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Kyocera FS-1350DN Service Manual

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See also: Operating Manual , User Manual
FS-1350DN
SERVICE
MANUAL
Published in October 2008
842H4010
2H4SM060
First Edition

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Summary of Contents for Kyocera FS-1350DN

  • Page 1: Service Manual

    FS-1350DN SERVICE MANUAL Published in October 2008 842H4010 2H4SM060 First Edition...
  • 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...
  • 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: Installation Precautions

    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: Precautions For Maintenance

    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

    (1) Precautions ............................1-5-1 (2) Drum..............................1-5-1 (3) Toner container ..........................1-5-1 (4) How to tell a genuine Kyocera Mita toner container................1-5-2 1-5-2 Outer covers ............................1-5-3 (1) Detaching and refitting the top cover....................1-5-3 (2) Detaching and refitting the right and left covers ................1-5-4 1-5-3 Paper feed section ..........................1-5-6...
  • Page 12 (1) Detaching and refitting the fuser unit....................1-5-16 (2) Switching the fuser pressure ......................1-5-18 1-5-8 PWBs ..............................1-5-19 (1) Detaching and refitting the control PWB ..................1-5-19 (2) Detaching and refitting the power source PWB................1-5-22 (3) Detaching and refitting the high voltage PWB.................1-5-24 1-5-9 Others ..............................1-5-28 (1) Detaching and refitting the main motor ...................1-5-28 (2) Detaching and refitting the laser scanner unit .................1-5-29...

  • Page 13: Specifications

    1-1 Specifications 1-1-1 Specifications Type ..........Desktop Printing method....... Electrophotography, laser scan Paper weight........Cassette: 60 to 120 g/m (Duplex: 60 to 105 g/m MP tray: 60 to 220 g/m Paper type ........Cassette: Plain, Preprinted, Bond, Recycled, Rough, Letterhead, Color (Colour), Prepunched, High quality, Custom 1 to 8 MP tray: Plain, Transparency, Preprinted, Labels, Bond, Recycled, Rough, Vellum,...
  • Page 14 Controller ........PowerPC 440F5/500 MHz Supported OS ......... Windows 2000 Service Pack 2 or later, Windows Server 2003, Windows XP, Windows Vista, Mac OS X 10.x Interface.......... Hi-Speed USB: × 1 Network: × 1 (10BASE-T/100BASE-TX) KUIO-W slot: × 1 PDL..........PRESCRIBE Dimension (W ×...

  • Page 15: Parts Names

    1-1-2 Parts names (1) Overall Figure 1-1-1 Top cover Sub tray Paper stopper 10. Optional interface slot cover Top tray 11. USB interface connector Operation panel 12. Network interface connector Right side cover 13. Rear cover Cassette 14. Power cord connector Front cover 15.
  • Page 16 (2) Operation panel Figure 1-1-2 Ready indicator Data indicator Attention indicator Message display Cursor keys GO key CANCEL key OK key MENU key 1-1-4...

  • Page 17: Machine Cross Section

    1-1-3 Machine cross section Light path Paper path Paper path (option) Figure 1-1-3 Cassette Drum unit MP tray Laser scanner unit Paper feed/conveying Transfer/separation section section 10. Fuser section Toner container 11. Paper exit section Developing unit 12. Top tray Main charger unit 13.
  • Page 18 This page is intentionally left blank. 1-1-6...

  • Page 19: Installation Environment

    1-2 Installation 1-2-1 Installation environment ° ° Temperature: 10 to 32.5 C/50 to 90.5 Humidity: 15 to 80%RH Power supply: 120 V AC, 12 A 220 - 240 V AC, 7.2 A (Average) ± ± Power source frequency: 50 Hz 0.3%/60 Hz 0.3% Installation location...

  • Page 20: Unpacking

    1-2-2 Unpacking 220 - 240 V AC model 120 V AC model Figure 1-2-2 Printer Toner container Outer case 10. Plastic bag Bottom pad L 11. Power cord Bottom pad R 12. Rear right pad Machine cover 13. Plastic bag Top pad L 14.

  • Page 21: Removing The Tapes

    (1) Removing the tapes <Procedure> 1. Remove three tapes. Tape Tape Tape Figure 1-2-3 1-2-3...

  • Page 22: Installing The Expanded Memory (Option)

    1-2-3 Installing the expanded memory (option) <Procedure> 1. Turn off printer power switch. Caution: Do not insert or remove expanded memory while printer power is on. Doing so may cause damage to the printer and the expanded memory. 2. Remove the right side cover. 3.

  • Page 23: Installing The Memory Card (Optional)

    1-2-4 Installing the memory card (optional) <Procedure> 1. Turn off printer power switch. Caution: Do not insert or remove memory card while printer power is on. Doing so may cause damage to the printer and the memory card. 2. Open the rear cover. 3.
  • Page 24 This page is intentionally left blank. 1-2-6...

  • Page 25: Maintenance Mode

    1-3 Maintenance Mode 1-3-1 Maintenance mode The printer is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Message display Ready Press the MENU key. Report Print > Press the key several times until [Adjust/Maintenance >] is displayed.

  • Page 26: Contents Of Maintenance Mode Items

    (2) Contents of maintenance mode items Maintenance items Description Printing a status page for service purpose Description >>Print Prints a status page for service purpose. The status page includes various printing set- Status Page tings and service cumulative. Purpose To acquire the current printing environmental parameters and cumulative information. Procedure Enter the maintenance mode [>>Print Status Page].
  • Page 27 Maintenance items Description Details of service status page 1 Items Description System version System date Engine software version Engine software boot version Controller BROM version Operation panel mask version Machine serial number Standard memory size Option slot memory size Total memory size Local time zone TIme server Optional paper feeder installing information...
  • Page 28 Maintenance items Description Service status page 2 Service Status Page Printer Firmware version 2H4_2000.000.000 2008.09.27 [XXXXXXXX][XXXXXXXX][XXXXXXXX[XXXXXXXX] Engine Information NVRAM Version XXXXXXXXXXX MAC Address 00.00.00.00.00.00 100/100 0/0/0/0/0/ 0/0/0/0/0/ 0/0/0/0/0/0/0/0/ 0000000/0000000/0000000/0000000/0000000/0000000/ F00/U00/0/0/0/0/30/ABCDE/ 0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/ 0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/ 0203040508090A0B0C0D0F101112131415161718191A1B1C1D1E1F202122235E 12345678/11223344/00001234abcd567800001234abcd5678/01234567890123456789012345678901/0008/00/07 XXXXXXXX FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/ FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/...
  • Page 29 Maintenance items Description Details of service status page 2 Items Description NV RAM version _ Bb 04B29 _ Bb 04B29 (a) (b) (d) (e) (a) Consistency of the present software version and the database _ (underscore): OK * (Asterisk): NG (b) Database version (c) The oldest time stamp of database version (d) Consistency of the present software version and the ME firmware...
  • Page 30 Maintenance items Description Items Description Operation panel lock status 0: Off 1: Partial lock 2: Full lock USB information 0: Not connected 1: Full-Speed 2: Hi-Speed Paper handling information 0: Paper source unit select 1: Paper source unit Black and white printing dou- 0: All single counts ble count mode 3: Folio, Single count, Less the 330 mm (length)
  • Page 31 1. Enter the maintenance mode [>>Print Test Page]. 2. Press the OK key. [>>Print Test Page?] will be displayed. 3. Press the OK key. A sheet of test page will be printed. Completion FS-1350DN SN:SPL8307597 Counter:1135 Figure 1-3-3 Write data (USB memory data write) Description >>Write Data...
  • Page 32 Maintenance items Description Toner install mode Description >>Developer The new developing unit is shipped from the factory with no toner contained. The develop- ing unit can be automatically replete with toner when a toner container is installed onto it and the printer is turned on. However, because the toner reservoir in the developing unit has a large capacity, it requires a lengthy period of time until a substantial amount of toner has been fed to get the printer ready.

  • Page 33: Printing An Event Log (Event Log)

    (3) Printing an event log (EVENT LOG) Service items Description Printing an event log Printing an event log (EVENT LOG) (EVENT LOG) Description Prints a history list of occurrences of paper jam, self-diagnostics, toner replacements, etc. Purpose To allow machine malfunction analysis based on the frequency of paper misfeeds, self diag- nostic errors and replacements.

  • Page 34: Event Log

    Service items Description Detail of event log Event Log Printer Firmware Version 2H4_2000.000.000 2008.08.08 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Paper Jam Log Service Call Log Count. Event Descriptions Count. Service Code 9999999 10. 48. 01. 88. 01. 01 1111111 00. 0000 8888888 10.
  • Page 35 Service items Description Items Description Firmware version Engine software ver- sion Engine boot version Main ROM version Panel mask version Machine serial number Paper Jam Log Count. Event Remembers 1 to 16 of The total page count Log code (2 digit, hexa- occurrence.
  • Page 36 Service items Description Items Description (a) Cause of paper jam cont. 10: Paper does not arrive at the registration sensor. [42] (MP tray) 10: Paper does not arrive at the registration sensor. [31] (Cassette 1) 10: Paper does not arrive at the registration sensor. [31] (Cassette 2) 10: Paper does not arrive at the registration sensor.
  • Page 37 Service items Description Items Description (c) Detail of paper source (Hexadecimal) cont. 00: MP tray 01: Cassette 1 (Printer) 02: Cassette 2 (Paper feeder 1) 03: Cassette 3 (Paper feeder 2) 04 to 09: - (d) Detail of paper size (Hexadecimal) 00: (indefinite) 0B: B4 23: Special 2...
  • Page 38 Service items Description Items Description Maintenance Count. Item Remembers 1 to 8 of The total page count at the Code of maintenance replacing occurrence of replace- time of the replacement of item (1 byte, 2 categories) ment. If the occurrence of the toner container.

  • Page 39: Paper Misfeed Detection

    1-4 Troubleshooting 1-4-1 Paper misfeed detection (1) Paper misfeed indication When a paper misfeed occurs, the printer immediately stops printing and displays the paper misfeed message on the operation panel. To remove paper misfed in the printer, pull out the paper cassette, open the front cover, rear cover or duplexer’s cover, or remove the drum unit.

  • Page 40: Self-Diagnostic Function

    1-4-2 Self-diagnostic function (1) Self-diagnostic function This printer is equipped with self-diagnostic function. When a problem is detected, the printer stops printing and display an error message on the operation panel. An error message consists of a message prompting a contact to service personnel, total print count, and a four-digit error code indicating the type of the error.

  • Page 41: Self Diagnostic Codes

    (2) Self diagnostic codes Remarks Code Contents Causes Check procedures/corrective measures 0100 Backup memory device error Defective flash Replace the control PWB (See page 1-5- memory (U10). 19). Defective control Replace the control PWB (See page 1-5- PWB. 19). 0110 Backup memory data error Defective flash Replace the control PWB (See page 1-5-...
  • Page 42 Remarks Code Contents Causes Check procedures/corrective measures 2000 Main motor error Defective harness Reinsert the connector. Also check for conti- The main motor ready input is not given between main nuity within the connector harness. If none, for 2 s during the main motor is ON. motor (CN1) and remedy or replace the harness.
  • Page 43 Remarks Code Contents Causes Check procedures/corrective measures 6030 Broken fuser thermistor wire Poor contact in the Reinsert the connector (See page 1-5-16). Input from fuser thermistor is 0 (A/D fuser thermistor value). connector termi- nals. Broken fuser ther- Replace the fuser unit (See page 1-5-16). mistor wire.
  • Page 44 Remarks Code Contents Causes Check procedures/corrective measures F020 Control PWB RAM checksum error Defective main Turn the power switch off/on to restart the memory (RAM) on printer. If the error is not resolved, replace the control PWB. control PWB (See page 1-5-19). Defective Replace the expanded memory (DIMM) expanded memory...

  • Page 45: Image Formation Problems

    1-4-3 Image formation problems (1)Completely blank (2)All-black printout. (3)Dropouts. (4)Black dots. (5)Black horizontal printout. streaks. See page 1-4-8 See page 1-4-8 See page 1-4-9 See page 1-4-9 See page 1-4-9 (6)Black vertical (7)Unsharpness. (8)Gray background. (9)Dirt on the top (10)Undulated print- streaks.

  • Page 46: All-Black Printout

    (1) Completely blank printout. Print example Causes Check procedures/corrective measures Defective drum unit or developing Open the top cover and check that the drum unit and develop- unit. ing unit are correctly seated. Investigate that the terminals between the main charger unit and the drum unit are not in loose contact (See page 1-5-12 and 1-5-11).

  • Page 47: Dropouts

    (3) Dropouts. Print example Causes Check procedures/corrective measures Defective developing roller (develop- If the defects occur at regular intervals of 62.8 mm/2 " (See ing unit). page 2-4-2), the problem may be the damaged developing roller (in the developing unit). Replace the developing unit (See page 1-5-11).

  • Page 48: Black Vertical Streaks

    (6) Black vertical streaks. Print example Causes Check procedures/corrective measures Adhesion of oxide to main charger Remove the drum unit (See page 1-5-12). Slide the charger wire. cleaner (green) left and right 2 or 3 times to clean the charger wire, then return it to its original position (CLEANER HOME POSITION).

  • Page 49: Dirt On The Top Edge Or Back Of The Paper

    (9) Dirt on the top edge or back of the paper. Print example Causes Check procedures/corrective measures Toner contamination in various parts. Dirty edges and back of the paper can be caused by toner accumulated on such parts as the paper chute guide, paper conveying paths, the bottom of the drum and developing unit, and the fuser unit inlet.

  • Page 50: Electric Problems

    1-4-4 Electric problems Problem Causes Check procedures/corrective measures (1)The machine does No electricity at the power Measure the input voltage. not operate when the outlet. power switch is The power cord is not Check the contact between the power plug and the outlet. turned on.
  • Page 51 Problem Causes Check procedures/corrective measures (6)developing clutch Broken developing clutch Check for continuity across the coil. If none, replace the develop- does not operate. coil. ing clutch. Defective harness between Reinsert the connector. Also check for continuity within the con- developing clutch and con- nector harness.

  • Page 52: Mechanical Problems

    1-4-5 Mechanical problems Problem Causes/check procedures Corrective measures (1)No primary paper Check if the surfaces of the paper feed roller Clean with isopropyl alcohol. feed. is dirty with paper powder. Check if the paper feed roller is deformed. Check visually and replace any deformed paper feed roller (assembly) (See page 1-5- Defective paper feed clutch installation.

  • Page 53: Assembly And Disassembly

    1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Be sure to turn the power switch off and disconnect the power plug before starting disassembly. When handling PWBs, do not touch connectors with bare hands or damage the PWB. Do not touch any PWB containing ICs with bare hands or any object prone to static charge.

  • Page 54: How To Tell A Genuine Kyocera Mita Toner Container

    A black-colored band when seen through the left side window A shiny or gold-colored band when seen through the right side window The above will reveal that the toner container is a genuine Kyocera Mita branded toner container, otherwise, it is a coun- terfeit.

  • Page 55: Outer Covers

    1-5-2 Outer covers (1) Detaching and refitting the top cover Procedure 1. Open the top cover. Top cover 2. Remove two screws. Screw Screw Figure 1-5-3 3. Extract the boss from the hole. 4. Unhook the A hook. Top cover 5.

  • Page 56: Detaching And Refitting The Right And Left Covers

    (2) Detaching and refitting the right and left covers Procedure 1. Remove the top cover (See page 1-5-3). 2. Remove the cassette (See page 1-5-6). 3. Open the front cover. 4. Unhook seven hooks and then remove the right cover. Hooks Right cover Figure 1-5-5...
  • Page 57 5. Unhook seven hooks and then remove the left cover. Left cover Hooks Figure 1-5-6 1-5-5...

  • Page 58: Paper Feed Section

    1-5-3 Paper feed section (1) Detaching and refitting the paper feed roller assembly (paper feed roller and pickup roller) Procedure 1. Remove the cassette. Cassette Figure 1-5-7 2. Slide the feed shaft. 3. While pressing the lever and then remove the paper feed roller assembly.
  • Page 59 4. Check or replace the paper feed roller assembly and refit all the removed parts. Paper feed roller Feed shaft assembly When refitting the paper feed roller assem- bly, be sure to align the paper feed roller pivot with the slotted hole on the feed shaft. Paper feed roller assembly Feed shaft...

  • Page 60: Detaching And Refitting The Retard Roller Assembly

    (2) Detaching and refitting the retard roller assembly Procedure 1. Remove the cassette (See page 1-5-6). Retard guide 2. Push the bottom plate down until it locks. Hook 3. Unhook two hooks and then remove the retard guide. Hook Cassestte Bottom plate Cassette Hook...
  • Page 61 5. Check or replace the retard roller assembly and refit all the removed parts. Retard roller Caution: Before refitting the retard roller assembly assembly, firmly install the spring onto the projection of the retard roller assembly. Projection Spring Figure 1-5-12 1-5-9...

  • Page 62: Detaching And Refitting The Mp Paper Feed Roller

    (3) Detaching and refitting the MP paper feed roller Procedure 1. Open the front cover. 2. Pull the MP feed holder (lever) down ( ). 3. Slide the MP feed holder ( ). 4. Remove the MP paper feed roller ( ). MP paper feed roller Front cover MP paper feed roller...

  • Page 63: Developing Section

    1-5-4 Developing section (1) Detaching and refitting the developing unit Procedure 1. Open the top cover. Top cover 2. Open the front cover. 3. Remove the developing unit (with toner con- tainer). 4. Check or replace the developing unit and refit all the removed parts.

  • Page 64: Drum Section

    1-5-5 Drum section (1) Detaching and refitting the drum unit Procedure 1. Remove the developing unit (See page 1-5- 11). 2. Remove the drum unit. 3. Check or replace the drum unit and refit all the removed parts. Drum unit Figure 1-5-16 1-5-12...

  • Page 65: Detaching And Refitting The Main Charger Unit

    (2) Detaching and refitting the main charger unit Procedure 1. Remove the drum unit (See page 1-5-12). 2. Remove the tape. 3. While pushing on the main plate ( ), slide the main charger unit ( ). Tape Main charger unit Drum unit Main charger unit Main plate...

  • Page 66: Transfer/Separation Section

    1-5-6 Transfer/separation section (1) Detaching and refitting the transfer roller Procedure 1. Remove the developing unit (See page 1-5- 11). 2. Remove the drum unit (See page 1-5-12). 3. Slide the paper chute guide and unhook the hooks. 4. Remove the paper chute guide. Paper chute guide Paper chute guide Hook...
  • Page 67 5. Remove the transfer roller’s shaft from the Shaft both transfer bushes. 6. Remove the gear Z16 from the transfer roller. Transfer roller Shaft Transfer bush Transfer bush Transfer roller Gear Z16 Figure 1-5-20 7. Check or replace the transfer roller and refit all the removed parts.

  • Page 68: Fuser Section

    1-5-7 Fuser section (1) Detaching and refitting the fuser unit Procedure 1. Remove the outer covers (See page 1-5-3). 2. Remove two connectors. 3. Release the wires form wire clamps. Wires Wire clamps Connector (Fuser heater lamp) Connector (Fuser thermistor) Figure 1-5-22 4.
  • Page 69 5. Open the rear cover and then remove the rear cover. Rear cover Figure 1-5-24 6. Remove two screws and then remove the fuser unit. 7. Check or replace the fuser unit and refit all the removed parts. Fuser unit Screw Screw Figure 1-5-25...

  • Page 70: Switching The Fuser Pressure

    (2) Switching the fuser pressure The fuser pressure may be decreased to suppress the print quality problems such as paper creases and curls. It must be cautioned that decreasing the fuser pressure could cause loose toner fusing. Procedure 1. Remove the cassette (See page 1-5-6). 2.

  • Page 71: Pwbs

    1-5-8 PWBs (1) Detaching and refitting the control PWB Procedure 1. Remove the right cover (See page 1-5-4). 2. Remove the thirteen connectors form the control PWB. 3. Release the wires from the wire clamps. Control PWB Wire clamps Connectors (Twelve) Connector Control PWB...
  • Page 72 4. Remove five screws. 5. Remove the four connectors form the con- Connectors trol PWB. (Four) 6. Unhook the hook and then remove the con- trol PWB assembly. Control PWB Hook Screw Screws Screws Control PWB assembly Figure 1-5-28 1-5-20...
  • Page 73 7. Remove five screws and then remove the control PWB. Screw 8. Check or replace the control PWB and refit all the removed parts. Screw Screw To replace the control PWB, remove the EEPROM (U300) from the old control PWB and mount it to the new control PWB.

  • Page 74: Detaching And Refitting The Power Source Pwb

    (2) Detaching and refitting the power source PWB Procedure 1. Remove the left cover (See page 1-5-4). 2. Remove four connectors. Connector Connector Connector Connector Figure 1-5-30 3. Remove four P tight screws, two screws and ground terminal. 4. Remove the power source PWB assembly from the high voltage PWB’s connector.
  • Page 75 5. Remove four screws and then remove the Screws power source plate from the power source PWB. 6. Check or replace the power source PWB and refit all the removed parts. Caution: The power source film must be installed in the specified position. Screws Power source PWB Power source film...

  • Page 76: Detaching And Refitting The High Voltage Pwb

    (3) Detaching and refitting the high voltage PWB Procedure 1. Remove the developing unit (See page 1-5- 11). 2. Remove the drum unit (See page 1-5-12). 3. Remove the cassette (See page 1-5-6). Stop ring 4. Remove the outer covers (See page 1-5-3). 5.
  • Page 77 11. Remove four screws. 12. Unhook three hooks and then remove the lower base cover. Lower base cover Hook Hook Hook Screws Screws Lower base cover Figure 1-5-35 1-5-25...
  • Page 78 13. Remove the spring. 14. Remove the cassette pin. Cassette pin Spring Figure 1-5-36 15. Remove two connectors and then remove the high voltage PWB. 16. Remove the cassette pin holder from the high voltage PWB. High voltage Cassette pin High voltage PWB holder YC202...
  • Page 79 17. Check or replace the high voltage PWB and refit all the removed parts. When refitting the high voltage PWB, be careful about following points. High voltage PWB - Position the ground plate so that it is atop the high voltage PWB. - Each interface is firmly in contact with each Ground plate spring.

  • Page 80: Others

    1-5-9 Others (1) Detaching and refitting the main motor Procedure 1. Remove the right cover (See page 1-5-4). 2. Remove the connector. Connector Figure 1-5-39 3. Remove the M3 screw and two M4 screws. 4. Remove the main motor. 5. Check or replace the main motor and refit all the removed parts.

  • Page 81: Detaching And Refitting The Laser Scanner Unit

    (2) Detaching and refitting the laser scanner unit Procedure 1. Remove the right cover (See page 1-5-4). 2. Remove the connector from the control PWB. 3. Release the wire clamp. 4. Draw in the connector inside. Connector Control PWB Wire clamp Connector Figure 1-5-41 1-5-29...
  • Page 82 5. Remove four screws and then remove the laser scanner unit. 6. Check or replace the laser scanner unit and Screws refit all the removed parts. Screws Laser scanner unit Figure 1-5-42 1-5-30...

  • Page 83: Detaching And Refitting The Eraser Lamp (Pwb)

    (3) Detaching and refitting the eraser lamp (PWB) Procedure 1. Remove the laser scanner unit (See page 1- 5-29). 2. Remove the connector. 3. Slide the eraser holder. 4. Unhook the hooks and then remove the eraser holder. Connector Eraser holder Eraser holder Hooks Hooks...

  • Page 84: Direction Of Installing The Left Cooling Fan Motor And Right Cooling Fan Motor

    (4) Direction of installing the left cooling fan motor and right cooling fan motor When detaching or refitting the left cooling fan motor or right cooling fan motor, be careful of the airflow direction (intake or exhaust). Right cooling Left cooling fan motor fan motor Intake...

  • Page 85: Downloading Firmware

    1-6 Firmware 1-6-1 Downloading firmware (1) Firmware files Firmware files are named after the following codes: Firmware file name example Engine firmware DL_E N G N . 2 H 4 Master download file S2H4 _ 1 0 0 0 0 0 0 0 2 4 . x Extention Software ID Build number...

  • Page 86: Downloading The Firmware From The Usb Memory

    (2) Downloading the firmware from the USB memory To download data written in a USB memory to the printer, proceed as explained in this section. CAUTION Downloading firmware takes several minutes. Do not turn power off during downloading. If downloading is interrupted by an accidental power failure, etc., the control PWB may have to be replaced.
  • Page 87 10. Turn printer power off. 11. Remove the USB memory from USB mem- ory slot. 12. Turn printer power on. 13. Print the service status page to check that the firmware version has been updated. (See page P.1-3-7) USB memory slot USB memory Figure 1-6-4...

  • Page 88: Downloading The Firmware From The Memory Card

    (3) Downloading the firmware from the memory card To download data written in a memory card (CompactFlash) to the printer, proceed as explained in this section. CAUTION Downloading firmware takes several minutes. Do not turn power off during downloading. If downloading is interrupted by an accidental power failure, etc., the control PWB may have to be replaced.
  • Page 89 8. Remove the formatted memory card from the memory card slot. Memory card Figure 1-6-7 Adapter 9. Insert the memory card to the PC's slot or to (Memory card reader) the adaptor. 10. Copy the firmware files to download to the root directory of the memory card.
  • Page 90 13. Turn printer power on. Message display 14. When message display (1) is displayed to detect firmware in the memory card. supervisor mode 15. Message display (2) is displayed during downloading. 16. When message display (3) is displayed to supervisor mode indicate downloading is finished.

  • Page 91: Paper Feed/Conveying Section

    2-1 Mechanical Construction 2-1-1 Paper feed/conveying section Paper feed/conveying section consists of the paper feed unit that feeds paper from the cassette and the MP tray paper feed unit that feeds paper from the MP tray, and the paper conveying section that conveys the fed paper to the transfer/ separation section.

  • Page 92: Mp Tray Paper Feed Section

    (2) MP tray paper feed section Figure 2-1-3 MP tray paper feed section MP paper feed roller MPF frame MPF separation pad MPF guide R/L MPF separator (10) MPF base MPF bottom plate (11) MPF middle tray MPF friction pad (12) MPF upper tray MP paper sensor (13) MPF turn guide...

  • Page 93: Paper Conveying Section

    (3) Paper conveying section Figure 2-1-5 Paper conveying section Lower registration roller Upper registration roller Registration sensor Actuator (registration sensor) Feed pulley Control PWB MMOTRDYN YC331-3 MOTCLK YC331-4 Main motor REMOTEN YC331-5 REGDRN Registration YC334-2 clutch High voltage PWB Registration REGN sensor YC337-11...

  • Page 94: Drum Section

    2-1-2 Drum section (1) Drum section The durable layer of organic photoconductor (OPC) is coated over the aluminum cylinder base. The OPC tend to reduce its own electrical conductance when exposed to light. After a cyclic process of charging, exposure, and development, the electrostatic image is constituted over the OPC layer.

  • Page 95: Main Charger Unit

    (2) Main charger unit As the drum rotates in a “clean (neutral)” state, its photoconductive layer is given a uniform, positive (+) corona charge dis- persed by the main charger wire. Due to high-voltage scorotron charging, the charging wire can get contaminated by oxi- dization after a long run.

  • Page 96: Expose Section

    2-1-3 Expose section (1) Laser scanner unit The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser beam (780 nm wavelength) beam is dispersed as the polygon motor revolves to reflect the laser beam over the drum.
  • Page 97 Figure 2-1-11 Laser scanner unit Polygon motor (mirror) Laser diode (APC PWB) Collimator lens Cylindrical lens F-θ lens F-θ lens PD mirror SOS lens Pin photo diode sensor (PD PWB) (10) LSU mirror 2-1-7...

  • Page 98: Developing Section

    2-1-4 Developing section The latent image constituted on the drum is developed into a visible image. The developing roller contains a 3-pole (S-N- S) magnet roller and an aluminum cylinder rotating around the magnet roller. Toner attracts to the magnet sleeve since it is powdery ink made of black resin bound to iron particles.

  • Page 99: Transfer/Separation Section

    2-1-5 Transfer/separation section The transfer/separation section consists of the transfer roller, discharger brush and paper chute guide. A high voltage gen- erated by the high voltage PWB is applied to the transfer roller for transfer charging. Paper after transfer is separated from the drum.

  • Page 100: Cleaning Section

    2-1-6 Cleaning section After the transferring process, the drum needs to be physically cleaned of toner which is residual after the development process. The cleaning blade is constantly pressed against the drum and scrapes the residual toner off to the sweep roller. The waste toner is collected at the output end of the sweep roller and sent back to the toner container, into the waste toner reservoir.

  • Page 101: Fuser Section

    2-1-7 Fuser section The toner on the paper is molten and pressed into the paper as it passes between the heat roller and the press roller in the fuser unit. The heat roller has a heater lamp inside which continuously turns on and off by the fuser thermistor to maintain the constant temperature onto the heat roller surface.
  • Page 102 Fuser unit High Power Control PWB voltage source PWB Fuser thermal cutout HEATN YC337-5 YC103-6 YC102-1 SLEEP YC337-6 YC103-7 ZCROSS YC102-3 YC337-3 YC103-8 Fuser heater lamp Fuser thermistor THERM YC337-16 Figure 2-1-19 Fuser section block diagram 2-1-12...

  • Page 103: Paper Exit Section

    2-1-8 Paper exit section The paper exit section transports the paper which passed the fuser unit towards the top tray. The paper which passed through the fuser unit turns on the actuator (exit sensor) in the fuser unit, and is led by the guide comprised of the rear cover, frame and the FD cover guide, finally reaching the FD roller.
  • Page 104 Fuser unit Control PWB EXITN YC333-3 Exit sensor Figure 2-1-21 Paper exit section block diagram 2-1-14...

  • Page 105: Duplex/Conveying Section

    2-1-9 Duplex/conveying section The duplex/conveying section consists of conveying path which sends the paper sent from the paper exit section to the paper feed/conveying section when duplex printing. Figure 2-1-22 Duplex/conveying section DU cover B DU holder Middle pulley B DU roller DU cover A Lower base cover...
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  • Page 107: Electrical Parts Layout

    2-2 Electrical Parts Layout 2-2-1 Electrical parts layout (1) PWBs Machine left Machine inside Machine right Figure 2-2-1 PWBs Control PWB ..........Main controller: Controls the software such as the print data processing and provides the interface with computers. Engine: Controls printer hardware such as high voltage/bias output con- trol, paper conveying system control, and fuser temperature control, etc.

  • Page 108: Switches And Sensors

    (2) Switches and sensors Machine left Machine inside Machine right Figure 2-2-2 Switches and sensors Power switch..........Turns ON/OFF the AC power source. Interlock switch ..........Shuts off 24 V DC power line when the top cover is opened. Cassette switch..........Detects open/close cassette. Registration sensor ........

  • Page 109: Other Electrical Components

    (3) Other electrical components Machine left Machine inside Machine right Figure 2-2-3 Other electrical components Main motor ............Drives the paper feed/conveying section and fuser unit. Polygon motor........... Drives the polygon mirror. Right cooling fan motor ........Cools the interior of machine. Left cooling fan motor ........
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  • Page 111: Power Source Pwb

    2-3 Operation of the PWBs 2-3-1 Power source PWB Power source PWB Left +24V1 cooling fan motor ZCROSS Zero cross signal circuit Power switch SLEEP AC input Switching +24V1 regulator circuit +24V2 Fuser heater Interlock lamp control switch HEATN circuit +3.3V2 THERM Fuser unit...
  • Page 112 YC104 YC105 YC102 YC103 YC101 Figure 2-3-2 Power source PWB silk-screen diagram Connector Signal Voltage Description YC101 LIVE 120 V AC AC power input Connected 220 - 240 V AC to the AC NEUTRAL 120 V AC AC power input inlet 220 - 240 V AC YC102...

  • Page 113: Control Pwb

    2-3-2 Control PWB Control PWB Engine Main controller Laser scanner unit I/F USB I/F (Device) Duplex solenoid USB I/F Registration clutch (Host) MP paper feed Operation solenoid panel PWB I/F Paper feed clutch Network I/F +3.3 V Developing clutch Memory card I/F Paper feed sensor Engine I/F MP paper feed...
  • Page 114 YC342 YC343 U300 YC333 Figure 2-3-4 Control PWB silk-screen diagram 2-3-4...
  • Page 115 Connector Signal Voltage Description VBUS 5 V DC 5 V DC power source Connected HUSBDN (Differential signal) Data signal to the opera- HUSBDP (Differential signal) Data signal tion panel 5 V DC 5 V DC power source Connected +3.3V1 3.3 V DC 3.3 V DC power source to the opera- FPDAT...
  • Page 116 Connector Signal Voltage Description YC335 +24V3 24 V DC 24 V DC power source Connected MPFDRN 0/24 V DC MP paper feed solenoid: On/Off to the MP paper feed solenoid YC337 +24V1 24 V DC 24 V DC power source Connected +3.3V2 3.3 V DC...
  • Page 117 Connector Signal Voltage Description YC344 +24V3 24 V DC 24 V DC power source Connected PGND Ground to the PFSI 0/3.3 V DC (pulse) Serial communication data input signal optional PFSO 0/3.3 V DC (pulse) Serial communication data output signal paper feeder PFSEL 0/3.3 V DC...
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  • Page 119: Appendixes

    2-4 Appendixes 2-4-1 Appendixes (1) Wiring diagram 2-4-1...

  • Page 120: Repetitive Defects Gauge

    (2) Repetitive defects gauge First occurrence of defect [24.99 mm/1"] Upper registration roller [37.68 mm/1 "] Lower registration roller [45.216 mm/1 "] Transfer roller [62.8 mm/2 "] Developing roller (developing unit) [73.162 mm/2 "] Heat roller (fuser unit) [78.5 mm/3 "] Press roller (fuser unit) 1/16 [94 mm/3...

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