PF main PWB. 5. Check or replace the PF main PWB and refit all the removed parts.

  • Page 73: Driving Section

    1-5-4 Driving section (1) Detaching and refitting the PF Driving unit Procedure 1. Remove three screws and then remove the rear cover. (seeP.1-5-7) 2. Remove the connector of AC electrical wire from the paper feeder. Connector Figure 1-5-17 3. Remove three wire holders. Wire saddle 4.
  • Page 74 5. Remove the connector and the band of PF paper feed motor. 6. Remove the connector (YC15) from the PF main PWB and then release the Connector electrical wires from two wire saddles. Band PF main PWB YC15 Wire saddle PF main PWB Figure 1-5-19 7.

  • Page 75: Detaching And Refitting The Pf Lift Motors

    (2) Detaching and refitting the PF lift motors Procedure 1. Remove three screws and then remove the rear cover. (seeP.1-5-7) 2. Remove each the connector. PF lift motor 1 3. Remove each three screws and then PF lift motor 2 remove the PF lift motor 1,2.
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  • Page 77: Paper Feed Section

    2-1 Mechanical Construction 2-1-1 Paper feed section The paper feeder is comprised of the right- and left-hand cassettes and their feeding units, and the paper feeding section for the left-hand cassette. The paper loaded on the lifting plate in the right-hand cassette is picked up to the PF, forwarding roller 1, PF feeding roller 1, and separator roller 1, one by one;...

  • Page 78: Left Cassette Section

    (2) Left cassette section Figure 2-1-2 Left cassette section 1. PF forwarding pulley 2 8. PF paper gauge sensor 2 upper (PFPGS2(U)) 2. PF paper feed pulley 2 9. PF paper gauge sensor 2 lower (PFPGS2(L)) 3. PF separation pulley 2 10.

  • Page 79: Right Cassette Paper Feed

    (3) Right cassette paper feed The paper fed by the right-hand cassette is transferred by the PF forwarding roller 1, PF feed roller 1, which are driver by the PF paper feed clutch PFPFCL1. The PF separator roller 1 acts to prevent multiple-page feeding and transfer the paper to the PF feed roller 2 into the device.
  • Page 80 VFDSW PFPCS1 YC5-7 VFDCL PFPCCL1 YC5-3 PF_R_SOL_ACT, PF_R_SOL_KEP PFPUSOL1 YC5-9,10 PFPS1 PFLS1 PFPCCL1 SIZE_R_SW PFSDSW1 YC3-15 PFPFCL2 PFFS1 CW/CCW, RDY, CLK, REM PFPFM YC16-1,2,3,4 PFLM1 AP_R_SW2 YC3-6 PFPGS1(U) AP_R_SW1 PFPGS1(L) YC3-3 FPMPWB Figure 2-1-4 Right cassette paper feed section block diagram 2-1-4...

  • Page 81: Left Cassette Paper Feed

    (4) Left cassette paper feed The paper from the left-hand cassette is transferred to the PF forwarding roller 2 and PF feed roller 2 which are revolved by the PF feed clutch 2 (PFPFCL2). The PF separator roller 2 acts to prevent multiple-page feeding and transfer the paper to the PF feed roller 2 into the device.
  • Page 82 PFMPWB VFDSW YC5-7 PFPCS1 EMPTY_L_SW PFPS2 YC4-3 PFPC VFDCL LIMIT_L_SW YC5-3 PFLS2 YC4-6 PFPC HFDCL2 YC15-5 PFPF FP_L_C YC15-7 FD_L_SW PFFS2 YC4-8 HFDSW PFPCS2 YC4-12 PF_L_SOL_ACT, PF_L_SOL_KEP PFPUSOL2 YC14-7,8 SIZE_L_SW YC6-15 PFSDSW2 OUT1B, OUT1A PFLM1 YC7-3,4 PAP_L_SW2 PFPGS2(U) YC6-6 PAP_L_SW1 PFPGS2(L) YC6-3 CW/CCW, RDY, CLK, REM...

  • Page 83: Electrical Parts Layout

    2-2 Electrical Parts Layout 2-2-1 Electrical parts layout (1) PWB and sensors Machine front Machine inside Machine rear Figure 2-2-1 PWB and sensors 1. PF main PWB (PFMPWB) ....Controls electrical parts. 2. PF paper conveying cover switch (PFPCCSW).......... Breaks the safety circuit when PF paper conveying cover is opened, and resets paper jam detection.
  • Page 84 14. PF paper size detection switch 2 (PFSDSW2) .......... Detects the size of paper in cassette 4. 15. PF cassette detection switch 1 (PFCDSW1) .......... Detects the presence of cassette 3. 16. PF cassette detection switch 2 (PFCDSW2) .......... Detects the presence of cassette 4. 17.

  • Page 85: Motors And Others

    (2) Motors and others Machine front Machine inside Machine rear Figure 2-2-2 Motor and others 1. PF paper feed motor (PFPFM) ..... Drives the paper feeder. 2. PF lift motor 1 (PFLM1)......Drives the lifts of cassette 3. 3. PF lift motor 2 (PFLM2)......Drives the lifts of cassette 4. 4.
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  • Page 87: Pf Main Pwb

    2-3 Operation of the PWBs 2-3-1 PF main PWB YC12 YC11 Figure 2-3-1 PF main PWB silk-screen diagram 2-3-1...
  • Page 88 Connector Signal Voltage Description PAP_R_SW1_P 1.2 V DC 1.2 V DC power output to PFPGS1(L) Connected to Ground the PF paper PAP_R_SW1 0/3.3 V DC PFPGS1(L): On/Off gauge sensor PAP_R_SW2_P 1.2 V DC 1.2 V DC power output to PFPGS1(U) 1 lower, PF paper gauge sensor 1...
  • Page 89 Connector Signal Voltage Description Ground Connected to R_COVER_SW 0/3.3 V DC PFPCCSW: On/Off the PF paper VFDCL 0/24 V DC PFPCCL1: On/Off conveying 24V1 24 V DC 24 V DC power output to PFPCCL1 cover switch, PF paper con- VFDSW_PW 1.2 V DC 1.2 V DC power output to PFPCS1 veying sen-...
  • Page 90 Connector Signal Voltage Description SIZE_L_SW 0/3.3 V DC PFSDSW1: On/Off Connected to DEK_L_SW_PW 1.2 V DC 1.2 V DC power output to PFCDSW1 the PF paper Ground gauge sensor DEK_L_SW 0/3.3 V DC PFCDSW1: On/Off 2 upper, PF paper gauge Not used sensor 2 lower, PF size...
  • Page 91 Connector Signal Voltage Description YC14 HCUSW 0/3.3 V DC PFPCUSW: On/Off Connected to Ground the PF paper 24V3 24 V DC 24 V DC power output to PFRSOL conveying RESOL_ACT 0/24 V DC PFRSOL: On/Off (actuate) unit switch, PF retard RESOL_KEP 0/24 V DC PFRSOL: On/Off (keep)
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  • Page 93: Appendixes 2-4-1

    3NF-1 2-4 Appendixes 2-4-1 Appendixes (1) List of maintenance parts Maintenance part name Alternative Part No. part No. Name used in service manual Name used in parts list PULLEY FEED 302K906350 2K906350 PF paper feed pulley 1 PF paper feed pulley 2 PULLEY RETARD 302K906360 2K906360...

  • Page 94: Periodic Maintenance Procedures

    3NF-1 (2) Periodic maintenance procedures Maintenance User Mainte- Section Points and cautions Page part/location call nance * Paper feed PF paper feed pulley 1 Check Check Clean with alcohol or a dry cloth. P.1-5-2 section Clean Replace Replace after feeding 150,000 P.1-5-7 sheets.

  • Page 95: Wiring Diagram

    3NF-1 (3) Wiring diagram YC13 ENG_SDO PF_SDI PFLM2 ENG_SDI PF_SDO ENG_CLK PF_CLK YC13 ENG_SEL PF_SEL ENG_SDO PF_SDI OUT2B ENG_RDY PF_RDY PFLM2 ENG_SDI PF_SDO OUT2A ENG_PAU PF_PAUSE ENG_CLK PF_CLK PFLM1 OUT1B ENG_OPN1 PF_CAS_SW1 ENG_SEL PF_SEL OUT1A ENG_OPN2 PF_CAS_SW2 OUT2B ENG_RDY PF_RDY +3.3V2 +3.3V2 OUT2A...
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