Utax PF 740 Service Manual
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Utax PF 740 Service Manual

Utax PF 740 Service Manual

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Service
Manual
Paper Feeder
PF 740B
Rev.: 2.0
Date: 28-10-2013
3NFSM062

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Summary of Contents for Utax PF 740

  • Page 1 Service Manual Paper Feeder PF 740B Rev.: 2.0 Date: 28-10-2013 3NFSM062...
  • Page 2 Service Manual Paper Feeder PF 740B Rev.: 2.0 Date: 28-05-2013 3NFSM062...
  • Page 3 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 4 Revision history Revision Date Replaced pages Remarks April 6, 2011 CONTENTS, 2-4-1 to 2-4-3 October COVER,CONTENTS,1-1-1,1-2-6,1-3-2,1-3-5 to 10, 2013 1-3-29,1-4-1 to 1-4-18,1-5-2 to 1-5-10,2-1-4,2-1-6, 2-2-3,2-3-3,2-3-5,2-4-1,2-4-3...
  • Page 5 This page is intentionally left blank.
  • Page 6 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 7 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 8 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 9 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 10 • 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 11 This page is intentionally left blank.

  • Page 12: Table Of Contents

    3NF-2 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 13 3NF-2 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......................2-2-1 (2) Motors and others......................

  • Page 14: Specifications

    3NF-2 1-1 Specifications 1-1-1 Specifications Item Specifications Feed & reverse roller method (No. Sheets: 3,000 (80 g/m )/No. Sheets: Paper Supply Method 3,500 (64 g/m Paper Size A4, B5, Letter Paper 60 to 256 g/m weight Supported Paper Media Plain, Recycled, Thick, Veiium types Dimensions 23 35/64 ×...

  • Page 15: 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 16 1-1-3 Machine cross section Paper path Figure 1-1-2 1-1-3...
  • Page 17 This page is intentionally left blank. 1-1-4...

  • Page 18: 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 19: 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 20: Unpacking

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

  • Page 21: 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 22 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 23: Installing The Cassette Heater (Option)

    3NF-2 1-2-4 Installing the cassette heater (Option) Cassette heater installation requires the following parts: 120 V specifications Parts Quantity Part.No. Cassette heater set 303NF94130 Supplied parts of cassette heater set (303NF94130): Parts Quantity Part.No. Cassette heater 120V 302H794620 Wire saddle 7YZM610001++H01 Connector cover 303NF04140...
  • Page 24 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 25 5. Install three wire saddles on the bottom Wire saddle frame of the paper feeder. Wire saddle 6. Install the cassette heater by using two Wire saddle screws. Screw Screw Cassette heater Figure 1-2-9 1-2-8...
  • Page 26 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 27 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 1-2-10...

  • Page 28: 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 29: Maintenance Modes Item List

    3NF-2 (2) Maintenance modes item list Section Item Content of maintenance item General U000 Outputting an own-status report U001 Exiting the maintenance mode U019 Firmware Version Drive, U034 Adjusting the print start timing paper feed LSU Out Top and paper LSU Out Left conveying system...

  • Page 30: 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 31 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 32 3NF-2 Item No. Description U000 Event log Event Log 2013/01/31 08:40 Firmware version 2N4_2000.000.000 2013.01.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] (12) Paper Jam Log Counter Log Count. Event Descriprions Date and Time J0000: J0041: C0000: 9999999 0501.01.08.01.01 2013/01/23 11:56 J0001: J0042: C0001: 8888888 4002.01.08.01.01...
  • Page 33 3NF-2 Item No. Description U000 Detail of event log Items Description Controller BROM version Operation panel mask version Machine serial number Paper Jam Count. Event Descriptions 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 34 3NF-2 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 35 3NF-2 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 1-4-11) diagnostics error. If the self diagnostics the occurrence of error.
  • Page 36 3NF-2 Item No. Description U000 Items Description (11) Unknown Toner Count. Item Remembers 1 to 5 The total page count Unknown toner log of occurrence of at the time of the code unknown toner toner empty error (1 byte, 2 categories) detection.
  • Page 37 3NF-2 Item No. Description U000 Service status page (1) Service Status Page 2012/10/27 12:00 Firmware version 2N4_2000.000.000 2012.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Controller Information (30) FAX Information Slot1/Slot2 (31) Rings (Normal) Memory status (32) Rings (FAX/TEL) Total Size 3.5 GB (33) Rings (TAD) (34) Option DIMM Size...
  • Page 38 3NF-2 Item No. Description U000 Service status page (2) Service Status Page 2012/10/27 12:00 Firmware version 2N4_2000.000.000 2012.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Engine Information Send Information (40) (44) NVRAM Version _1F31225_1F31225 Date and Time 10/10/27 (41) Scanner Version 2N4_1200.001.089 (45) Address (42) FAX Slot1 FAX BOOT Version...
  • Page 39 3NF-2 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)
  • Page 40 3NF-2 Item No. Description U000 Description Supplement (26) Average coverage for printer Black/Cyan/Magenta/Yellow (27) Average coverage for fax Black/Cyan/Magenta/Yellow (28) Cleared date and output date (29) Coverage on the final output page (30) Fax kit information This item is printed only when the fax kit is installed.
  • Page 41 3NF-2 Item No. Description U000 Description Supplement (42) Fax firmware version This item is printed only when the fax kit is installed. (43) Mac address (44) The last sent date and time (45) Transmission address (46) Destination information (47) Area information (48) Margin settings Top margin/Left margin...
  • Page 42 3NF-2 Item No. Description U000 Description Supplement (63) Job end detection mode (64) Prescribe environment reset 0: Off 1: On (65) Media type attributes Weight settings Fuser settings 1 to 28 (Not used: 18, 19, 20) 0: Light 0: High * : For details on settings, 1: Normal 1 1: Middle...
  • Page 43 3NF-2 Item No. Description Description Supplement (88) Data Sanitization information (89) Toner low setting 0: Enabled 1: Disabled (90) Toner low detection level 0 to 100 (%) (91) Limiting shifting for one-page 0: Invalid (No shift limit) document 1: Valid (Shift limit) (92) Setting confirmation display for 0: Not shown...
  • Page 44 3NF-2 Item No. Description U019 Firmware 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 45 3NF-2 Item No. Description U019 Display Description SMT SSW Side multi tray multi feed sensor Side paper feeder / Side large capacity feeder firmware PF2 Boot Side paper feeder / Side large capacity feeder booting 1000-sheet finisher / 4000-sheet finisher firmware DF Boot 1000-sheet finisher / 4000-sheet finisher booting Punch unit firmware...
  • Page 46 3NF-2 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 47 3NF-2 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 48 3NF-2 Item No. Description U034 5. Change the setting value using the cursor +/- or numeric keys. For output example 1, increase the value. For output example 2, decrease the value. Leading edge registration (20 ± 1.0 mm) Correct image Output Output example 1...
  • Page 49 3NF-2 Item No. Description U034 5. Change the setting value using the +/- keys or numeric keys. For output example 1, increase the value. For output example 2, decrease the value. Center line of printing (within ± 2.0 mm) Correct image Output Output example 1...
  • Page 50 3NF-2 Item No. Description U247 Setting the paper feed device Description Turn 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 51 3NF-2 Item No. Description U247 Method: [LCF/Side LCF] 1. Press [Motor] or [Clutch] 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 52 3NF-2 Item No. Description U251 Checking/clearing the maintenance counter Description Displays and clears or changes the maintenance count and automatic grayscale adjustment count. Purpose To verify the maintenance counter count and automatic grayscale count. Also to clear the count during maintenance service. Setting 1.
  • Page 53 3NF-2 Item No. Description 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. Press the start key. 2. Select the item to set.. Display Description Mode1 Setting On when the humidity is 65%.
  • Page 54 3NF-2 Item No. Description U901 Checking copy counts by paper feed locations Description Displays or clears paper feed counts by paper feed locations. Perform backup when the counters on the engine PWB and PF main PWB do not match. Purpose To check the time to replace consumable parts.
  • Page 55 3NF-2 Item No. Description U903 Checking/clearing the paper jam counts Description Displays or clears the jam counts by jam locations. Purpose To check the paper jam status. Also to clear the jam counts after replacing consumable parts. Method 1. Press the start key. 2.
  • Page 56 3NF-2 Item No. Description U903 Detail of history of paper jams Maintenance Report 2013.01.17 08:17 Firmware version 2N4_2000.000.000 2012.11.17 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Machine No.: SPXXX00001 Life Count : 001234 Paper Jam Log 2012.12.12 JAM0000 JAM0100 JAM0101 JAM0110 JAM0111 JAM0112 JAM0131 JAM0210 Figure 1-3-6 Description...
  • Page 57 This page is intentionally left blank. 1-3-30...

  • Page 58: Paper Mis Feed Detection

    3NF-2 1-4 Troubleshooting 1-4-1 Paper mis feed detection (1) Paper mis feed indication When a paper misfeed occurs, the machine immediately stops printing and displays the paper misfeed mes- sage on the operation panel. To remove paper misfed in the machine, pull out the cassette, open the paper conveying unit or paper conveying cover.
  • Page 59 3NF-2 N-14 E-11 B-03 C-05 C-04 O-08 O-07 E-12 O-13 C-05 O-08 C-02 Position code (displayed on the panel) Positions in the individual systems (See below.) Figure 1-4-2 Paper mis feed indication C. Mis feed in cassette 3 or 4 E.

  • Page 60: Paper Mis Feed Detection Condition

    3NF-2 (2) Paper mis feed detection condition J 43xx Side multi tray J 37xx PCS2 SMMFS SMES SMFS SMPCS3 SMPCS1 PFPCS2 J 31xx J 33xx J 26x3 J 36 xx J 26xx PFPCS1 J 34xx J 27xx PFPCS1 J 26x4 J 35xx SMPFM PFFS2...
  • Page 61 3NF-2 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 62 3NF-2 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 63 3NF-2 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 64: Troubleshooting

    3NF-2 1-4-2 Troubleshooting (1) First check items If the paper is fed askew, jammed, curled, or leading-edge dog-eared, first perform to check the following items. Check items Check description Corrective measures Paper 1. Check the paper delivered is If a dog-ear has happened, check there are no objects dog-eared, skewed, rumpled, existing in the conveying paths and, if any, fix.
  • Page 65 3NF-2 Check items Check description Corrective measures Settings/ 1. Check if the margin is If the check line is not situated at 20mm±1mm from the Detection 4.0+1.5/-1.0mm from the leading edge, adjust the leading margin by U402. leading edge of paper. 2.
  • Page 66 3NF-2 Check items Check description Corrective measures Conveying 1. Check the conveying rollers Clean the conveying rollers or the pollyes. roller, feed have no paper dusts, toner, If variation in the external diameter or abrasion is roller or foreign objects observed, replace.

  • Page 67: Self-Diagnostic Function

    3NF-2 1-4-3 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 68: Self Diagnostic Codes

    3NF-2 (2) Self diagnostic codes If the part causing the problem was not supplied, use the unit including the part for replacement. Check procedures/ Code Contents Causes corrective measures Cassette lift base 1030 PF lift motor 1 error Check that the cassette base can be (paper feeder) elevating manipulated smoothly, if not, repair or...
  • Page 69 3NF-2 Check procedures/ Code Contents Causes corrective measures Cassette lift base 1040 PF lift motor 2 error Check that the cassette base can be (paper feeder) elevating manipulated smoothly, if not, repair or After cassette 4 is inserted, replace. mechanism PF lift sensor 2 does not turn PF Lift motor 2 1.
  • Page 70 3NF-2 Check procedures/ Code Contents Causes corrective measures Cassette lift base 1060 PF lift motor 1 error Check that the cassette base can be (side paper feeder) elevating manipulated smoothly, if not, repair or [45 ppm/55 ppm model] replace. mechanism After cassette 6 is inserted, PF Lift motor 1 1.
  • Page 71 3NF-2 Check procedures/ Code Contents Causes corrective measures Cassette lift base 1070 PF lift motor 2 error Check that the cassette base can be (side paper feeder) elevating manipulated smoothly, if not, repair or [45 ppm/55 ppm model] replace. mechanism After cassette 7 is inserted, PF Lift motor2 1.
  • Page 72 3NF-2 Check procedures/ Code Contents Causes corrective measures Paper feeder 1800 Paper feeder communica- Check the wiring connection status with the tion error main unit and, if necessary, try connecting it A communication error from again. paper feeder is detected 10 PF main PWB 1.

  • Page 73: Electric Problems

    3NF-2 1-4-4 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 74 3NF-2 Problem Causes Check procedures/corrective measures 1. Defective connector Reinsert the connector. Also check for continuity within the The message cable or poor con- connector cable. If none, replace the cable. requesting paper to tact in the connector. PF paper feed sensor 1 and PF main PWB (YC5) be loaded is shown PF paper feed sensor 2 and PF main PWB (YC4) when paper is...

  • Page 75: Mechanical Problems

    3NF-2 1-4-5 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 76: 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 77: Paper Feed Section

    3NF-2 1-5-2 Paper feed section (1) Detaching and refitting the primary paper feed unit 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 Figure 1-5-1 3.
  • Page 78 3NF-2 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 79 3NF-2 PF primary 7. Remove each two fixed screws of the paper feed unit PF primary paper feed unit. 8. Remove the PF primary units. Screws PF primary paper feed unit Figure 1-5-5 9. Refit the PF primary paper feed unit. *: Align the pin at the far end vertical and insert it into the coupling to fit the unit.

  • Page 80: Detaching And Refitting The Pf Forwarding, Pf Paper Feed And Pf Separation Pulleys (Right)

    3NF-2 (2) Detaching and refitting the PF forwarding, PF paper feed and PF separation pulleys (Right) Procedure 1. Pull the cassette 3 completely. Cassette 3 2. Remove the four screws and then remove the cassette 3. Screw Screw Screw Screw Figure 1-5-7 3.
  • Page 81 3NF-2 5. Unhook the two hooks and then remove the cover. Hooks Cover Figure 1-5-9 6. Remove the hook and remove the sep- aration pulley (right) from the axle. *: Confirm that the nipping between the feed roller and separation roller is released.

  • Page 82: Detaching And Refitting The Pf Forwarding, Pf Paper Feed And Pf Separation Pulleys (Left)

    3NF-2 (3) 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. Screw 3. Remove the screw and remove the stopper.
  • Page 83 3NF-2 7. Remove the hook and remove the for- warding pulley (left) from the axle. 8. Remove the hook and remove the feed pulley (left) from the axle. Hook Paper feed pulley (left) Forwarding pulley (left) Figure 1-5-13 9. Unhook the two hooks and then remove the cover.
  • Page 84 3NF-2 10. Remove the hook and remove the sep- aration pulley (left) from the axle. 11. Clean or replace the forwarding pulley (left), paper feed pulley (left) and sepa- ration pulley (left). 12. Refit the forwarding pulley (left), paper Hook feed pulley (left) and separation pulley (left) to the primary paper feed unit.

  • Page 85: Pwbs

    3NF-2 1-5-3 PWBs (1) Detaching and refitting the PF main PWB Procedure 1. Remove the wire cover. Wire cover Figure 1-5-16 2. Remove three screws and then remove the rear cover. Screw Screw Screw Rear cover Figure 1-5-17 1-5-10...
  • Page 86 3. Remove all connectors from the PF main PWB. PF main PWB YC12 YC11 YC14 YC15 YC10 YC13 YC16 PF main PWB Figure 1-5-18 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 87: 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 1-5-20 3. Remove three wire holders. Wire saddle 4.
  • Page 88 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 1-5-22 7.

  • Page 89: 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) PF lift motor 1 2. Remove each the connector. 3. Remove each three screws and then PF lift motor 2 remove the PF lift motor 1,2.

  • Page 90: 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 91: 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)) 9. PF paper gauge sensor 2 lower (PFPGS2(L)) 2. PF paper feed pulley 2 3. PF separation pulley 2 10.

  • Page 92: 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 93 3NF-2 VFDSW PFPCS1 YC5-7 VFDCL PFPCCL1 YC5-3 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 94: 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 95 3NF-2 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 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 PFPFM YC16-1,2,3,4 Figure 2-1-6 Left cassette paper feed section block diagram...

  • Page 96: 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 97 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 98: Motors And Others

    3NF-2 (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 100: 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 101 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 102 3NF-2 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...
  • Page 103 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 104 3NF-2 Connector Signal Voltage Description YC14 HCUSW 0/3.3 V DC PFPCUSW: On/Off Connected to Ground the PF paper 24V3 Not used conveying RESOL_ACT Not used unit switch, PF retard RESOL_KEP Not used solenoid. 24V3 Not used PF_L_SOL_ACT Not used PF_L_SOL_KEP Not used YC15 RF_R_CL...
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  • Page 106: Appendixes 2-4-1

    3NF-2 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 302N406030 2N406030 PF paper feed pulley 1 PF paper feed pulley 2 PULLEY RETARD 302N406040 2N406040...

  • Page 107: 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.1-5-8 sheets.

  • Page 108: Wiring Diagram

    3NF-2 (3) Wiring diagram YC13 ENG_SDO PF_SDI ENG_SDI PF_SDO PFLM2 ENG_CLK PF_CLK ENG_SEL PF_SEL OUT2B ENG_RDY PF_RDY OUT2A ENG_PAU PF_PAUSE OUT1B ENG_OPN1 PF_CAS_SW1 PFLM1 OUT1A ENG_OPN2 PF_CAS_SW2 +3.3V2 +3.3V2 GND(SLEEP) 24[V] PAP_L_SW1_PW 24[V] PFPGS2(L) SD_1 SIDE_CLK YC11 PAP_L_SW1 SD_2 SIDE_SDO(PF) PAP_L_SW2_PW 24V2 SD_3...

  • Page 109: Installation Guide

    1-1 INSTALLATION GUIDE INSTALLATION GUIDE FOR LARGE CAPACITY FEEDER...
  • Page 110 B(2) J(2) G(4) K (M4x20)(4) H (M4x8)(3) I (12) *I (6) **I (2) E. Clamp ............1 K. S Tite screws M4 × 20 ......4 English F. Wire cover..........1 Be sure to remove any tape and/or cushioning Supplied parts G.
  • Page 111 Procedure 1.Pull out the right cassette (1) and the left 3.Pull out the lower paper cassette (4) from Before starting installation, be sure to turn the cassette (2) from the paper feeder (A). the machine. main power switch of the machine off, and Remove the lift plate stopper (3) from each 4.Remove the paper cassette (4-1).
  • Page 112 5.Place the machine (7) on the paper feeder 6.Secure the machine (7) to the paper feeder 7.Align the holes (8) of the lower cassette (4-1) (A) so that the pins (5) at the front left and (A) with the 2 pins (B). for the machine with the pins (9) in the cas- front right of the paper feeder (A) are aligned sette slider (4-2).
  • Page 113 H(M4x8) 9.Remove the screw (10) in the rear of the 10.Remove the screw (12) to remove the metal 11.Fit the hook (14) on the mounting plate (C) paper feeder and remove the cover (11). plate (13). into the opening (15) and then align the 2 positioning projections.
  • Page 114 17 19 13.Pass the power cord (16) through the edging 14.Connect the power cord (20) and the signal 16.Open the lower right cover (24) on the (small) (17) and the signal cable (18) cable (21) to connectors (22) (23) respec- machine.
  • Page 115 H(M4x8) H(M4x8) 17.Open the paper feeder right cover (27). 18.Fit the 3 hooks (28) on the intermediate paper conveying unit (D) into the 3 holes (29) in the guide. 19.Secure the intermediate paper conveying unit (D) with the 2 S Tite screw M4 × 8 (H). NOTICE Be sure to use S Tite screw M4 ×...
  • Page 116 20.Connect the intermediate paper conveying 22.Insert the projection (31) on the wire cover 24.Turn the adjusters on each corner (33) until unit connector (30). (F) into the hole (32) in the paper feeder and they reach the floor and then secure the 21.Attach the clamp (E) and secure the connec- install the wire cover (F).
  • Page 117 K (M4x20) K (M4x20) 25.Select holes (34) and install each stopper (J) with 2 S Tite screws M4 × 20 (K) so that the stoppers will be grounded on the floor. 25.Sélectionner les trous (34) et installer chaque butée (J) avec 2 vis S Tite M4 × 20 (K) de sorte que les butées reposent sur le sol. 25.Seleccione los orificios (34) e instale cada tope (J) con los 2 tornillos S Tite M4 ×...
  • Page 118 Setting the paper size plate and media type Changing paper size (metric specifications 1.Pull out the cassette of the paper feeder. plate only) 2.Turn the front lock lever (35) 90° and remove Insert the paper size plate (G) and media type At shipment, Letter is set for inch models and A4 the front deck cursor (36).
  • Page 119 3.Move the front deck cursor (36) so that it is aligned with the size indicators on the top (38) and 6.Release the hook (40) and remove the deck bottom (37) of the cassette. trailing edge cursor (41). 4.Turn the front lock lever (35) 90° to lock it. 5.Move the rear deck cursor (39) in the same way.
  • Page 120 0.5〜1.5mm 7.Lift up the sub-cursor (42). Adjusting the cursor width 8.Align with the size indicator (43), engage the 1.Load paper in the cassettes. hook (44) and install the deck trailing edge 2.If the gap between the front deck cursor (36) and the paper (45) is outside the 0.5 to 1.5 mm cursor (41).
  • Page 121 3.Insert a Philips-head screwdriver into the 2 long slots (46) in the front deck cursor (36) and loosen 4.Retighten the 2 adjusting screws (47). the 2 adjusting screws (47). Then move the front deck cursor (36). 5.Check that the gap between the front deck cursor (36) and the paper is between 0.5 and 1.5 mm.
  • Page 122 Adjusting the center line The reference value for the center line is ±0.5 mm or less at position (b) in the correct image (a). If the center line position is outside this range, perform the following adjustment. 1.Set maintenance mode U034, select LSU Out Left and Cassette3 or Cassette4. 2.Adjust the values.

This manual is also suitable for:

Pf 740b

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