Olivetti d-Color P2026 Service Manual
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Olivetti d-Color P2026 Service Manual

Olivetti d-Color P2026 Service Manual

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SERVICE MANUAL

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Summary of Contents for Olivetti d-Color P2026

  • Page 1 P2021 d-Color P2026 SERVICE MANUAL...
  • 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.
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  • Page 4 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 5 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 6 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 7 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 8 • 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......................•...
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  • Page 10: Table Of Contents

    CONTENTS 1-1 Specifications 1-1-1 Specifications ........................... 1-1-1 1-1-2 Parts names ..........................1-1-3 (1) Machine (front side) ....................... 1-1-3 (2) Machine (rear side) ........................ 1-1-4 (3) Operation panel ........................1 -1-5 1-1-3 Machine cross section ......................1-1-6 1-2 Installation 1-2-1 Installation environment ......................1-2-1 1-2-2 Unpacking ..........................
  • Page 11 1-5 Assembly and disassembly 1-5-1 Precautions for assembly and disassembly ................1-5-1 (1) Precautions ..........................1-5-1 (2) Drum ............................1-5-1 (3) Toner ............................. 1-5-1 1-5-2 Outer covers ........................1-5-3 (1) Detaching and refitting the top cover ..................1-5-3 (2) Detaching and refitting the right rear cover, right cover and right lower cover ...... 1-5-5 (3) Detaching and refitting the left rear cover, left cover and left lower cover ......
  • Page 12 2-1-2 Drum section ..........................2-1-8 2-1-3 Developing section ........................2-1-10 2-1-4 Laser scanner section ....................... 2-1-12 2-1-5 Transfer/Separation section ...................... 2-1-14 (1) Intermediate transfer unit section .................... 2-1-14 (2) Secondary transfer roller section ..................... 2-1-16 2-1-6 Fuser section ..........................2-1-17 2-1-7 Eject/Feedshift section ......................
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  • Page 14: Specifications

    1-1-1 Specifications 1-1 Specifications Specifications Item 21/23 ppm model (A4/Letter) 26/28 ppm model (A4/Letter) Type Desktop Printing method Electrophotography by semiconductor laser, tandem (4) drum system Cassette 60 to 163 g/m Paper weight MP tray 60 to 220 g/m Plain, Recycled, Preprinted, Bond, Color (Colour), Prepunched, Cassette Letterhead, Thick, High quality, Custom 1 to 8 (Duplex: Same as simplex) Paper type...
  • Page 15 Specifications Item 21/23 ppm model (A4/Letter) 26/28 ppm model (A4/Letter) Separation system Small diameter separation Cleaning system Drum: Counter blade Charge erasing system Exposure by cleaning lamp (LED) Heat and pressure fusing with the heat roller and the press roller Heat source: halogen heater Fusing system Abnormally high temperature protection devices: thermostat...

  • Page 16: Parts Names

    1-1-2 Parts names (1) Machine (front side) Figure 1-1-1 1. Operation panel 8. Toner container K 2. Top tray (Top cover) 9. Toner container M 3. Paper stopper 10. Toner container C 4. MP (Multi-Purpose) tray 11. Toner container Y 5.

  • Page 17: Machine (Rear Side)

    (2) Machine (rear side) Figure 1-1-2 15. Rear cover 21. Power cord connector 16. Rear cover lever 22. Network indicators 17. IF cover 23. Network interface connector 18. Memory cover 24. USB interface connector 19. Power cord cover 25. USB memory slot 20.

  • Page 18: Operation Panel

    (3) Operation panel Figure 1-1-3 1. Message display 2. Ready indicator 3. Data indicator 4. Attention indicator 5. Cursor keys 6. MENU key 7. Cancel key 8. OK key 9. GO key 1-1-5...

  • Page 19: Machine Cross Section

    1-1-3 Machine cross section 26/28 ppm model 21/23 ppm model Paper path Figure 1-1-4 1. Cassette paper feed section 8. Drum unit C 15. Primary transfer section 9. Drum unit Y 16. Secondary transfer/Separa- 2. MP tray paper feed section 3.

  • Page 20: Installation Environment

    1-2-1 Installation environment 1-2 Installation 1. Temperature: 10 to 32.5°C/50 to 90.5°F 2. Humidity: 15 to 80% RH 3. Power supply: 120 V AC, 8.5 A 220 - 240 V AC, 4.5 A 4. Power source frequency: 50 Hz ±2%/60 Hz ±2% 5.

  • Page 21: Unpacking

    1-2-2 Unpacking Unpacking 120V AC model Figure 1-2-2 1. Machine 7. Bottom left pad 13. Toner container Y 2. Plastic bag 8. Top right pad 14. Waste toner box 3. Bottom spacer 9. Top left pad 15. Power cord 4. Machine cover 10.
  • Page 22 220-240V AC model Figure 1-2-3 1. Machine 10. Bottom pad 19. Toner container Y 2. Plastic bag 11. Top front right pad 20. Front container spacer 3. Bottom spacer 12. Top front left pad 21. Left container spacer 22. Back container spacer 4.
  • Page 23 Removing the tapes and pads 1. Remove four tapes. Tape Tape Tape Tape Figure 1-2-4 2. Remove the tape. Tape Figure 1-2-5 1-2-4...
  • Page 24 3. Open the top cover. 4. Remove pads A and B. Top cover Pad B Pad A Figure 1-2-6 Installing the toner containers 1. Slide the release lever backward. Release lever Figure 1-2-7 1-2-5...
  • Page 25 2. Facing the toner feed slot up and shake the toner container 5 to 6 times. Toner feed slot Toner container Figure 1-2-8 3. Install toner containers (K, M, C, Y). Toner 4. Close the top cover. Toner container K Toner container M container C...
  • Page 26 Installing the waste toner box 1. Open the waste toner cover. 2. Open the cap of the waste toner box. 3. Install the waste toner box. 4. Close the waste toner cover. Waste toner cover Waste toner box Figure 1-2-10 Loading paper 1.
  • Page 27 4. Load the paper in the cassette. 5. Turn the paper size dial so that it shows the paper size you are going to use. 6. Insert the cassette. Size dial Paper Cassette Figure 1-2-12 Connecting the interface cable 1. Connect the interface cable to the machine and PC or network.
  • Page 28 Connecting the power cord 1. Remove the power cord cover. 2. Connect the power cord to the machine and the wall outlet. 3. Refit the power cord cover. 4. Press the main power switch to turn power on. 5. Installing the printer driver (refer to operation guide).

  • Page 29: Installing The Expansion Memory (Option)

    1-2-3 Installing the expansion memory (option) Procedure 1. Turn off the main power switch. Caution: Do not insert or remove expansion memory while machine power is on. Doing so may cause damage to the machine and the expansion memory. 2. Remove the memory cover. Memory cover Figure 1-2-15 3.
  • Page 30 4. Insert the expansion memory into the Expansion memory memory socket so that the notches on the memory align with the correspond- ing protrusions in the slot. 5. Close the bracket. 6. Refit the memory cover. 7. Print a status page to check the mem- ory expansion (see page 1-3-2).

  • Page 31: Installing The Hard Disk (Option For 26/28 Ppm Model Only)

    1-2-4 Installing the hard disk (option for 26/28 ppm model only) Procedure 1. Turn off the main power switch. Caution: Do not insert or remove hard disk while machine power is on. Doing so may cause damage to the machine and the hard disk. 2.

  • Page 32: Installing The Network Interface Card (Option)

    1-2-5 Installing the network interface card (option) Procedure 1. Turn off the main power switch. 2. Remove the IF cover. 3. Remove two pins and then remove the slot cover. IF cover Slot cover Figure 1-2-20 4. Insert the network interface card into the interface slot.
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  • Page 34: Service Mode

    1-3-1 Service mode 1-3 Service Mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a service mode Start Press the Menu key. The Mode Selection Menu appears. Select [Adjust/Maintenance] using the cursor up/down keys The Adjust/Maintenance menu appears.

  • Page 35: Description Of Service Mode

    (2) Description of service mode Service items Description Service Status Printing a status page for service purpose Description Prints a status page for service purpose. The status page includes various settings and service cumulative. Purpose To acquire the current printing environmental parameters and cumulative information. Method 1.
  • Page 36 Service items Description Service status page (1) Service Status Page 28/07/2010 16:39 Printer (4)(5) [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Firmware version 2KV_2000.000.000 2010.07.28 Controller Information Memory status Standard Size 128.0 KB 128.0 KB Option Slot 256.0 KB Total Size Time (10) Local Time Zone +01:00 Tokio 28/07/2010 16:39 (11)
  • Page 37 Service items Description Service status page (2) Service Status Page Printer 28/07/2010 16:39 Firmware version 2KV_2000.000.000 2010.07.28 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Engine Information Send Information (21) (23) NVRAM Version _1F31225_1F31225 Date and Time 10/07/28 16:39 00:C0:EE:D0:01:0D (22) (24) MAC Address Address (25) (26) (27) 100/100...
  • Page 38 Service items Description Detail of service status page Description Supplement Firmware version System date Engine soft version Engine boot version Operation panel mask version Machine serial number Standard memory size Optional memory size Total memory size (10) Local time zone (11) Report output date Day/Month/Year hour : minute...
  • Page 39 Service items Description Description Supplement (22) Mac address (23) The last sent date and time (24) Transmission address (25) Destination information (26) Area information (27) Margin settings Top margin/Left margin (28) Top offset for each paper source MP tray/Paper feeder 1/Paper feeder 2/ Paper feeder 3/Duplex/Page rotation (29) Left offset for each paper source...
  • Page 40 Service items Description Description Supplement (45) Media type attributes Weight settings Fuser settings 1 to 28 (Not used: 18, 19, 20) 0: Light 0: High 1: Normal 1 1: Middle 2: Normal 2 2: Low 3: Normal 3 3: Vellum 4: Heavy 1 Duplex settings 5: Heavy 2...
  • Page 41 Service items Description Network Status Printing a status page for network Description Prints a status page for network. Purpose To acquire the detailed network setting information. Method 1. Enter the Service Setting menu. 2. Select [Print Network Status Page] using the cursor up/down keys. 3.
  • Page 42 Service items Description Test Page Printing a test page Description Four colors are printed respectively with halftones of three different levels. Purpose To check the activation of the developer and drum units of four colors. Method 1. Enter the Service Setting menu. 2.
  • Page 43 Service items Description Maintenance Counter reset for the maintenance kit (26/28 ppm model only) Description The "Install MK" message means that maintenance kit should be replaced at 200,000 pages of printing. The interval counter must be manually reset using this service item. Maintenance kit MK-592 (for 120 V specifications) Maintenance kit MK-590 (for 230 V specifications) Maintenance kit includes the following units:...
  • Page 44 Service items Description Developer Entering initial value for replacing the developing unit Setting Description After replacing the developing unit, enter the initial value (6-digit data) assigned on a label attached to the package or developing unit. Purpose To set the initial value after replacing the developing unit. Method 1.
  • Page 45 Service items Description Developer Performing developer refresh Refresh Description The laser output of the image data for developer refreshing is carried out, and operation to exposure, developing, and primary transfer is performed by 10 pages (paper is not fed). Purpose To perform cleaning when faulty images occur and a line appears longitudinally.
  • Page 46 Service items Description LSU Cleaning Performing LSU cleaning Description The LSU cleaning motor drives the cleaning pad which in turn wipes clean the LSU dust shield glass. Purpose To perform cleaning when the printed image is bad and stripes are seen in the vertical direction.
  • Page 47 Service items Description Altitude Setting altitude adjustment adjustment Description Sets the altitude adjustment mode. Purpose Used when print quality deteriorates in an installation at the altitude of 1,500 meters or higher. Method 1. Enter the Service Setting menu. 2. Select [Altitude Adj.] using the cursor up/down keys. 3.

  • Page 48: Printing An Event Log

    (3) Printing an event log Service items Description Printing an 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 diagnostic errors and replacements.
  • Page 49 Service items Description Event log Event Log Printer 28/July/2010 08:40 Firmware version 2KV_2000.000.000 2010.07.28 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Paper Jam Log Service Call Log Count. Event Descriprions Count. Service Code 1876543 0501.01.08.01.01 1881214 01.6000 166554 4020.01.08.01.01 178944 01.2100 4988 0501.01.08.01.01 5296 01.4000 4988 4020.01.08.01.01...
  • Page 50 Service items Description Items Description 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 paper jam.
  • Page 51 Service items Description Items Description (7) Paper Jam 1620: PF feed sensor 2 is turned ON cont. Log 1820: PF feed sensor 3 is turned ON 4002: Registration sensor does not turn ON (Paper feeder 1) 4003: Registration sensor does not turn ON (Paper feeder 2) 4009: Registration sensor does not turn ON (MP tray) 4012: Registration sensor does not turn OFF (Paper feeder 1) 4013: Registration sensor does not turn OFF (Paper feeder 2)
  • Page 52 Service items Description Items Description (7) Paper Jam (d) Detail of paper type (Hexadecimal) cont. Log 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 53 Service items Description Items Description (10) 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. If the with using an occurrence of the unknown toner con-...
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  • Page 55: Paper Misfeed Detection

    1-4-1 Paper misfeed detection 1-4 Troubleshooting (1) Paper misfeed 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 misfeed in the machine, pull out the cassette, open the rear cover or paper conveying unit.

  • Page 56: Paper Misfeed Detection Condition

    (2) Paper misfeed detection condition Machine Sensors Registration sensor MP feed sensor Eject sensor PF feed sensor 1 PF feed sensor 2 PF feed sensor 3 Paper jam location Paper feeder 1 Cassette 1 MP tray Machine inside Fuser/Eject sections Paper feeder 2 Duplex section Cassette 2...
  • Page 57 Code Contents Conditions location* 0100 Controller sequence error Secondary paper feed request given by the con- troller is unreachable. 0105 Registration sensor not Activation of the registration sensor (on/off) is detected undetected for 90 s during printing. 0106 Controller sequence error Paper feeding request for duplex printing given by the controller is unreachable.
  • Page 58 Code Contents Conditions location* 0514 Multiple sheets in cassette 4 PF feed sensor 3 (PFFS3) does not turn off during paper feed from paper feeder 3. 0518 Multiple sheets in duplex The registration sensor (RS) does not turn off dur- section ing paper feed from duplex section.
  • Page 59 Code Contents Conditions location* 4020 Registration sensor remain- The registration sensor (RS) is turned on when the ing jam power is turned on. 4201 Eject sensor non arrival jam The eject sensor (ES) does not turn on during paper feed from cassette. 4202 The eject sensor (ES) does not turn on during paper feed from paper feeder 1.

  • Page 60: 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 61: Self Diagnostic Codes

    (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 0100 Backup memory device Defective flash Replace the main PWB and check for cor- error memory.
  • Page 62 Check procedures/ Code Contents Causes corrective measures 0640 Hard disk error Defective hard Replace the hard disk and check for correct The hard disk cannot be disk. operation. accessed. Defective main Replace the main PWB and check for cor- PWB. rect operation (see page 1-5-29).
  • Page 63 Check procedures/ Code Contents Causes corrective measures 1020 PF lift motor error Defective bottom Check to see if the bottom plate can move (paper feeder 1) plate elevation smoothly and repair it if any problem is When the lift motor is driven, mechanism in the found.
  • Page 64 Check procedures/ Code Contents Causes corrective measures 1040 PF lift motor error Defective bottom Check to see if the bottom plate can move (paper feeder 3) plate elevation smoothly and repair it if any problem is When the lift motor is driven, mechanism in the found.
  • Page 65 Check procedures/ Code Contents Causes corrective measures 1520 PF heater 1 high tempera- Defective connec- Reinsert the connector. Also check for conti- ture error tor cable or poor nuity within the connector cable. If none, (paper feeder 2) contact in the con- replace the cable.
  • Page 66 Check procedures/ Code Contents Causes corrective measures 1600 PF heater 1 low temperature Defective connec- Reinsert the connector. Also check for conti- error (paper feeder 1) tor cable or poor nuity within the connector cable. If none, An external temperature contact in the con- replace the cable.
  • Page 67 Check procedures/ Code Contents Causes corrective measures 1620 PF heater 1 low temperature Defective connec- Reinsert the connector. Also check for conti- error (paper feeder 2) tor cable or poor nuity within the connector cable. If none, An external temperature contact in the con- replace the cable.
  • Page 68 Check procedures/ Code Contents Causes corrective measures 1640 PF heater 1 low temperature Defective connec- Reinsert the connector. Also check for conti- error (paper feeder 3) tor cable or poor nuity within the connector cable. If none, An external temperature contact in the con- replace the cable.
  • Page 69 Check procedures/ Code Contents Causes corrective measures 2100 Developing motor error Defective connec- Reinsert the connector. Also check for conti- The developing motor ready tor cable or poor nuity within the connector cable. If none, input is not given for 5 s dur- contact in the con- replace the cable.
  • Page 70 Check procedures/ Code Contents Causes corrective measures 2340 Fuser pressure release Defective connec- Reinsert the connector. Also check for conti- motor time-out error tor cable or poor nuity within the connector cable. If none, When the fuser pressure contact in the con- replace the cable.
  • Page 71 Check procedures/ Code Contents Causes corrective measures 2610 PF paper feed motor error Defective connec- Reinsert the connector. Also check for conti- (paper feeder 2) tor cable or poor nuity within the connector cable. If none, The drum motor ready input is contact in the con- replace the cable.
  • Page 72 Check procedures/ Code Contents Causes corrective measures 2740 Developing release motor Defective connec- Reinsert the connector. Also check for conti- time-out error tor cable or poor nuity within the connector cable. If none, When the developing release contact in the con- replace the cable.
  • Page 73 Check procedures/ Code Contents Causes corrective measures 4201 Laser output error (black) Defective connec- Reinsert the connector. Also check for conti- The pin photo signal is not tor cable or poor nuity within the connector cable. If none, output from PD PWB K for contact in the con- replace the cable.
  • Page 74 Check procedures/ Code Contents Causes corrective measures 4600 LSU cleaning motor error Defective connec- Reinsert the connector. Also check for conti- When the LSU cleaning motor tor cable or poor nuity within the connector cable. If none, is driven, the motor over-cur- contact in the con- replace the cable.
  • Page 75 Check procedures/ Code Contents Causes corrective measures 5303 Broken cleaning lamp M Defective connec- Reinsert the connector. Also check for conti- wire tor cable or poor nuity within the connector cable. If none, When the cleaning lamp M is contact in the con- replace the cable.
  • Page 76 Check procedures/ Code Contents Causes corrective measures 6020 Abnormally high fuser Deformed connec- See page 1-4-23. thermistor temperature tor pin. The fuser thermistor detects a temperature higher than Defective triac. See page 1-4-23. 240 C/464 F. Shorted fuser Replace the fuser unit (see page 1-5-25). By the activation of the high thermistor.
  • Page 77 Check procedures/ Code Contents Causes corrective measures 6000/ Broken fuser heater wire Deformed connec- If the I/F connector pins of the fuser unit and 6020/ Abnormally high fuser tor pin. the main unit are deformed owing to foreign 6030 thermistor temperature matters, such as paper dusts, replace the Com- Broken fuser thermistor...
  • Page 78 Check procedures/ Code Contents Causes corrective measures 7001 Toner motor K error Defective connec- Reinsert the connector. Also check for conti- When the toner motor K is tor cable or poor nuity within the connector cable. If none, driven, the motor over-current contact in the con- replace the cable.
  • Page 79 Check procedures/ Code Contents Causes corrective measures 7004 Toner motor Y error Defective connec- Reinsert the connector. Also check for conti- When the toner motor Y is tor cable or poor nuity within the connector cable. If none, driven, the motor over-current contact in the con- replace the cable.
  • Page 80 Check procedures/ Code Contents Causes corrective measures 7404 Developing unit Y non- Defective connec- Reinsert the connector. Also check for conti- installing error tor cable or poor nuity within the connector cable. If none, No density detection signal is contact in the con- replace the cable.
  • Page 81 Check procedures/ Code Contents Causes corrective measures 7413 Drum unit M non- installing Installation of Install drum unit M compatible with the spec- error incompatible drum ifications to the machine. The EEPROM of drum PWB unit M. M does not communicate nor- mally.
  • Page 82 Check procedures/ Code Contents Causes corrective measures F020 Main PWB RAM checksum Defective main Turn the main power switch off/on to restart error memory (RAM) on the machine. If the error is not resolved, the main PWB. replace main PWB (see page 1-5-29). Defective Replace the expanded memory (DIMM) (see expanded memory...

  • Page 83: Image Formation Problems

    1-4-3 Image formation problems If the part causing the problem was not supplied, use the unit including the part for replacement. (1) No image (2) No image (3) A specific color (4) The back side (5) Image is too appears (entirely appears (entirely is printed solid.

  • Page 84: No Image Appears (Entirely Black)

    (1) No image appears (entirely white). Print example Causes Check procedures/corrective measures Defective Defective connector cable Reinsert the connector. Also check for conti- transfer or poor contact in the con- nuity within the connector cable. If none, bias output. nector. replace the cable.

  • Page 85: A Specific Color Is Printed Solid

    (3) A specific color is printed solid. Print example Causes Check procedures/corrective measures Defective charger roller unit Replace the drum unit for the color that causes an error which corresponds to the (see page 1-5-20). color causing the problem. Laser of laser scanner unit for Replace the laser scanner unit KM/CY solid color printing is ON.

  • Page 86: The Background Is Colored

    (6) The background is colored. Print example Causes Check procedures/corrective measures Defective color calibration. Perform the color calibration (Refer to opera- tion guide). Defective Defective developing unit. Replace the developing unit for the color that developing causes an error (see page 1-5-18). bias output.

  • Page 87: Streaks Are Printed Horizontally

    (9) Streaks are printed horizontally. Print example Causes Check procedures/corrective measures Dirty or flawed drum. Perform the drum surface refreshing (see page 1-3-13). Flawed drum. Replace the drum unit (see page 1-5-20). Dirty developing section. Clean any part contaminated with toner in the developing section.

  • Page 88: Part Of Image Is Missing

    (13) Offset occurs. Print example Causes Check procedures/corrective measures Defective drum surface charg- Perform the drum surface refreshing (see page 1-3-13). ing. When the problem is not cleared, increase the surface potential by performing the main charger adjustment (see page 1-3-14). Deformed or worn cleaning Replace the drum unit (see page 1-5-20).

  • Page 89: Colors Are Printed Offset To Each Other

    (16) Colors are printed offset to each other. Print example Causes Check procedures/corrective measures Defective color calibration. Perform the color calibration (refer to operation guide). Slip the mirror position of laser Perform the normal color registration. When the problem is scanner unit.

  • Page 90: Electric Problems

    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. No electricity at the Measure the input voltage.
  • Page 91 Problem Causes Check procedures/corrective measures 1. Defective connector Reinsert the connector. Also check for continuity within the Fuser fan motor cable or poor con- connector cable. If none, replace the cable. does not operate. tact in the connector. Fuser fan motor and engine PWB (YC40) 2.
  • Page 92 Problem Causes Check procedures/corrective measures (11) 1. Defective connector Reinsert the connector. Also check for continuity within the MP solenoid does cable or poor con- connector cable. If none, replace the cable. not operate. tact in the connector. MP solenoid and engine PWB (YC4) 2.
  • Page 93 Problem Causes Check procedures/corrective measures (16) 1. Deformed actuator of Check visually and replace if necessary. A message indicat- the interlock switch. ing cover open is displayed when the 2. Defective interlock Replace the interlock switch. switch. top cover or rear cover is closed.

  • Page 94: Mechanical Problems

    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 primary paper ers are dirty with paper powder.
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  • Page 96: Precautions For Assembly And Disassembly

    1-5-1 Precautions for assembly and disassembly 1-5 Assembly and disassembly (1) Precautions Be sure to turn the power switch off and disconnect the power plug before starting disassembly. When handling PWBs (printed wiring boards), do not touch parts with bare hands. The PWBs are susceptible to static charge.

  • Page 97: Outer Covers

    1-5-2 Outer covers (1) Detaching and refitting the top cover Procedure 1. Open the paper conveying unit. 2. Release the hook and then remove the IF cover. Hook IF cover Paper conveying unit Figure 1-5-3 3. Remove two screws. Screw Screw Screw Screw...
  • Page 98 4. Open the top tray. Hook 5. Remove two screws. 6. Release two hooks and then remove Top cover the top tray. Hook Screw Top tray Screw Figure 1-5-5 1-5-4...

  • Page 99: Detaching And Refitting The Right Rear Cover, Right Cover And Right Lower Cover

    (2) Detaching and refitting the right rear cover, right cover and right lower cover Procedure 1. Remove the top cover (see page 1-5-3). 2. Slide the power source cover backward and then remove it. Power source cover Figure 1-5-6 3. Remove the screw. 4.
  • Page 100 5. Open the memory cover and then remove it. Memory cover Figure 1-5-8 6. Open the waste toner cover. 7. Push the lock release button and then remove the waste toner box. Lock release button Waste toner cover Waste toner box Figure 1-5-9 1-5-6...
  • Page 101 8. Release four hooks (hook A → B→ C). Slide the right cover forward and then remove it. 9. Remove the waste toner cover. Hook B Hook A Hooks C Right cover Waste toner cover Figure 1-5-10 10. Release the hook. Slide the right lower cover forward and then remove it.

  • Page 102: Detaching And Refitting The Left Rear Cover, Left Cover And Left Lower Cover

    (3) Detaching and refitting the left rear cover, left cover and left lower cover Procedure 1. Remove the top cover (see page 1-5-3). 2. Release the hook. Slide the left rear cover upward and then remove it. Hook Left rear cover Left rear cover Figure 1-5-12...
  • Page 103 4. Remove the screw. 5. Release four hooks (hook A → B → C) and then remove the left lower cover. Left lower cover Screw Hook B Hooks C Left lower cover Hook A Figure 1-5-14 1-5-9...

  • Page 104: Detaching And Refitting The Inner Cover

    (4) Detaching and refitting the inner cover Procedure 1. Remove the cassette. Cassette Figure 1-5-15 2. Remove the MP tray. MP tray Figure 1-5-16 1-5-10...
  • Page 105 3. Remove the top cover (see page 1-5-3). 4. Remove the right rear cover, right cover and right lower cover (see page 1-5-5). 5. Remove the left rear cover, left cover and left lower cover (see page 1-5-8). 6. Release four hooks and then remove the inner cover.

  • Page 106: Paper Feed Section

    1-5-3 Paper feed section (1) Detaching and refitting the retard roller unit Procedure 1. Open the paper conveying unit. 2. Pull the middle roller unit forward to the Hook Hook Shafts Shafts hook. 3. While pressing the right and left hooks outwards, unlatch the shaft from the rail and remove the middle roller unit.
  • Page 107 4. Pull the retard cover down and remove. 5. Release two hooks and then remove the retard roller unit. 6. Check or replace the retard roller unit and refit all the removed parts. Retard cover Retard roller unit Hook Hook Figure 1-5-19 1-5-13...

  • Page 108: Detaching And Refitting The Paper Feed Roller Unit

    (2) Detaching and refitting the paper feed roller unit Procedure 1. Remove the retard roller unit (see page 1-5-12). 2. Turn forward the lever of the feed pin to release the lock. 3. Slide the feed pin. Lever Feed pin Feed pin Figure 1-5-20 1-5-14...
  • Page 109 4. Remove the paper feed roller unit. 5. Check or replace the paper feed roller unit and refit all the removed parts. Paper feed roller unit Figure 1-5-21 1-5-15...

  • Page 110: Detaching And Refitting The Mp Paper Feed Roller

    (3) Detaching and refitting the MP paper feed roller Procedure 1. Remove the cassette. 2. Raise the MP tray cover upward. Release two hooks and then remove MP tray cover the MP tray cover. Hook Hook Figure 1-5-22 3. Open the conveying lower cover. Conveying lower cover Figure 1-5-23 1-5-16...
  • Page 111 4. Remove two screws and then remove the MP paper feed lower unit. Screw MP paper feed lower unit Screw Figure 1-5-24 5. Pull the hook forward and then slide the MP feed shaft. 6. Remove the MP paper feed roller. 7.

  • Page 112: Developing Section

    1-5-4 Developing section (1) Detaching and refitting the developing unit Procedure 1. Remove the intermediate transfer unit (see page 1-5-21). 2. Remove drum units (K, M, C, Y). 3. Pinch the lever of developing unit. Lever 4. Remove developing units (K, M, C, Y). Developing unit Developing unit (K,M,C,Y)
  • Page 113 5. Check or replace the developing unit and refit all the removed parts. NOTE: *: Remove the cap before installing the new developing unit. *: When reinstalling the developing unit, developing press it down until the lever of developing unit unit is engaged with the notch.

  • Page 114: Drum Section

    1-5-5 Drum section (1) Detaching and refitting the drum unit Procedure 1. Remove the intermediate transfer unit Drum unit (K,M,C,Y) (see page 1-5-21). 2. Remove drum units (K, M, C, Y). 3. Check or replace the drum unit and refit all the removed parts.

  • Page 115: Transfer/Separation Section

    1-5-6 Transfer/Separation section (1) Detaching and refitting the intermediate transfer unit Procedure 1. Open the top tray and the paper con- veying unit. 2. Remove toner containers (K, M, C, Y). Toner container (K,M,C,Y) Figure 1-5-29 3. Slide the container guide forward and then remove it.
  • Page 116 4. Open the RFID holder. RFID holder Figure 1-5-31 5. Slide the shutter forward and seal the Shutter toner inlet. Screw 6. Remove the screw. Figure 1-5-32 1-5-22...
  • Page 117 7. Remove the intermediate transfer unit. 8. Check or replace the intermediate transfer unit and refit all the removed parts. Intermediate transfer unit Figure 1-5-33 1-5-23...

  • Page 118: Detaching And Refitting The Transfer Roller Unit

    (2) Detaching and refitting the transfer roller unit Procedure 1. Open the paper conveying unit. 2. Release two hooks and then remove the transfer roller unit. 3. Check or replace the transfer roller unit and refit all the removed parts. Transfer roller unit Hook Hook...

  • Page 119: Fuser Section

    1-5-7 Fuser section (1) Detaching and refitting the fuser unit Procedure 1. Open the paper conveying unit. 2. Remove the IF cover (see page 1-5-3). 3. Remove the screw and then fuser wire cover. Fuser wire cover Screw Figure 1-5-35 4.

  • Page 120: Pwbs

    1-5-8 PWBs (1) Detaching and refitting the engine PWB Procedure 1. Remove the top cover (see page 1-5-3). 2. Remove the left rear cover and left cover (see page 1-5-8). 3. Remove all connectors from the engine PWB. Engine PWB YC26 YC37YC19YC38 YC31 YC12...
  • Page 121 4. Remove three screws and then remove the engine PWB. 5. Check or replace the engine PWB and refit all the removed parts. *: To replace the engine PWB, remove the EEPROM (U1) from the old engine PWB and mount it to the new engine PWB. Screw Screw Screw...

  • Page 122: Detaching And Refitting The Power Source Pwb

    (2) Detaching and refitting the power source PWB Procedure 1. Remove the top cover (see page 1-5-3). 2. Remove the right rear cover, right cover and right lower cover (see page 1-5-5). 3. Remove three screws and then remove the power source shield. Screws A and B are unidentical, there- fore, do not mix up.

  • Page 123: Detaching And Refitting The Main Pwb

    (3) Detaching and refitting the main PWB Procedure 1. Remove the hard disk* or network inter- face card, if installed. *: 26/28 ppm model only 2. Remove the IF cover (see page 1-5-3). 3. Remove two pins and then remove the hard disk or network interface card.
  • Page 124 7. Open the bracket. 8. Slide the plate. Release four hooks and Hook Hook then remove the plate. Hook Hook Bracket Plate Figure 1-5-43 9. Remove the screw and then remove the fuser wire cover. Screw Fuser wire cover Figure 1-5-44 1-5-30...
  • Page 125 10. Remove four screws and then remove the controller shield. Controller shield Screw Screw Screw Screw Figure 1-5-45 11. Open the bracket and then remove it. Bracket Figure 1-5-46 1-5-31...
  • Page 126 12. Remove all connectors from the main PWB. Main PWB YC13 YC14 YC12 Main PWB Figure 1-5-47 13. Remove two screws and then remove the wire holder. Screw Screw Wire holder Figure 1-5-48 1-5-32...
  • Page 127 14. Remove three screws and then remove the main PWB. 15. Check or replace the main PWB and refit all the removed parts. Screw Screw Screw Main PWB Figure 1-5-49 1-5-33...

  • Page 128: Detaching And Refitting The High Voltage Pwb

    (4) Detaching and refitting the high voltage PWB Procedure 1. Remove the top cover (see page 1-5-3). 1. Remove the right rear cover and right cover (see page 1-5-5). 2. Remove the FFC from the high voltage PWB. High voltage PWB Figure 1-5-50 3.

  • Page 129: Drive Section

    1-5-9 Drive section (1) Detaching and refitting the MP feed drive unit Procedure 1. Remove the top cover (see page 1-5-3). 2. Remove the right rear cover and right cover (see page 1-5-5). 3. Remove the left rear cover, left cover and left lower cover (see page 1-5-8).

  • Page 130: Detaching And Refitting The Drum/Developing Drive Unit

    (2) Detaching and refitting the drum/developing drive unit Procedure 1. Remove drum units (K, M, C, Y) and developing units (K, M, C, Y) (see page 1-5-20, 1-5-18). 2. Remove the top cover (see page 1-5-3). 3. Remove the left rear cover, left cover and left lower cover (see page 1-5-8).
  • Page 131 7. Remove five screws and then remove drum/developing drive unit. 8. Check or replace the drum/developing drive unit and refit all the removed parts. Screw Screw Screw Screw Screw Drum/Developing drive unit Figure 1-5-56 1-5-37...

  • Page 132: Detaching And Refitting The Paper Feed Drive Unit

    (3) Detaching and refitting the paper feed drive unit Procedure 1. Remove the top cover (see page 1-5-3). 2. Remove the left rear cover, left cover and left lower cover (see page 1-5-8). 3. Remove connector (YC3) from engine PWB. Engine PWB Engine PWB Figure 1-5-57...

  • Page 133: Detaching And Refitting The Fuser Pressure Drive Unit

    2KT/2KV (4) Detaching and refitting the fuser pressure drive unit Procedure 1. Remove the fuser unit (see page 1-5- 25). 2. Remove the top cover (see page 1-5-3). 3. Remove the left rear cover and left cover (see page 1-5-8). 4.
  • Page 134 5. Remove the developing fan unit (see page 1-5-36). Fuser pressure 6. Remove three screws. drive unit 7. Release two hooks remove the fuser pressure drive unit. Hook 8. Check or replace the fuser pressure drive unit and refit all the removed parts.

  • Page 135: Detaching And Refitting The Middle Transfer Drive Unit

    (5) Detaching and refitting the middle transfer drive unit Procedure 1. Remove the intermediate transfer unit (see page 1-5-21). 2. Remove the top cover (see page 1-5-3). 3. Remove the left rear cover and left cover (see page 1-5-8). 4. Remove the fuser pressure drive unit (see page 1-5-39).
  • Page 136 6. Remove the screw and then remove the ID guide. Screw ID guide Figure 1-5-62 7. Remove three screws and then remove the middle transfer drive unit. 8. Check or replace the middle transfer drive unit and refit all the removed parts.

  • Page 137: Optical Section

    1-5-10 Optical section (1) Detaching and refitting the laser scanner unit Procedure 1. Remove the intermediate transfer unit (see page 1-5-21). 2. Remove drum units (K, M, C, Y) and developing units (K, M, C, Y) (see page 1-5-20, 1-5-18). 3.
  • Page 138 7. Remove the right rear cover, right cover and right lower cover (see page 1-5-5). 8. Remove the controller shield (see page 1-5-29). 9. Remove two connectors (YC6, YC7) from main PWB. Main PWB Main PWB Figure 1-5-66 10. Draw two connectors (YC6, YC7) into the machine inside.
  • Page 139 11. Remove each three screws and then remove laser scanner unit (KM, CY). 12. Check or replace the laser scanner unit and refit all the removed parts. Screw Screw Screw Laser scanner unit (KM) Laser scanner unit (CY) Figure 1-5-68 1-5-45...

  • Page 140: Others

    1-5-11 Others (1) Detaching and refitting the paper conveying unit Procedure 1. Open the rear cover. 2. Remove left and right straps. Rear cover Strap Figure 1-5-69 3. Remove the rear cover unit. Rear cover unit Figure 1-5-70 1-5-46...
  • Page 141 4. Remove the paper conveying unit. Paper conveying unit Figure 1-5-71 1-5-47...

  • Page 142: Detaching And Refitting The Operation Panel

    (2) Detaching and refitting the operation panel Procedure 1. Release two hooks and then remove the operation panel. Hook 2. Remove the FFC from connector. 3. Check or replace the operation panel and refit all the removed parts. Hook Operation panel Connector Operation panel Figure 1-5-72...

  • Page 143: Detaching And Refitting The Power Source Inlet

    (3) Detaching and refitting the power source inlet Procedure 1. Remove the power source PWB (see page 1-5-28). 2. Remove the connector and release the hook and then remove the right fan motor. Connector Hook Right fan motor Figure 1-5-73 3.
  • Page 144 4. Remove the screw and two terminals and then remove the power source inlet. Power source inlet Screw Terminal Terminal Figure 1-5-75 5. Check or replace the power source inlet Power source inlet and refit all the removed parts. *: Before mounting the AC inlet on the main unit, twist the wires 5 to 7 turns.

  • Page 145: Direction Of Installing The Principal Fan Motors

    (4) Direction of installing the principal fan motors When detaching or refitting the fan motors, be careful of the airflow direction (intake or exhaust). Right fan motor (Rating label: Inside) Intake Intake Fuser fan motor (Rating label: Inside) Intake Container fan motor (Rating label: Inside) Left fan motor (Rating label: Inside)

  • Page 146: Upgrading The Firmware

    1-6-1 Upgrading the firmware 1-6 Requirements on PWB Replacement Follow the procedure below to upgrade the firmware of main PWB, engine PWB, optional language, optional paper feeder and color table. Preparation Extract the file that has the download firmware and put them in the USB Memory. Procedure 1.

  • Page 147: Remarks On Engine Pwb Replacement

    1-6-2 Remarks on engine PWB replacement When replacing the engine PWB, remove the EEPROM (U1) from the engine PWB that has been removed and then reattach it to the new engine PWB. EEPROM EEPROM Engine PWB Figure 1-6-2 1-6-2...

  • Page 148: Paper Feed/Conveying Section

    2-1-1 Paper feed/conveying section 2-1 Mechanical Construction 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 149: Cassette Paper Feed Section (26/28 Ppm Model)

    (2) Cassette paper feed section (26/28 ppm model) The cassette can contain 500 sheets. The sheet from the cassette is pulled out by rotation of the pickup roller and sent to the paper conveying section by rotation of the paper feed roller. Also the retard roller prevents mul- tiple feeding of paper.
  • Page 150 *: 26/28 ppm model only EPWB CPWB PAPVOL1 YC21-3 YC1-3 PAPVOL2 PS2* YC21-2 YC1-4 LIFTSEN YC21-4 YC1-2 FEDCLDRN YC3-3 PFCL LMOTDRN YC27-1 FEMOTRDYN YC3-6 FEMOTCLK YC3-7 FEMOTREN YC3-8 Figure 2-1-3 Cassette paper feed section block diagram 2-1-3...

  • Page 151: Mp Tray Paper Feed Section

    (3) MP tray paper feed section The MP tray can contain 50 sheets. Feeding from the MP tray is performed by the rotation of the MP paper feed roller. Also, function of the MPF separation pad prevents paper from multiple feeding. Figure 2-1-4 MP tray paper feed section 1.
  • Page 152 MPSOLDRN YC4-2 MPSOL MPFPAP MPPS YC16-3 EPWB FEMOTRDYN YC3-6 FEMOTCLK YC3-7 FEMOTREN YC3-8 Figure 2-1-5 MP tray paper feed section block diagram 2-1-5...

  • Page 153: Paper Conveying Section

    (4) Paper conveying section The paper conveying section conveys paper to the transfer/separation section as paper feeding from the cas- sette or MP tray, or as paper refeeding for duplex printing. Paper by feeding is conveyed by the middle roller to the position where the registration sensor (RS) is turned on, and then sent to the transfer/separation section by the front registration roller and rear registration roller.
  • Page 154 EPWB REGPAP YC18-3 REGCLDRN YC3-13 MIDCLDRN YC3-11 MPFJAM MPFS YC9-18 YC4-2 RYPWB MPFCLDRN YC3-1 FEMOTRDYN YC3-6 FEMOTCLK YC3-7 YC3-8 FEMOTREN Figure 2-1-7 Paper conveying section block diagram 2-1-7...

  • Page 155: Drum Section

    2-1-2 Drum section The drum section consists of the drum, the charger roller unit, and the cleaning unit, and the drum surface is uniformly charged in preparation for formation of residual image by laser beam. After transfer is complete, toner remaining on the drum surface is chipped off with the cleaning blade and is collected to the waste toner box with the drum screw.
  • Page 156 HVPWB Drum Drum Drum Drum unit Y unit C unit K unit M CL-Y CL-K CL-C CL-M DRPWB-Y DRPWB-C DRPWB-M DRPWB-K EEPROM EEPROM EEPROM EEPROM DRRPWB MOTRDYN YC13-2 SPEEDSEL YC13-3 MOTCLK YC13-4 EPWB MOTEN YC13-5 Figure 2-1-9 Drum section block diagram 2-1-9...

  • Page 157: Developing Section

    2-1-3 Developing section The developing unit consists of the sleeve roller that forms the magnetic brush, the magnet roller, the develop- ing blade and the developing screws that agitate the toner. Also, the toner sensor (TS) checks whether or not toner remains in the developing unit.
  • Page 158 HVPWB Developing Developing Developing Developing unit Y unit C unit unit K TS-Y TS-C TS-M TS-K DEVPWB-Y DEVPWB-C DEVPWB-M DEVPWB-K DRRPWB DLPDIRN DEVRSW DLPCMOTA/B YC14- DEVM YC13- YC13- EPWB Figure 2-1-11 Developing section block diagram 2-1-11...

  • Page 159: Laser Scanner Section

    2-1-4 Laser scanner section The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser beam is dispersed as the polygon motor (PM) revolves to reflect the laser beam over the drum. Various lenses and mirror are housed in the laser scanner unit, adjust the diameter of the laser beam, and focalize it at the drum surface.
  • Page 160 MPWB Laser Laser scanner scanner unit CY unit KM PWB-Y PWB-C PWB-M PWB-K APCPWB-Y APCPWB-C APCPWB-M APCPWB-K PM-CY PM-KM EPWB LSUMOTA, B Figure 2-1-13 Laser scanner unit block diagram 2-1-13...

  • Page 161: Transfer/Separation Section

    2-1-5 Transfer/Separation section The transfer/separation section consists of the intermediate transfer unit section and the secondary transfer roller section. (1) Intermediate transfer unit section The intermediate transfer unit section consists of the transfer cleaning unit, the transfer belt, and the four pri- mary transfer rollers for respective color drums, and forms a full-color toner image by superimposing and transferring single-color toner images formed on each drum onto the transfer belt.
  • Page 162 Intermediate transfer unit IDS1 EPWB HVPWB LEDREFL YC6-4 YC1-2 VOPL YC6-2 YC1-4 YC6-1 YC1-5 VOSL T1CCNT IDS2 T1MCNT LEDREFR CLCNT YC7-4 YC1-2 VOPR YC7-2 YC1-4 T1YCNT YC7-1 YC1-5 VOSR T1KCN IMAMORTEN YC15-3 IMAMORCLK YC15-2 YC15-1 IMAMOTRDYN Figure 2-1-15 Intermediate transfer unit section block diagram 2-1-15...

  • Page 163: Secondary Transfer Roller Section

    (2) Secondary transfer roller section The secondary transfer roller section consists of the secondary transfer roller mounted to the paper conveying unit and the separation brush. To the secondary transfer roller, DC bias is applied from the high voltage PWB (HVPWB).

  • Page 164: Fuser Section

    2-1-6 Fuser section The paper sent from the transfer/separation section is interleaved between the heat roller and the press roller. The heat roller is heated by the fuser heater (FH), and the toner is fused by heat and pressure and fixed onto the paper because the press roller is pressed by the fuser press spring.
  • Page 165 EPWB EJPWB YC1-6 YC2-3 YC19-1 Fuser unit PDIRN PDIRN YC19-3 YC3-2 YC1-4 FTHERM FTHERM IMAMOTREN YC15-3 IMAMOTCLK YC15-2 IMAMOTRDYN YC15-1 EVSW YC102-2 YC102-1 RYPWB HEATRE1 YC9-5 YC4-14 YC1-13 YC103-13 ZCROSS YC103-11 YC4-16 YC1-11 YC9-3 PSPWB Figure 2-1-19 Fuser section block diagram 2-1-18...

  • Page 166: Eject/Feedshift Section

    2-1-7 Eject/Feedshift section The paper eject/feedshift section consists of the conveying path which sends the paper that has passed the fuser section to the top tray or the duplex conveying section. Figure 2-1-20 Eject/Feed shift section 1. Eject roller 7. Eject sensor (ES) 2.
  • Page 167 *: 26/28 ppm model only EPWB EJPWB FDFULL PFS* YC19-5 YC1-2 FUSPAP YC19-4 YC1-3 STDUA YC37-4 STDUB YC37-3 YC37-2 STDUAN YC37-1 STDUBN Figure 2-1-21 Eject/Feed shift section block diagram 2-1-20...

  • Page 168: Duplex Conveying Section

    2KT/2KV 2-1-8 Duplex conveying section The duplex conveying section consists of conveying path which sends the paper sent from the eject/feedshift section to the paper feed/conveying section when duplex printing. Figure 2-1-22 Duplex conveying section 1. Duplex roller L 4. Duplex pulleys 2.
  • Page 169 2KT/2KV EPWB EJPWB FUSPAP YC19-4 YC1-3 STDUA YC37-4 STDUB YC37-3 YC37-2 STDUAN YC37-1 STDUBN Figure 2-1-23 Duplex conveying section block diagram 2-1-22...

  • Page 170: Electrical Parts Layout

    2-2-1 Electrical parts layout 2-2 Electrical Parts Layout (1) PWBs Machine right Machine inside Machine left Figure 2-2-1 PWBs 1. Main PWB (MPWB) ......Controls the software such as the print data processing and provides the interface with computers. 2. Engine PWB (EPWB)......Controls printer hardware such as high voltage/bias output con- trol, paper conveying system control, and fuser temperature con- trol, etc.
  • Page 171 11. Drum PWB M (DRPWB-M) ....Relays wirings from electrical components on the drum unit M. Drum individual information in EEPROM storage. 12. Drum PWB C (DRPWB-C)....Relays wirings from electrical components on the drum unit C. Drum individual information in EEPROM storage. 13.
  • Page 172 List of correspondences of PWB names Name used in service manual Name used in parts list Main PWB (MPWB) PARTS PWB MAIN ASSY SP Engine PWB (EPWB) PARTS PWB ENGINE ASSY SP Power source PWB (PSPWB) PARTS SWITCHING REGULATOR SP High voltage PWB (HVPWB) PARTS HIGH VOLTAGE UNIT SP Operation panel PWB (OPPWB)

  • Page 173: Switches And Sensors

    (2) Switches and sensors 16,17 Machine right Machine inside Machine left Figure 2-2-2 Switches and sensors 1. Main power switch (MSW) ....Turns ON/OFF the AC power source. 2. Interlock switch (ILSW) ......Shuts off 24 V DC power line when the top tray and rear cover are opened.
  • Page 174 22. Toner container sensor (TCS) ....Detects the presence of the toner container. 23. Waste toner cover sensor (WTCS) ..Detects the opening and closing of the waste toner cover. 24. Fuser thermistor (FTH) ......Detects the heat roller temperature. 25.

  • Page 175: Motors

    (3) Motors Machine right Machine inside Machine left Figure 2-2-3 Motors 1. Paper feed motor (PFM) ....... Drives the paper feed section. 2. Lift motor (LM)........Operates the bottom plate. 3. Drum motor (DRM) ....... Drives the drum unit. 4. Developing motor (DEVM) ....Drives the developing unit. 5.

  • Page 176: Others

    (4) Others Machine right Machine inside Machine left Figure 2-2-4 Others 1. Paper feed clutch (PFCL) ..... Primary paper feed from cassette. 2. MP feed clutch (MPFCL)....... Controls the drive of MP conveying section. 3. Registration clutch (RCL)...... Controls the secondary paper feed. 4.
  • Page 177 This page is intentionally left blank. 2-2-8...

  • Page 178: Power Source Pwb

    2-3-1 Power source PWB 2-3 Operation of the PWBs YC104 YC103 YC105 YC101 YC102 Figure 2-3-1 Power source PWB silk-screen diagram 2-3-1...
  • Page 179 Connector Signal Voltage Description YC101 LIVE 120 V AC AC power input 220-240 V AC Connected to NEUTRAL 120 V AC AC power input AC inlet and 220-240 V AC main power switch YC102 NEUTRAL 120 V AC/0 V FH: On/Off 220-240 V AC/0 V Connected to LIVE...

  • Page 180: Engine Pwb

    2-3-2 Engine PWB YC26 YC19 YC24 YC38 YC15 YC37 YC25 YC23 YC11 YC12 YC40 YC39 YC31 YC30 YC28 YC14 YC32 YC22 YC41 YC13 YC18 YC10 YC20 YC16 YC36 YC21 YC34 YC42 YC27 YC35 YC33 YC17 YC29 Figure 2-3-2 Engine PWB silk-screen diagram 2-3-3...
  • Page 181 Connector Signal Voltage Description MPFCLDRN 0/24 V DC MPFCL: On/Off Connected to +24V3 24 V DC 24 V DC power to MPFCL MP feed FEDCLDRN 0/24 V DC PFCL: On/Off clutch, paper feed clutch, +24V3 24 V DC 24 V DC power to PFCL paper feed motor, middle N.C.
  • Page 182 Connector Signal Voltage Description +24V1 24 V DC 24 V DC power from RYPWB Connected to Ground relay PWB Ground Ground Ground +24V3 24 V DC 24 V DC power from RYPWB +24V3 24 V DC 24 V DC power from RYPWB +24V3 24 V DC 24 V DC power from RYPWB...
  • Page 183 Connector Signal Voltage Description YC10 LEDA 3.3 V DC 3.3 V DC power to WTS Connected to LEDK 0/3.3 V DC (pulse) WTS LED emitter signal waste toner PTRE Analog WTS detection signal sensor PTRC 3.3 V DC 3.3 V DC power to WTS YC11 +24V3 24 V DC...
  • Page 184 Connector Signal Voltage Description YC11 BCACNT Developing AC bias control voltage (Cyan) Connected to BMACNT Developing AC bias control voltage high voltage (Magenta) BYACNT Developing AC bias control voltage (Yellow) HVCLKK 0/3.3 V DC (pulse) Developing bias clock signal (Black) BCSCNT Developing sleeve roller bias control voltage (Cyan)
  • Page 185 Connector Signal Voltage Description YC17 CAS2 0/3.3 V DC CSSW (SW2): On/Off Connected to CAS1 0/3.3 V DC CSSW (SW1): On/Off cassette size Ground switch CAS0 0/3.3 V DC CSSW (SW0): On/Off YC18 +3.3V2_LED2 3.3 V DC 3.3 V DC power to RS Connected to Ground registration...
  • Page 186 Connector Signal Voltage Description YC27 LMOTDRN 0/24 V DC LM: On/Off Connected to Ground lift motor YC28 +24V1 24 V DC 24 V DC power to CFM Connected to TCONTFAN 0/12/24 V DC CFM: Full speed/Half speed/Off container fan motor YC29 +24V1 24 V DC...
  • Page 187 Connector Signal Voltage Description YC32 Ground Connected to VREFC Analog APCPWB-C laser power standard voltage laser scanner LONBCN 0/3.3 V DC APCPWB-C sample/hold signal unit CY ENBCN 0/3.3 V DC APCPWB-C laser enable signal PDCN 0/3.3 V DC (pulse) Horizontal synchronizing signal Ground VREFY Analog...
  • Page 188 Connector Signal Voltage Description YC34 TNSENM Analog TS-M detection voltage Connected to ERASECDR 0/24 V DC CL-C: On/Off drum relay TNSENK Analog TS-K detection voltage ERASEMDR 0/24 V DC CL-M: On/Off DLPTHERM Analog DEVTH detection voltage ERASEKDR 0/24 V DC CL-K: On/Off +3.3V2 3.3 V DC...
  • Page 189 Connector Signal Voltage Description YC42 Ground Connected to AIRTEMP Analog OTEMS detection voltage (temperature) outer temper- WETCLK0 0/3.3 V DC (pulse) OTEMS clock signal ature sensor WETCLK1 0/3.3 V DC (pulse) OTEMS clock signal AIRWETOUT Analog OTEMS detection voltage (humidity) 2-3-12...

  • Page 190: Main Pwb

    2-3-3 Main PWB YC14 YC13 2 1 2 6 BAT1 A30B30 YC10 A1B1 YC12 Figure 2-3-3 Main PWB silk-screen diagram 2-3-13...
  • Page 191 Connector Signal Voltage Description YC2-1 3.3 V DC 3.3 V DC power output Connected to 0/3.3 V DC (pulse) Transmission data ethernet 0/3.3 V DC (pulse) Transmission data 0/3.3 V DC (pulse) Received data 0/3.3 V DC (pulse) Received data 3.3 V DC 3.3 V DC power output CAT PHY...
  • Page 192 Connector Signal Voltage Description Ground Connected to +3.3V3 3.3 V DC 3.3 V DC power to APCPWB-M laser scanner PDMN 0/3.3 V DC (pulse) Horizontal synchronizing signal unit KM VDOMP LVDS APCPWB-M video data signal (+) VDOMN LVDS APCPWB-M video data signal (-) Ground +3.3V3 3.3 V DC...
  • Page 193 Connector Signal Voltage Description YC10 Not used Connected to Not used KUIO slot Not used Not used Ground 3.3V 3.3 V DC 3.3 V DC power output 3.3V 3.3 V DC 3.3 V DC power output 0/3.3 V DC (pulse) Address bus signal Ground 0/3.3 V DC (pulse)
  • Page 194 Connector Signal Voltage Description YC10 A19 RESETN 0/3.3 V DC Reset signal Connected to B19 VOLTDETECT Ground KUIO slot A20 D15 0/3.3 V DC (pulse) Data bus signal B20 D14 0/3.3 V DC (pulse) Data bus signal A21 GND Ground B21 D13 0/3.3 V DC (pulse) Data bus signal...

  • Page 195: Drum Relay Pwb

    2-3-4 Drum relay PWB Figure 2-3-4 Drum relay PWB silk-screen diagram 2-3-18...
  • Page 196 Connector Signal Voltage Description TNSENM Analog TS-M detection voltage Connected to ERASECDR 0/24 V DC CL-C: On/Off engine PWB TNSENK Analog TS-K detection voltage ERASEMDR 0/24 V DC CL-M: On/Off DLPTHERM Analog DEVTH detection voltage ERASEKDR 0/24 V DC CL-K: On/Off +3.3V2 3.3 V DC 3.3 V DC power from EPWB...
  • Page 197 Connector Signal Voltage Description Ground Connected to EECLK 0/3.3 V DC (pulse) EEPROM clock signal drum PWB Y ERASEYDR 0/24 V DC CL-Y: On/Off EEDATA 0/3.3 V DC (pulse) EEPROM data signal N.C. Not used +3.3V2 3.3 V DC 3.3 V DC power to DRPWB-Y Ground Ground Ground...

  • Page 198: Appendixes

    2-4-1 Appendixes 2-4 Appendixes (1) Maintenance kits (26/28 ppm model only) Maintenance part name Alternative Parts No. part No. Name used in service Name used in parts list MK-592/Maintenance kit MK-592/MAINTENANCE KIT Developing unit K DV-560 US (K) Developing unit M DV-560 US (M) Developing unit C DV-560 US (C)

  • Page 199: Repetitive Defects Gauge

    (2) Repetitive defects gauge First occurrence of defect 31 mm/1 " Rear registration roller 38 mm/1 " Charger roller 50 mm/1 " Front registration roller 15/16 50 mm/1 " Sleeve roller 15/16 59 mm/2 " Transfer roller 5/16 79/3 " mm Press roller 82/3 "...

  • Page 200: Firmware Environment Commands

    (3) Firmware environment commands The printer maintains a number of printing parameters in its memory. There parameters may be changed per- manently with the FRPO (Firmware RePrOgram) commands. This section provides information on how to use the FRPO command and its parameters using examples. Using FRPO commands for reprogramming firmware The current settings of the FRPO parameters are listed as optional values on the service status page.
  • Page 201 Factory Item FRPO Setting values setting Default emulation mode 6: PCL 6 120V: 9 9: KPDL 220-240V: 6 Carriage-return action 0: Ignores 1: Carriage-return 2: Carriage-return + linefeed Linefeed action 0: Ignores 1: Linefeed 2: Linefeed + carriage-return Automatic emulation switching 0: AES disabled 120V: 1 1: AES enabled...
  • Page 202 2KT/2KV Factory Item FRPO Setting values setting Default cassette 0: MP tray 1: Cassette 1 2: Cassette 2 3: Cassette 3 4: Cassette 4 MP tray paper size 0: Maximum paper size 120V: 6 Same as the R2 values except: 0 220-240V: 8 A4/letter equation 0: Off...
  • Page 203 Factory Item FRPO Setting values setting Font height for the default scal- Integer value in 100 points: 0 to 9 able font * Integer value in points: 0 to 99 decimal value in 1/100 points: 0, 25, 50, 75 Default scalable font * Name of typeface of up to 32 characters, Courier enclosed with single or double quotation marks...
  • Page 204 Factory Item FRPO Setting values setting Paper type for cassettes 2 to 4 Paper feeder (Normal) 1: Plain 3: Preprinted 5: Bond 6: Recycled 9: Letterhead 10: Color 11: Prepunched 17: High quality 21 to 28: Custom1 to 8 Multi purpose feeder 1: Plain 3: Preprinted 4: Label...
  • Page 205 Factory Item FRPO Setting values setting Default operation for PDF direct 0: Enlarges or reduces the image to fit in the printing current paper size. Loads paper from the current paper cassette. 1: Through the image. Loads paper which is the same size as the image.

  • Page 206: Wiring Diagram

    (4) Wiring diagram LSUCM WTCS TM-C TM-M TM-K TM-Y DEVM 1234567 123456 MPFS 1234567 123456 +24V3GNDDRUMMOTRENDRUM MOTCLKSPEEDSELDRUMMOTR 123456 DYNDRUMMOTREV(GND) +24V3GNDDLPMOTRENDLP WSTOPNGND+3.3V2 TCONTNGND+3.3V2_ MPFJAMGND+3.3V2_ MOTCLKDLPMOTRDYNMOTR +5V1FPRSTN+3.3V1FPTXDFP _LED7 LED3 LED5 +24V3TNMCDRN +24V3TNMMDRN +24V3TNMKDRN +24V3TNMYDRN LSUMOTALSUMO RXDGND 123456 KUIO 7654321 123456 Serial I/F 7654321 123456 +24V1/GND...
  • Page 207 PDKN PDPWB-K +3.3V3 VREFK YC31 LONBKN APCPWB-K ENBKN +3.3V3 PDKN PDKN VDOKN VDOKP +3.3V3 PDMN VDOMN VDOMP VREFM 6 LONBMN 7 ENBMN 8 APCPWB-M PDMN 9 LSUTHERMM 10 PDPWB-M PDMN +3.3V3 POLCLK1 MPWB EPWB POLRDYN1 ITEMS POLONN1 PM-KM +24V3 PDPWB-C PDCN +3.3V3 VREFC...

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