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Oki C9500dxn Maintenance Manual

Color led page printer
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Download this manual See also: Reference Manual, Configuration Manual
Oki Data CONFIDENTIAL
C9500 /C9300
Color LED Page Printer
MAINTENANCE
MANUAL
ODA/OEL/INT
2002-10-23 Rev.1
1 / 220
41956001TH Rev.1

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Summary of Contents for Oki C9500dxn

  • Page 1: Maintenance Manual

    Oki Data CONFIDENTIAL C9500 /C9300 Color LED Page Printer MAINTENANCE MANUAL ODA/OEL/INT 2002-10-23 Rev.1 1 / 220 41956001TH Rev.1...
  • Page 2 Oki Data CONFIDENTIAL Document Revision History Corrected items Person in Rev.No. Date change Page Description of change 2002-10-23 41956001TH Rev.1...
  • Page 3 Although reasonable efforts have been taken in the preparation of this manual to assure its accuracy, this manual may still contain some errors and omissions. OKI will not be liable for any damage caused or alleged to be caused, by the customer or any other person using this maintenance manual to repair, modify, or alter C9500/C9300 in any manner.

  • Page 4: Table Of Contents

    Oki Data CONFIDENTIAL CONTENTS 1. SPECIFICATIONS .................... 7 Basic System Configuration ..................... 7 Printer Engine Specifications ................... 8 Option Configuration ......................9 Specifications ......................... 11 2. OPERATION DESCRIPTION ................. 12 Main Control Board (TIG-PWB) ..................16 Engine Control Board (K7N PWB) ................. 18 Power Units ........................
  • Page 5 Oki Data CONFIDENTIAL 3.3.17 Registration Roller Assy (B) ................72 3.3.18 Registration Clutch / Registration Motor Assy ..........73 3.3.19 ID Cooling Fan....................74 3.3.20 Color Registration Sensor Assy................ 75 3.3.21 Duplex Guide Assy ................... 76 3.3.22 Electrical Chassis / Electrical Chassis Cooling Fan ......... 77 3.3.23 Print Engine Controller PWB ................
  • Page 6 Oki Data CONFIDENTIAL 5. Regular Maintenance .................. 126 Parts Replaced Regularly .................... 126 Cleaning ........................126 Cleaning of LED Lens Array ..................126 Cleaning Pick-up Roller ....................126 6. Troubleshooting Procedures ..............127 Precautions before troubleshooting ................127 Precautions before handling an abnormal image ............127 Precautions upon handling an abnormal image ............

  • Page 7: Specifications

    Oki Data CONFIDENTIAL SPECIFICATIONS Basic System Configuration The basic system configuration of C9500/C9300 is illustrated in Figure 1.1. 41956001TH Rev.1...

  • Page 8: Printer Engine Specifications

    Oki Data CONFIDENTIAL Printer Engine Specifications The inside of the printer is composed of the followings: • Electrophotographic Processor • Paper Paths • Controller Block (CU and PU) • Operator Panel • Power Units (High-Voltage Unit and Low-Voltage Unit) Figure 1-2 shows the printer configuration.

  • Page 9: Option Configuration

    Oki Data CONFIDENTIAL Option Configuration The followings are available as options on C9500/C9300. 2nd Tray/ 3rd Tray Note: Don’t use one for C9200/C9400 Duplex Unit Note: Don’t use one for C9200/C9400 High-Capacity Tray Note: Don’t use one for C9200/C9400 Expansion Memory 64/128/256/512MB Note: Don’t use one for...
  • Page 10 Oki Data CONFIDENTIAL (7) Finisher Unit (8) Simplified Color Copy Unit * Equipped with exclusive auto feeder (9) Dual-Purpose Finisher and Copy Unit Table, and Copy Unit Extension Rack Color Copy Unit Extension Rack Dual-Purpose Finisher and Copy Unit Table (10) 2nd/3rd Tray Unit on Casters Note: Don’t use one for...

  • Page 11: Specifications

    Oki Data CONFIDENTIAL Specifications (1) External Dimensions Height: 460mm Width: 666mm Length: 626mm (2) Weight 72 kg (3) Paper Type: Ordinary paper and transparencies (Recommended: ML OHP01) Size: Postal card, Legal 13" or 14", Executive, A4, A5, B5, A6, A3 A3-Nobi, B4 (Only the 1st tray and the front feeder support A6 and postal card sizes.)
  • Page 12 Oki Data CONFIDENTIAL (12) Temperatures and Relative Humidities Temperature Temperature (ºF) Temperature (ºC) Remark 17 to 27ºC (Temperatures to Operating 50 to 89.6 10 to 32 assure full color print quality) Non-Operating 32 to 109.4 0 to 43 Power-off Storage (Max. One Year) -14 to 109.4...

  • Page 13: Operation Description

    Oki Data CONFIDENTIAL OPERATION DESCRIPTION C9500/C9300, a tandem color electrophotographic page printer, adopts technologies such as 4992-LED array, OPC, dry single-component non-magnetic developing, roller transfer and heat- compression fusing. The printing method is black writing by shedding light on print areas.
  • Page 14 Oki Data CONFIDENTIAL 1200dpi K IDU Y IDU M IDU C IDU Motor Motor Motor Motor black yellow blue black FFPOS PENDF OHP1 green Humidity Tempature yellow SHUTTER HOPFF PCB-K7N Exit PARTTEMP HOP(INSNS1) PAPIN(INSNS2) PSWR(WRSNS) TNRFUL PCB-R71 FRPUCL HOPLIFT POWER...
  • Page 15 Oki Data CONFIDENTIAL Unit-Duplex In Sns SNS1 Front cable 4 Cable 2 RearClutch green Cable 3 FrontClutch PCB-V73 Motor blue white This side is the cutting corner. Figure 2.1.3 Tray-Second/3nd white blue Geard Motor This side is the cutting corner.
  • Page 16 Oki Data CONFIDENTIAL Tray_Option(Top/Middle Tray of LCF) white blue Geard Motor This side is the cutting corner. Cover Open PNEND PEND Feed PCB-B73 SNS1 MAIN2 SNS2 SNS3 GDDC Cable 3 FeedRollerClutch white Cable 4 PickUpClutch PCB-V7X Motor blue white This side is the cutting corner.

  • Page 17: Main Control Board (Tig-Pwb)

    Oki Data CONFIDENTIAL Main Control Board (TIG-PWB) Figure 2.2 provides the block diagram of the main control board (TIG-PWB). Figure 2.2 17 / 41956001TH Rev.1...
  • Page 18 The IDE HDD is used for storing font data, spooling edited video data temporarily and registering form data. (10) PCI Bus Option Two PCI I/F slots are provided for option board use. The bus, which uses an Oki Data original connector, can accept an Ethernet board. (11) Host Interface...

  • Page 19: Engine Control Board (K7N Pwb)

    CPU (MSM66Q577), general LSI chip (DCON, MCON), flash ROM, EEPROM, SRAM, SDRAM and pulse motor drivers (see Figure 2.3). (1) CPU This, a 16-bit CPU with an AD converter (OKI MSM66Q577), controls the entire system. DCON LSI This LSI (UPD65454GD-241-LML, UPD65946GD-137-LML), which is contained in the...

  • Page 20: Power Units

    Oki Data CONFIDENTIAL (3) MCON LSI This LSI is used for inport of SENSORs and the cntrols of Pulse Motors,Cluches,FANs and High Voltage Power Supply. (4) Flash ROM The flash ROM (29F800-70) is of 8-Mbits, and PU programs are stored in it.

  • Page 21: Mechanical Processes

    Oki Data CONFIDENTIAL Mechanical Processes Figure 2.4 shows the mechanical processes of the printer. Figure 2.4 21 / 41956001TH Rev.1...

  • Page 22: Electrophotographic Process

    Oki Data CONFIDENTIAL 2.4.1 Electrophotographic process (1) Electrophotographic process The following is the outline of electrophotographic process: 1 Charging DC voltage is applied to the charging roller and the surface of the OPC drum is negatively and evenly charged. 2 Exposure The LED head, under image signals, emits light to the negatively charged surface of the OPC drum.
  • Page 23 Oki Data CONFIDENTIAL (2) Charging Negative DC voltage is applied to the charging roller contacting the surface of the OPC drum. Power Charging roller Unit OPC drum (3) Exposure The negatively charged surface of the OPC drum is radiated with light from the LED head.
  • Page 24 Oki Data CONFIDENTIAL (4) Developing By the adhesion of toner to the latent electrostatic image on the drum surface, the image is changed to a toner image. The developing is processed at the contact part between the OPC drum and the developing roller.
  • Page 25 Oki Data CONFIDENTIAL (6) Fixing When passed between the heat roller and the backup roller, the toner image transferred to the paper is fused into place by the application of heat and pressure to it. The Teflon coated heat roller is heated by the built-in heat roller of 800W/backup roller of 500W (halogen lamp).

  • Page 26: Paper Running Process

    Oki Data CONFIDENTIAL 2.4.2 Paper running process Figure 2.5 shows how paper moves in the C9500/C9300. Fuser Registration roller Assy (B) Face-down stacker 4 x LED Units 4 x LED heads Heat roller Registration roller Assy (B) Eject roller Hopping roller...
  • Page 27 Oki Data CONFIDENTIAL (1) Paper Loading from 1st Tray 1. The paper loading motor runs (CCW), the paper loading clutch is engaged and, until the entrance cassette sensor is turned on, paper is advanced (the on/off operations of the paper loading clutch control the pickup roller).
  • Page 28 Oki Data CONFIDENTIAL (2) Paper Loading from Option Tray 1. The paper loading motor runs (CW), the paper loading clutch is engaged and, until the carrier sensor on a tray which sits atop a loading tray is turned on, paper is advanced.
  • Page 29 Oki Data CONFIDENTIAL (3) Paper Loading from Multipurpose Tray (MT) 1. The release lever usually pushes down the hopping plate to a position to turn the micro SW on (Figure 2.8-a). 2. The running of the motor in the (a) direction drives the MT feed roller, causing the cam to turn.
  • Page 30 Oki Data CONFIDENTIAL (4) Carrier Belt 1. The running of the carrier belt motor in the direction of the arrow (a) drives the carrier belt. The belt unit sits with one carrier roller immediately below each color’s drum, and the carrier belt between them.
  • Page 31 Oki Data CONFIDENTIAL (5) Driving and Up-and-Down Movements of I/D Unit 1. The I/D unit driving and up-and-down movements are effected by a single-pulse motor. The running of the main motor in the direction of the arrow (a) turns the lever 1 to the left.
  • Page 32 Oki Data CONFIDENTIAL Plate Spring Board Up-and-down Sensor Figure 2.10-c Figure 2.10-d Figure 2.10-e 32 / 41956001TH Rev.1...
  • Page 33 Oki Data CONFIDENTIAL (6) Fuser Unit and Paper Ejection 1. A single-pulse motor drives the fuser unit and the eject rollers. In response to the running of the heat motor in the direction of the arrow (a), the heat roller turns.
  • Page 34 Oki Data CONFIDENTIAL (7) Duplex Unit 1. When the duplex unit receives an instruction from the printer to print on both sides of a sheet of paper, the solenoid opens the separator after the completion of one side printing of a sheet of paper sent from the tray. The path is switched to that to the duplex unit.

  • Page 35: Sensor

    Oki Data CONFIDENTIAL Sensor 2.5.1 Paper related sensors Face-down paper eject sensor Paper eject roller Face-down sensor Stacker full sensor Entrance belt sensor C drum M drum Y drum K drum Heat roller MT feed roller Pinch roller 2 Paper eject sensor...

  • Page 36: Other Sensors

    Oki Data CONFIDENTIAL 2.5.2 Other sensors Paper Empty sensor This sensor checks whether the paper cassette is empty. Paper Near sensor This sensor checks whether the paper cassette is near empty. MBF Paper Empty sensor This sensor checks whether the front feeder has paper.

  • Page 37: Color Misalignment Correction

    Oki Data CONFIDENTIAL Color Misalignment Correction C9500/C9300, which is equipped with plural LED heads, causes color misalignment. The mechanically occurred color misalignment is automatically corrected as follows: (1) Color alignment to be corrected 1 Color misalignment in X-axis direction (Positional error caused by LED head)

  • Page 38: Paper Jam Detection

    Oki Data CONFIDENTIAL Paper Jam Detection C9000 detects paper jams after power-on and during printing. When a paper jam occurs, the printer immediately suspends the printing operation. Opening the cover to remove the jammed paper and closing it resumes the printing.

  • Page 39: Cover Opening

    Oki Data CONFIDENTIAL Cover Opening When the top cover of the printer is open, the cover open microswitch turns off to cut off those high- voltage power supply and output which are not less than +34V. At the same time, the CPU receives CVOPN signals for indicating the status of the microswitch and performs cover opening operation.

  • Page 40: Toner Low Detection

    Oki Data CONFIDENTIAL 2.10 Toner Low Detection • Structure This device consists of the stirring gear which revolves at a constant speed, the stirring bar, and the magnet on the stirring bar. The stirring bar turns in synchronization with the protrusion of the stirring gear.
  • Page 41 Oki Data CONFIDENTIAL Toner Full Condition (At warming-up,A4 transverse:15ppm *1) t1<1.12 TNRSNS T=2.3 Toner Low Condition (At warming-up,A4 transverse:15ppm *1) t1>1.12 TNRSNS T=2.3 • When the toner low condition is detected 20 consecutive times, toner low is detected. (The toner low message is displayed when about 1000 A4 sheets at 5% density have been printed after toner low had been detected.)

  • Page 42: Paper Size Detection

    Oki Data CONFIDENTIAL 2.11 Paper Size Detection Via the cam tied to the paper guide of the paper cassette, the four tab pieces are driven according to the set position of the paper guide. Upon installation of the paper cassette, the microswitch detects the condition of the tab pieces and the paper size is recognized.

  • Page 43: Operation At Power-On

    Oki Data CONFIDENTIAL 2.12 Operation at Power-on 2.12.1 Self-diagnostic test (1) Initial test The following checks are automatically performed at power-on. (a) ROM check (b) RAM check (c) EEPROM check (d) Flash ROM check (e) Mechanical check (f ) Option unit check ROM check ROM checking is performed by calculating a HASH value.

  • Page 44: Color Misalignment Detection

    Oki Data CONFIDENTIAL 2.13 Color Misalignment Detection Reflection-type optical sensors (Z71-PCB) are mounted at the right and left ends of the belt, respectively, in front of the toner scraping (cleaning) blade which is at the back of the belt unit. The...

  • Page 45: Version Read Of Units Replaced Periodically

    Oki Data CONFIDENTIAL 2.14 Version Read of Units Replaced Periodically The version of each of the I/D, fuser unit and belt unit which are replaced periodically is determined whether it is new or previous according to whether the fuse in it is conducting or out of conduction.

  • Page 46: Parts Replacement

    Oki Data CONFIDENTIAL PARTS REPLACEMENT This section describes the procedure for replacing the parts, assemblies and units in the field. The replacing procedure is given for detachment. To attach, use the reverse procedure. Precautions in Replacing Parts (1) Before replacing the parts, be sure to remove the CA cable and the interface cable.
  • Page 47 Oki Data CONFIDENTIAL [Maintenance Tools] Table 3-1 lists tools necessary to replace the units. Table 3-1 Maintenance Tools Service Tools Q' ty Place of use Remarks No. 1-100 Philips 2~2.5 mm screws screwdriver No. 2-200 Philips 3~5 mm screws screwdriver, Magnetized No.

  • Page 48: Parts Layout

    Oki Data CONFIDENTIAL Parts Layout Figure 3.1 48 / 41956001TH Rev.1...
  • Page 49 Oki Data CONFIDENTIAL [Top Cover Assy] Figure 3.2 49 / 41956001TH Rev.1...
  • Page 50 Oki Data CONFIDENTIAL [Printer Unit-1/2] Figure 3.3 50 / 41956001TH Rev.1...
  • Page 51 Oki Data CONFIDENTIAL [Printer Unit-2/2] Figure 3.4 51 / 41956001TH Rev.1...
  • Page 52 Oki Data CONFIDENTIAL [Cassette Guide Assy (L), (R)] Figure 3.5 52 / 41956001TH Rev.1...
  • Page 53 Oki Data CONFIDENTIAL 53 / 41956001TH Rev.1...
  • Page 54 Oki Data CONFIDENTIAL [Duplex Unit] Figure 3.6 54 / 41956001TH Rev.1...

  • Page 55: Replacing Parts

    Oki Data CONFIDENTIAL Replacing Parts This section describes how to replace the parts and assemblies illustrated below. C9500/C9300 41960434, 41960432 Print Engine Controller PWB (3.3.23) 41970801 4, 41971201 LED Assy (3.3.2) 41863002 Power-Unit AC-DC Switching (115V) (3.3.35) 41870802 Power-Unit AC-DC Switching (230V) (3.3.35) 42046801 HV Power Supply (3.3.36)

  • Page 56: Top Cover

    Oki Data CONFIDENTIAL 3.3.1 Top cover Open the top cover Assy. Unscrew 9 screws 1 to detach the top cover 2. Figure 3-3-1 Top Cover 56 / 41956001TH Rev.1...

  • Page 57: Led Head / Led Assy Spring

    Oki Data CONFIDENTIAL 3.3.2 LED Head / LED Assy Spring Open the Top Cover 1. Unplug 3 cables, release 2 hooks and remove the LED Head 2. (At this time, the 2 springs 3 become detached together with the LED Head 2.) Note! The contact is used only for 1200 dpi K, Y and M.

  • Page 58: Top Cover Unit

    Oki Data CONFIDENTIAL 3.3.3 Top Cover Unit Remove the Top Cover. (See Sec. 3.3.1.) Remove the Rear Cover. (See Sec. 3.3.12.) Remove the Front Cover (See Sec. 3.3.11.) Remove the Electrical Chassis. (See Sec. 3. 3. 22.) Unscrew the screws 1 and 2, and remove the Limiters (F) 3 and (R) 4.

  • Page 59: Control Panel Assy / Control Panel Bezel / Led Control Pwb / Toner Sensor / Stack Full Sensor / Control Panel / Control Panel Tape Harness / Eject Roller

    Oki Data CONFIDENTIAL 3.3.4 Control Panel Assy / Control Panel Bezel / LED Control PWB / Toner Sensor / Stack Full Sensor / Control Panel / Control Panel Tape Harness / Eject Roller Remove the Control Panel Bezel 1. Unscrew the screws 2 and remove the Control Panel 3.

  • Page 60: Top Cover Handle / Top Cover Latch / Top Cover Latch Spring

    Oki Data CONFIDENTIAL 3.3.5 Top Cover Handle / Top Cover Latch / Top Cover Latch Spring Unscrew 2 screws 1 and remove the Top Cover Handle 2 and Top Cover Latch 3. (At this time, 2 Top Cover Latch Springs 4 also come off.)

  • Page 61: Eject Guide Assy

    Oki Data CONFIDENTIAL 3.3.6 Eject Guide Assy Unscrew 7 screws 1 and remove the Eject Guide Assy 2. Figure 3-3-6 Eject Guide Assy 61 / 41956001TH Rev.1...

  • Page 62: Cassette Assy / Cover-Blind / Side Cover Assy

    Oki Data CONFIDENTIAL 3.3.7 Cassette Assy / Cover-Blind / Side Cover Assy Take out the Cassette Assy 1. Release 2 joints and remove the Cover-Blind 2. Unscrew 2 screws 3 and remove the stopper 4. Unscrew 5 screws 5, release the claw at the left support of the Side Cover (R) and remove the Side Cover (R) 6.

  • Page 63: Feed Roller

    Oki Data CONFIDENTIAL 3.3.8 Feed Roller Take out the Cassette. Release the latch and remove the Feed Rollers 1. Figure 3-3-8 Feed Roller 63 / 41956001TH Rev.1...

  • Page 64: Left Side Cover

    Oki Data CONFIDENTIAL 3.3.9 Left Side Cover Unscrew 4 screws 1 and remove the Left Side Cover 2. Figure 3-3-9 Left Side Cover 64 / 41956001TH Rev.1...

  • Page 65: Face Up Tray

    Oki Data CONFIDENTIAL 3.3.10 Face Up Tray Open the Face Up Tray 1 to the arrow direction, release the joints of the Links 2 (2 joints each) and then remove the Face Up Tray 1. Figure 3-3-10 Face Up Tray 65 / 41956001TH Rev.1...

  • Page 66: Front Cover

    Oki Data CONFIDENTIAL 3.3.11 Front Cover (1) Open the Top Cover 1. (2) Release 2 claws at the Side Cover (R) and remove the Blind Cover 2. (3) Unscrew 6 screws 3 and remove the Front Cover 4. Figure 3-3-11 Front Cover 66 / 41956001TH Rev.1...

  • Page 67: Rear Cover

    Oki Data CONFIDENTIAL 3.3.12 Rear Cover (1) Open the Top Cover 1. (2) Unscrew 6 screws 2 and a screw 3, and remove the Rear Cover 4. Figure 3-3-12 Rear Cover 67 / 41956001TH Rev.1...

  • Page 68: Multipurpose Tray Assy / Multipurpose Tray Cover Assy / Link / Multipurpose Tray Top Cover / Multipurpose Tray Drive Gear / Ohp Sensor

    Oki Data CONFIDENTIAL 3.3.13 Multipurpose Tray Assy / Multipurpose Tray Cover Assy / Link / Multipurpose Tray Top Cover / Multipurpose Tray Drive Gear / OHP Sensor (1) Remove the Rear Cover (See Sec. 3.3.12.) (2) Remove the Front Cover (See Sec. 3.3.11.) (3) Unscrew 3 screws 1 and remove Multipurpose Tray Top Cover 2.
  • Page 69 Oki Data CONFIDENTIAL [OHP Sensor Replacement] (7) Figure 3-3-13-1 shows the bottom of the multipurpose tray 4. First remove the cover 9 (figure 3-3-13-1). The cover 9 with five protrusions can be disengaged by removing them with a screwdriver etc.

  • Page 70: Drum Contact Assy

    Oki Data CONFIDENTIAL 3.3.14 Drum Contact Assy (1) Insert a screwdriver between the Printer Chassis and Drum Contact Assy 1, and remove the Drum Contact Assy 1. Figure 3-3-14 Drum Contact Assy 70 / 41956001TH Rev.1...

  • Page 71: Media Thickness Sensor Assy

    Oki Data CONFIDENTIAL 3.3.15 Media Thickness Sensor Assy (1) Detach the Cover Seal Sensor 1 and the Thickness Sensor Connector 2. (2) Remove the two screws 3 to demount the Media Thickness Assy. (3) Insert a microdriver(-) between the Thickness Plate Assy 4 and Thickness Sensor Assy 5 to...

  • Page 72: Registration Roller Assy (A) / Registration Drive Gear (A)

    Oki Data CONFIDENTIAL 3.3.16 Registration Roller Assy (A) / Registration Drive Gear (A) (1) Remove the Front Cover. (See Sec. 3.3.11.) (2) Remove the Rear Cover. (See Sec. 3.3.12.) (3) Remove the Multipurpose Tray. (See Sec. 3.3.13.) (4) Remove the Media Thickness Sensor Assy. (See Sec. 3.3.15.) (5) Remove the screw 1 of the Pickup Stage 2.

  • Page 73: Registration Roller Assy (B)

    Oki Data CONFIDENTIAL 3.3.17 Registration Roller Assy (B) (1) Take out the Cassette Assy. (2) Remove the Front Cover. (See Sec. 3.3.11.) (3) Remove the Rear Cover. (See Sec. 3.3.12.) (4) Remove the Electrical Chassis. (See Sec. 3. 3. 22.) (5) Remove the Registration Clutch.

  • Page 74: Registration Clutch / Registration Motor Assy

    Oki Data CONFIDENTIAL 3.3.18 Registration Clutch / Registration Motor Assy (1) Remove the Left Side Cover. (See Sec. 3.3.9.) (2) Remove the Electrical Chassis. (See Sec. 3. 3. 22.) (3) Unplug the connector, take out the E Ring 1 and dismount the Registration Clutch 2. Unscrew the screws 3 and 4, and remove the Earth Plate 5.

  • Page 75: Id Cooling Fan

    Oki Data CONFIDENTIAL 3.3.19 ID Cooling Fan (1) Unplug the connector 1, unscrew the screws 2 and remove the ID Cooling Fan 3. Note! When mounting the fan, pay attention to the mounting direction. air direction Figure 3-3-19 ID Cooling Fan 75 / 41956001TH Rev.1...

  • Page 76: Color Registration Sensor Assy

    Oki Data CONFIDENTIAL 3.3.20 Color Registration Sensor Assy (1) Unscrew 2 screws 1, unplug 3 connectors and remove the Color Registration Sensor Assy 2. (2) Remove the Earth Plate (B) 3. Connectors Figure 3-3-20 Color Registration Sensor Assy 76 /...

  • Page 77: Duplex Guide Assy

    Oki Data CONFIDENTIAL 3.3.21 Duplex Guide Assy (1) Release the latch and remove the Duplex Guide Assy 1. (2) Remove the springs 2. Main Chassis (L) Figure 3-3-21 Duplex Guide Assy 77 / 41956001TH Rev.1...

  • Page 78: Electrical Chassis / Electrical Chassis Cooling Fan

    Oki Data CONFIDENTIAL 3.3.22 Electrical Chassis / Electrical Chassis Cooling Fan (1) Unscrew 5 screws 1 and 2 screws 2, and remove the Plate (A) 3. (2) Unscrew 31 screws 4 and remove the Shield Plate (B) 5. (3) Remove the Printer Engine Controller PWB. (See Sec. 3.3.23.) (4) Unscrew 11 screws 6 and remove the Electrical Chassis 7.

  • Page 79: Print Engine Controller Pwb

    Oki Data CONFIDENTIAL 3.3.23 Print Engine Controller PWB (1) Remove the Rear Cover. (See Sec. 3.3.12.) (2) Remove the Electrical Chassis and Electrical Chassis Cooling Fan. (See Sec. 3.3.22.) (3) Unscrew 5 screws 1, unplug all the connectors and remove the Print Engine Controller PWB 2.

  • Page 80: Printer Unit Chassis

    Oki Data CONFIDENTIAL 3.3.24 Printer Unit Chassis (1) Open the top cover. (2) Remove the fuser unit (see section 3.3.38). (3) Remove the belt unit (see section 3.3.39). (4) Remove the top cover unit (see section 3.3.3). (5) Remove the eject guide Assy (see section 3.3.6).

  • Page 81: Entrance Cassette Sensor Actuator

    Oki Data CONFIDENTIAL 3.3.25 Entrance Cassette Sensor Actuator (1) Remove the Printer Unit Chassis. (See Sec. 3.3.24.) (2) Turn over the Main Chassis. (3) Release 2 clamps with tweezers and remove the Entrance Cassette Sensor Actuator 1. Main chassis Figure 3-3-25 Entrance Cassette Sensor Actuator 81 / 41956001TH Rev.1...

  • Page 82: Entrance Sensor Pwb (R71)

    Oki Data CONFIDENTIAL 3.3.26 Entrance Sensor PWB (R71) (1) Remove the Registration Roller Assy B. (See Sec. 3.3.17.) (2) Unscrew 2 screws 1 and remove the Entrance Sensor PWB 2. Figure 3-3-26 Entrance Sensor PWB 82 / 41956001TH Rev.1...

  • Page 83: Entrance Mt Sensor Actuator / Entrance Belt Sensor Actuator

    Oki Data CONFIDENTIAL 3.3.27 Entrance MT Sensor Actuator / Entrance Belt Sensor Actuator / Entrance Waste Toner Sensor Actuator (1) Remove the Entrance Sensor PWB (R71). (See Sec. 3.3.26.) (2) Release the latch and remove the Entrance MT Sensor Actuator 1.

  • Page 84: Main Cooling Fan (Pull) Assy / Main Cooling Fan (Push) / Fuser Eject Roller

    Oki Data CONFIDENTIAL 3.3.28 Main Cooling Fan (PULL) Assy / Main Cooling Fan (PUSH) / Fuser Eject Roller (1) Unscrew 2 screws 1 and remove the Main Cooling Fan (PULL) Assy 2. (2) Unscrew the screw 3 and remove the Fuser Eject Roller Contact 4.

  • Page 85: Eject Sensor Assy

    Oki Data CONFIDENTIAL 3.3.29 Eject Sensor Assy (1) Remove the Fuser Eject Roller. (See Sec. 3.3.28.) (2) Unscrew the screw 1, unplug the connector and remove the (red/blue) Eject Sensor Assy 2. Figure 3-3-29 Eject Sensor Assy 85 / 41956001TH Rev.1...

  • Page 86: Fuser Latch Handle (L)

    Oki Data CONFIDENTIAL 3.3.30 Fuser Latch Handle (L) (1) Remove the Latch Handle Spring 1. (2) Unscrew the screw 2 and remove the Fuser Latch Handle (L) 3. Figure3-3-30 Fuser Latch Handle (L) 86 / 41956001TH Rev.1...

  • Page 87: Belt Motor Assy

    Oki Data CONFIDENTIAL 3.3.31 Belt Motor Assy (1) Remove the Fuser Latch Handle (R). (See Sec. 3.3.32.) (2) Unscrew 2 screws 1 and unplug 2 connectors 2. (3) Remove the Belt Motor Assy 3. Figure 3-3-31 Belt Motor Assy 87 /...

  • Page 88: Fuser Latch Handle (R)

    Oki Data CONFIDENTIAL 3.3.32 Fuser Latch Handle (R) (1) Remove Printer Unit Chassis. (See Sec. 3.3.24.) (2) Take out the E Ring 1. (3) Release the Fuser Latch Handle Spring 2 and remove the Fuser Latch Handle (R) 3. Figure 3-3-32 Fuser Latch Handle (R) 88 / 41956001TH Rev.1...

  • Page 89: Main Motor Assy

    Oki Data CONFIDENTIAL 3.3.33 Main Motor Assy (1) Remove the Belt Motor Assy. (See Sec. 3.3.31.) (2) Unplug all the connectors. (3) Unscrew 2 screws 1 and remove the Main Motor Assy 2. Figure 3-3-33 Main Motor Assy 89 /...

  • Page 90: Contact Assy / Side Plate Assy

    Oki Data CONFIDENTIAL 3.3.34 Contact Assy / Side Plate Assy (1) Remove the Printer Unit Chassis. (See Sec. 3.3.24.) (2) Unscrew 4 screws 1 and remove the Side Plate Assy 2. (3) Unscrew the screws 3 and remove the Contact Assy 4.

  • Page 91: Low-Voltage Power Unit

    Oki Data CONFIDENTIAL 3.3.35 Low-voltage Power Unit (1) Remove the Printer Unit Chassis. (See Sec. 3.3.24.) (2) Unplug the connector 1. (3) Unscrew 6 screws 2 and remove Low-voltage Power Unit 5. (4) Unplug the connector 3. (5) Unscrew the screw 6, release the claw at the AC Switch 7 and remove the plate 8.

  • Page 92: High-Voltage Power Unit

    Oki Data CONFIDENTIAL 3.3.36 High-voltage Power Unit (1) Remove the Contact Assy. (See Sec. 3.3.34.) (2) Remove the connector of the High-voltage Power Unit 1. (3) Unscrew 2 screws 2 and remove the High-voltage Power Unit 1 and HV Tape Harness 3.

  • Page 93: Main Feeder Assy

    Oki Data CONFIDENTIAL 3.3.37 Main Feeder Assy (1) Remove the Printer Unit Chassis. (See Sec. 3.3.24.) (2) Remove the Low-voltage Power Unit and High-voltage Power Unit. (See Secs. 3.3.35 and 3.3.36.) (3) Unscrew 5 screws 1 and remove the Lower Plate 2.

  • Page 94: Fuser Unit

    Oki Data CONFIDENTIAL 3.3.38 Fuser Unit (1) Open the Top Cover 1. (2) Push the left/right Fuser Levers (blue) 2 to the arrow direction and remove the Fuser Unit 3. Figure 3-3-38 Fuser Unit 94 / 41956001TH Rev.1...

  • Page 95: Belt Unit

    Oki Data CONFIDENTIAL 3.3.39 Belt Unit (1) Open the Top Cover 1. (2) Remove the I/D Unit. (3) Push the lever (blue) 2 to the arrow direction and pull the handle (blue) upward to remove the Belt Unit 3. Figure 3-3-39 Belt Unit 95 / 41956001TH Rev.1...

  • Page 96: Duplex Unit

    Oki Data CONFIDENTIAL 3.3.40 Duplex Unit (1) Pull the lever 2 of the duplex unit 1 to slide out the unit 1 toward the front, and detach the unit 1 by pulling its front upward. (2) Turn the lever 3 of the duplex unit 1 toward the front, then pull the lever 4 toward the front to check to see that the pin 5 moves up.

  • Page 97: Cu Assy

    Oki Data CONFIDENTIAL 3.3.41 CU Assy (1) Pulling out Controller Board Undo the two screws 1. Pull the controller board 2 out. Place the controller board 2 on a flat table. (2) Detaching Fan Remove the connector 3. Unscrew 2 screws 4.
  • Page 98 Oki Data CONFIDENTIAL (3) Demounting TIG Board Remove 3 screws 6 and screw 7 ,and remove the fan bracket 8. Remove the screw 9 and 4 screws 0 ,and remove the plate support A and the guide rail AB. Remove 2 screws C ,and remove the guide rail BD.

  • Page 99: Adjustment

    Oki Data CONFIDENTIAL ADJUSTMENT This device is adjusted by key input from the operator panel. Other than the general menu, this device supports a maintenance menu. Select the menu that matches your objective. System Maintenance MENU The printer enters this mode when you turn on the power supply switch while holding down the [Menu]+[Item]+[Value]+[Cancel] (0+1+6+7)switches.

  • Page 100: Id Check Pattern Printing ( " Test Print Menu " Item )

    Oki Data CONFIDENTIAL Table 4-0 (2/2) Maintenance Menu display Table Category Value(2nd Line) Functions Item(1st Line) NETWORK The details depend on Network. ( Not used ) DIAGNOSTIC MODE Enters engine self-diagnostic mode. The display in place of xx.xx varies among the XX.XX.XX...
  • Page 101 Oki Data CONFIDENTIAL Maintenance Menu Category Item(1st Line) Functions Value(2nd Line) MAINTENANCE MENU EEPROM reset Resets EEPROM for CU. EXECUTE SAVE MENU Save Saves current menu setting. A EXECUTE menu setting message asking Are you sure? and a choice of YES/NO will appear.

  • Page 102: Engine Maintenance Mode

    Oki Data CONFIDENTIAL 4.1.2 Engine maintenance mode Three modes from Level 1 to Level 3 are in the engine maintenance mode. Level 1 is a mode that checks the media transport and basic movement of the print system. Level 2 checks the counter for consumables and tests the correcting function of color displacement, and is a mode that does not require special knowledge.

  • Page 103: Entering Self-Diagnostic Mode (Level 1)

    Oki Data CONFIDENTIAL 4.1.2.2.1 Entering self-diagnostic mode (Level 1) ) ) ) ) ) 1. The system maintenance menu mode is entered by turning the power ON while pressing the 1 1 1 1 1 6 6 6 6 6...
  • Page 104 Oki Data CONFIDENTIAL Top fuser sensor (center/left) Bottom fuser sensor M toner sensor Y toner sensor (center) K toner sensor C toner sensor Stacker full sensor Cover up switch Job offset sensor Job offset home sensor Heat/Humidity sensor Paper weight sensor...
  • Page 105 Oki Data CONFIDENTIAL 105 / 41956001TH Rev.1...
  • Page 106 Oki Data CONFIDENTIAL Table 4-2 Paper Size Detection - Paper /Bit Correspondence Table Paper No cassette Letter-S Legal13-S A4-S B5-S Executive-S A6-S Not supported — — — — Legal14-S Not supported — — — — Not supported — — —...

  • Page 107: Motor Clutch Test

    Oki Data CONFIDENTIAL 4.1.2.4 Motor clutch test This self-diagnostic routine is used to test the motor and clutch. 1 1 1 1 1 5 5 5 5 5 1. Press the keys until the self-diagnostic (Level 1) mode is entered and [MOTOR &...
  • Page 108 Oki Data CONFIDENTIAL Sensor shutter solenoid ID motor (C) ID motor (Y) Belt motor ID motor (M) ID motor (K) Fuser motor Job offset motor Eject solenoid Duplex print solenoid Resist motor Resist clutch Duplex print motor Feed clutch Carrier clutch...
  • Page 109 Oki Data CONFIDENTIAL Drive Restrictions Displayed Unit Restriction Display Drive by removing all ID ID motor (black) Remove ID ID motor (yellow) (yellow/black/magenta/cyan). ID motor (magenta) ID motor (cyan) Belt motor Fuser motor Resist motor Job offset motor Cassette 1 motor Drive by removing Cassette 1.

  • Page 110: Test Print

    Oki Data CONFIDENTIAL 4.1.2.5 Test print This self-diagnostic routine is used to print the test patterns in the PU. The other test patterns are stored in the controller. 1 1 1 1 1 5 5 5 5 5 1. Press the...
  • Page 111 Oki Data CONFIDENTIAL COLOR Y:ON M:ON C:ON K:ON 3 3 3 3 3 4. Test print will be executed under the values set in Steps 2 and 3 by pressing the key when [PRINT EXECUTE] is displayed in the bottom row of the display.
  • Page 112 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7 112 / 41956001TH Rev.1...
  • Page 113 Oki Data CONFIDENTIAL • The following messages appear during print operation. P=*** T=*** U=***[###] H=***% L=***[###] P: No. of test print pages (unit: page) U: Temperature of top heater [Set value] (unit: Celsius) L: Temperature of bottom heater [Set value] (unit: Celsius)

  • Page 114: Nvm Initialization

    Oki Data CONFIDENTIAL 4.1.2.6 NVM initialization This self-diagnosis is used for initializing non-volatile memory. 1 1 1 1 1 5 5 5 5 5 1. Press the keys until the self-diagnostic (Level 1) mode is entered and [NV-RAM INITIAL] 1 1 1 1 1 5 5 5 5 5 is displayed in the top line.

  • Page 115: Consumable Counter Display

    Oki Data CONFIDENTIAL 4.1.2.7 Consumable counter display This self-diagnosis is used for displaying the consumed status of consumables. 1 1 1 1 1 5 5 5 5 5 1. Press the keys until the normal self-diagnostic mode is entered and [CONSUMABLE...

  • Page 116: Error Messages And Their Details

    Oki Data CONFIDENTIAL 4.1.2.9 Error Messages and their details Panel display Panel Display Details BLANCE ERROR Balance error BELT LIFE OVER Belt life over BELT REFLECTION ERROR Belt reflection error BELT UNIT FUSE CUT ERROR Belt unit fuse cut error...
  • Page 117 Oki Data CONFIDENTIAL Panel Display Details DRIVE MOTOR OVER HEAT DRIVE MOTOR OVER HEAT DUPLEX I/F ERROR DUPLEX I/F ERROR DUPLEX TYPE MISMATCH DUPLEX TYPE MISMATCH DUPLEX UNIT OPEN(PX713) DUPLEX UNIT OPEN(PX713) ENGINE BOARD FAN MOTOR ERROR ENGINE BOARD FAN MOTOR ERROR...
  • Page 118 Oki Data CONFIDENTIAL Panel Display Details JAM TRANSPORT Transport jam JOB OFFSET HOME ERROR(PX713) JOB OFFSET HOME ERROR(PX713) LED HEAD OVER HEAT LED HEAD OVER HEAT LIFT ERROR TRAY1(PX713) LIFT ERROR TRAY1(PX713) LIFT ERROR TRAY2(PX713) LIFT ERROR TRAY2(PX713) LIFT ERROR TRAY3(PX713)
  • Page 119 Oki Data CONFIDENTIAL Panel Display Details PAPER NEAR END TRAY4 PAPER NEAR END TRAY4 PAPER NEAR END TRAY5 PAPER NEAR END TRAY5 PAPER PILE OUT OF TRAY Paper transport error PAPER SIZE ERROR PAPER SIZE ERROR POWER SUPPLY FAN MOTOR ERROR...
  • Page 120 Oki Data CONFIDENTIAL Panel Display Details CYAN REGISTRATION OUT RIGHT CYAN REGISTRATION OUT RIGHT CYAN SENSOR ERROR LEFT CYAN SENSOR ERROR LEFT CYAN SENSOR ERROR RIGHT CYAN SENSOR ERROR RIGHT CYAN TONER EMPTY CYAN TONER EMPTY CYAN TONER LOW CYAN TONER LOW...

  • Page 121: Various Print Jobs With Single Printer Unit Attached With A Controller

    Oki Data CONFIDENTIAL 4.1.3 Various print jobs with single printer unit attached with a controller Menu map print Prints program version, configuration of the control unit, and other printer configuration and setting. Operation: (Press switch) Without HDD : “0” “3”...

  • Page 122: Adjustments After Parts Replacement

    Oki Data CONFIDENTIAL Adjustments after Parts Replacement The following describes the adjustments that are required after replacing parts. Adjustment and correction for color registration are always required for each part replacement. Adjustment Replaced Part LED Head Not required Drum Cartridge (Y, M, C, K) Not required.

  • Page 123: Eeprom Replacement After Tig Board Replacement

    Oki Data CONFIDENTIAL Item Contents Count Fuser Life count of the fuser Value in which the number of printed pages is converted to the number of Letter paper after installing a new fuser unit. Transfer Belt Life count of the...

  • Page 124: Recovery Flash Rom Data On Tig Board

    Oki Data CONFIDENTIAL 4.2.5 Recovery Flash ROM data on TIG board A 4MB Flash ROM that enables a user to register an arbitrary file is installed on the TIG board. Note: When a TIG board has to be replaced, print a file list of the information menu and check the registered files before replacing the board.

  • Page 125: Paper Thickness Detection Sensitivity Adjustment And Media Thickness Detection Value Check

    Oki Data CONFIDENTIAL Paper Thickness Detection Sensitivity Adjustment and Media Thickness Detection Value Check Outline: The sensitivity of a micro displacement sensor used for detecting media thickness varies from one to another. Therefore, to ascertain the sensitivity in advance, check the output value of the sensor by passing media of known thickness through the printer equipped with the sensor.
  • Page 126 Oki Data CONFIDENTIAL Inputting the density of the calibration chip for density detection (1) Write the calibration target adjustment value (last 2 digits in the barcode, refer to the figure below) indicated on the shutter label. The adjustment value of the shutter must be reset when Sheet Color, density sensor, or PU sensor is replaced.

  • Page 127: Regular Maintenance

    Oki Data CONFIDENTIAL REGULAR MAINTENANCE Parts Replaced Regularly It is recommended that the following parts be periodically replaced, as specified, by users (When they are not replaced, print quality is not assumed and printer problems may result). Part Name Time of Replacement...

  • Page 128: Troubleshooting Procedures

    Oki Data CONFIDENTIAL TROUBLESHOOTING PROCEDURES Precautions before troubleshooting (1) Confirm the basic inspection items described in the user manual. (2) Obtain as much information regarding the problem from the user as possible. (3) Check the printer in a condition close to that upon generating the problem.

  • Page 129: Preparing For Troubleshooting

    Oki Data CONFIDENTIAL Preparing for Troubleshooting Operator panel display Problems that occur with the printer are indicated in the LCD. Apply proper remedies according to the message indicated in the LCD. Troubleshooting Procedure Confirm the problem in the following method when the printer generates a problem.

  • Page 130: Lcd Message List

    Oki Data CONFIDENTIAL 6.5.1 LCD message list When the printer detects a non-recoverable error, the following service call error is displayed in the LCD. Service call nnn: error Note: nnn is an error code. When [Service call] is displayed, error information that corresponds to the error code appears in the bottom line in the LCD.
  • Page 131 Oki Data CONFIDENTIAL Table 6-1-1 Operator Alarms (2/6) Message Cause Error Description Solutions Press ), 3, 5, 6 to turn power ON, Service Call Flash File SYSTEM Failed access to Flash set directly on CU 042: Error Error board. release buttons when...
  • Page 132 Oki Data CONFIDENTIAL Table 6-1-1 Operator Alarms (3/6) Message Cause Error Description Solutions Does EEPROM exist? Service Call EEPROM not detected Check for EEPROM and set if not Does error reoccur? 105: Error at power ON. found. Replace engine control board (K7N).
  • Page 133 Oki Data CONFIDENTIAL Table 6-1-1 Operator Alarms (4/6) Message Cause Error Description Solutions When a fuse could not Service Call Is ID unit set properly? Check cable connections and replace be disconnected in the 150: Y engine board. ID unit.
  • Page 134 Oki Data CONFIDENTIAL Table 6-1-1 Operator Alarms (5/6) Message Cause Error Description Solutions Close cover Printer engine cover 1) Check if top cover is open. Close top cover. 310: Top open. 2) Check if cover switch is proper. Close side cover.
  • Page 135 Oki Data CONFIDENTIAL Table 6-1-1 Operator Alarms (6/6) Message Cause Error Description Solutions Check Paper jam detected Check paper jam in duplex unit. Remove jammed paper. DUPLEX after paper rotated in Check/replace duplex unit. 370: Paper jam duplex unit. Check Paper jam during paper Check paper jam in duplex unit.

  • Page 136: Preparing For Troubleshooting

    Oki Data CONFIDENTIAL 6.5.2 Preparing for troubleshooting (1) Operator panel display Problems that are generated in this device are indicated in the LCD. Apply proper measures according to the message displayed in the LCD. Problem Flow Chart No. The printer does not function properly after power ON.

  • Page 137: The Printer Does Not Function Properly After Power On

    Oki Data CONFIDENTIAL 1 The printer does not function properly after power ON. • Turn the power OFF then ON. • displayed? (Approx. 1 sec.) • Is the AC cable connected properly? No Connect the AC cable properly. • Yes Is +5V output to the panel connector (OPTN connector) on the engine board (K7N PWB)?

  • Page 138: Feed Jam (1St Tray)

    Oki Data CONFIDENTIAL 2-1 Feed jam (1st tray) • Do feed jams occur right after power ON? • Yes Is the jam at the entrance cassette sensor or entrance MT sensor? Yes Remove the jammed paper. • Does the sensor lever (entrance cassette sensor or entrance MT sensor) function properly? Replace the faulty sensor lever.

  • Page 139: Feed Jam (Multipurpose Tray)

    Oki Data CONFIDENTIAL 2-2 Feed jam (multipurpose tray) • Do feed jams occur right after power ON? • Yes Is the jam at the entrance cassette sensor or entrance MT sensor? Yes Remove the jammed paper. • Does the sensor lever (entrance MT sensor) function properly? Replace the faulty sensor lever.

  • Page 140: Path Jam

    Oki Data CONFIDENTIAL 2-3 Path jam • Do path jams occur right after power ON? • Yes Is the jam at the entrance belt sensor? Yes Remove the jammed paper. • Does the light sensor lever function properly? Replace the light sensor lever.

  • Page 141: Exit Jam

    Oki Data CONFIDENTIAL 2-4 Exit jam • Do exit jams occur right after power ON? • Yes Is the jam at the paper exit sensor? • Yes Remove the jammed paper. • Does the paper exit sensor lever function properly? •...

  • Page 142: Duplex Jam

    Oki Data CONFIDENTIAL 2-5 Duplex jam • Do path jams occur right after power ON? • Yes Is there paper in the duplex print unit? Yes Remove the jammed paper. • Do the duplex unit entrance sensor, rear sensor, and sensor lever of the front sensor function properly? Replace the faulty sensor lever.

  • Page 143: Paper Size Error

    Oki Data CONFIDENTIAL 3 Paper size error • Is paper of regulated size being used? Use paper of regulated size. • Is a jam detected by the entrance FF sensor or paper width sensor? Yes Remove the jammed paper. •...
  • Page 144 Oki Data CONFIDENTIAL 4 Up/Down movement error of the image drum unit (ID) • Turn the printer OFF, then turn it ON after a few seconds. • Are all ID drums rotating properly during print operation? • Is the ID motor resistance within the regulated value (approx. 2.4 )? Replace the faulty IDU motor.

  • Page 145: Fuser Unit Error

    Oki Data CONFIDENTIAL 5 Fuser unit error • Do fuser errors occur right after power ON? • Yes Is the heat roller thermister disconnected or generating a short circuit? (See Fig. 6-1) (Approx. 190k-980k in room temperature of 0-43 degrees Celsius.) •...
  • Page 146 Oki Data CONFIDENTIAL 5 Motor fan error • Does the low-voltage power fan rotate at power ON? • Is 34V output to fuse F7 on the engine board (K7N PWB)? • Is 34V output to the power connector on the engine board (K7N PWB)? 34V: Pin 12, 13, 14 Check the cable connections, then replace the low-voltage power unit.

  • Page 147: Troubleshooting For Abnormal Images

    Oki Data CONFIDENTIAL 6.5.3 Troubleshooting for abnormal images Apply remedies according to the following table when printed images are abnormal as shown below. Abnormal Image Flowchart No. The entire image is faint or the color is irregular. (Figure 6.2- A ) The white portion is dirty.

  • Page 148: 41956001Th Rev.1

    Oki Data CONFIDENTIAL 1 An image is generally faint or the color is irregular. (Fig 6-2 A ) • Is the amount of toner low? (Is [Toner Low] indicated?) Refill toner. • Is regulated paper used? Use regulated paper. •...
  • Page 149 Oki Data CONFIDENTIAL 2 Dirty Background. (Fig. 6-2 B ) • Was the image drum exposed to external light for a long time? Yes Replace the I/D unit. • Is the roller in the fuser unit dirty? Yes Replace the fuser unit.
  • Page 150 Oki Data CONFIDENTIAL White page (Fig 6-2 C ) • Is the LED head assembly connected properly to the connection board (Y73 PWB) or engine board (K7N PWB)? Connect the cables, connect the LED assembly to the connection board (Y73 PWB), and engine board properly.
  • Page 151 Oki Data CONFIDENTIAL Solid lines or streaks appear in the vertical direction. (Black lines, color lines / black streaks, color streaks) (Fig. 6-2 D ) • Is the LED head assembly connected properly to the connection board (Y73 PWB)? Connect the LED head assembly to the connection board properly.
  • Page 152 Oki Data CONFIDENTIAL Thick white lines / streaks or blurred color lines / streaks appear in the vertical direction (Fig. 6-2 F ) • Is the LED head dirty? YES Clean the LED head. • Is the LED head assembly connected to the connection board (Y73 PWB) properly? Connect the LED head assembly to the connection board (Y73 PWB) properly.
  • Page 153 Oki Data CONFIDENTIAL Poor Fusing (Ink spreads or peels when touched with fingers) • Is regulated paper being used? Use regulated paper. • Is the contact of the fuser unit connected properly? Connect the contact of the fuser unit properly.
  • Page 154 Oki Data CONFIDENTIAL Consistent abnormality (Figure 6.2- E ) Consistency Problem Remedy 94.2 mm Image Drum Replace the ID unit. 63.6 mm Developing Roller Replace the ID unit. 57.8 mm Toner Supply Roller Replace the ID unit. 44.0 mm Charge Roller Replace the ID unit.
  • Page 155 Oki Data CONFIDENTIAL Color detaches. • Is the LED head dirty? YES Clean the LED head. • Is the LED head assembly connected to the connection board (Y73 PWB) properly? Check the connection cable between the LED head and connection board, then connect properly.
  • Page 156 Oki Data CONFIDENTIAL Color irregularity • [Toner Low] is displayed. YES Refill toner. Did the printer recover? YES End. • Perform the color irregularity test in the engine maintenance mode. Method: Enter the self-diagnostic mode (Level 1) in the engine maintenance mode.
  • Page 157 Oki Data CONFIDENTIAL • [NG CALIBRATION LEFT /RIGHT] display. • YES Is the color irregularity sensor cover dirty? YES: Faulty cleaning operation of the rear sensor cover due to the cleaning blade on the rear side of the shutter. Replace the shutter and sensor cover, and recover cleaning capability.
  • Page 158 Oki Data CONFIDENTIAL • [Yellow/Magenta/Cyan Left/Right/Horizontal] display • YES Replace the belt unit. Did the printer recover? YES End. • Replace the ID unit. Did the printer recover? YES End. • Is the gear abnormal? (Gear assembly such as I/D, multipurpose tray, belt unit, belt motor.) YES Replace the damaged gear assembly.
  • Page 159 Oki Data CONFIDENTIAL Color irregularity compared with the original • Is the LED head lens dirty? YES Clean the LED head lens. • Is the LED head assembly connected to the connection board (Y73 PWB) properly? Check the cable between the LED assembly and connection board and connect properly.
  • Page 160 Oki Data CONFIDENTIAL Paper thickness error (Err Code 323, 324) • Is the sensor connector connected? Connect the connecter. • Is the sensor cable disconnected? Replace the cable. • Is +5V output to the PU board REG 13pin? Replace the PU board.
  • Page 161 Oki Data CONFIDENTIAL Ground Charge Roller Developing Roller Toner Supply Roller Figure 6.3 161 / 41956001TH Rev.1...

  • Page 162: Fuse Check

    Oki Data CONFIDENTIAL Fuse check When it is occured bellow errors, check these fuses on Print Engine Controller PWB (K7N-PWB). Table 6-6 Fuse Error Fuse Name Error Description Insert Point 2nd or 3rd or 4th or 5th TRY Hopping Error...

  • Page 163: Wiring Diagram

    Unit Circuit Diagram Illustration Resistance Yellow Orange Between pins 1 and 2: 7.9 Transfer Belt Motor Between pins 3 and 4: 7.9 Black Brown Between pins 1 and 2: 2.4 Main Motor (Y) Between pins 3 and 4: 2.4 Between pins 1 and 2: 2.4 Main Motor (M) Between pins 3 and 4: 2.4...
  • Page 164 Unit Circuit Diagram Illustration Resistance Between pins 1 and 2: 2.4 Main Motor (C) Between pins 3 and 4: 2.4 Between pins 1 and 2: 2.4 Main Motor (B) Between pins 3 and 4: 2.4 Between pins 1 and 2: 7.9 Between pins 3 and 4: 7.9 Resistration Motor...
  • Page 165 Unit Circuit Diagram Illustration Resistance Yellow Orange Between pins 1 and 2: 7.9 Fuser Motor Between pins 3 and 4: 7.9 Black Brown Between pins 1 and 2: 7.9 or 8.4 Feeder Motor Between pins 3 and 4: 7.9 or 8.4 Yellow Orange Between pins 1 and 2: 23...
  • Page 166 Unit Circuit Diagram Illustration Resistance CN-1 Geared Motor CN-2 +34 V CU Low-voltage White Ejection Fuser Fan FANALM-N Electrical Chassis Cooling Black +34 V White Low-voltage FANALM-N Absorption Fuser Fan Black...
  • Page 167 Unit Circuit Diagram Illustration Resistance +34 V White FANALM-N Fuser Unit Exhaust Fan Black +5 V White FANALM-N CU Board Black +5 V White ID Fan Black...
  • Page 168 Unit Circuit Diagram Illustration Resistance 1. Upper roller side 1 Upper roller 2 Backup roller Heater Heater Between pins a and b: Between pins c and d: 231.4k (at 25 C) Thermostat1 Thermostat2 Between pins e and f: 231.4k (at 25 C) Thermistor Thermistor Fuser Unit...

  • Page 169: Parts Layout On Boards

    Oki Data CONFIDENTIAL Parts Layout on Boards (1)-1 Print Engine Controller PWB (K7N-3:PWB:600dpi) 169 / 41956001TH Rev.1...
  • Page 170 Oki Data CONFIDENTIAL (1)-2 Print Engine Controller PWB (K7N-4:PWB:1200dpi) 170 / 41956001TH Rev.1...
  • Page 171 SDMM3 SDMM2 SDMM1 SDRAM 3xDIMM sockets (SDRAM DIMM (64MB~512MB)) 2xDIMM sockets (for program and fonts) DIMM...
  • Page 172 Oki Data CONFIDENTIAL LED Control PWB a)(Y73-2 PWB:600dpi) b)(Y7X-2 PWB:1200dpi) (4) Duplex Control PWB (V73- PWB) SNS1 (5) Control Panel PWB (X7N- PWB) SNS1 172 / 41956001TH Rev.1...
  • Page 173 Oki Data CONFIDENTIAL (6) N71-PWB JODEN (7) Entrance Sensor PWB (R71- PWB) INSNS2 INSNS1 WRSNS (8) Paper Size Sensing PWB (B73- PWB) CN11 (9) Sensor PWB (A73-PWB) LIFT (10) Option I/F PWB (C73-PWB) MAIN1 SAVIF 173 / 41956001TH Rev.1...
  • Page 174 Oki Data CONFIDENTIAL (11) Tray Control PWB (V73-PWB) GDDC SNS1 MAIN2 SNS2 (12) Hight-Voltage PWB 174 / 41956001TH Rev.1...
  • Page 175 Oki Data CONFIDENTIAL (13) Low-voltage PWB CN4-2 (CN6-2) CN4-1 (CN6-1) ACIN CN8 CN9 CN10 (14) Color Registration Sensor PWB (Side L:Z7L, Side R:Z7R) (15) Humidity Sensor (16) Density Sensor 175 / 41956001TH Rev.1...

  • Page 176: Parts List

    Oki Data CONFIDENTIAL PARTS LIST Figure 8-1-1/3 176 / 41956001TH Rev.1...
  • Page 177 Oki Data CONFIDENTIAL Figure 8-1-2/3 177 / 41956001TH Rev.1...
  • Page 178 Oki Data CONFIDENTIAL Figure 8-1-3/3 178 / 41956001TH Rev.1...

  • Page 179: Main Assembly

    Oki Data CONFIDENTIAL Table 8-1-1/3 Main Assembly Recommended Q’ty/Year Patrs No. Name Q’ty Remarks /Unit 1000 2000 41481203 Cover Assy-R 41484915 ODA/OEL/APS Cassette Assy 41353701 Cover-Front-CS 41277901 Cover-Blank 41276401 OEL/APS Cover-Front 41749602 Cover-Assy-Front 41277401 Cover-Side(L) 41484201 Stacker-Face-Up Assy 41276501 Cover-Rear...
  • Page 180 Oki Data CONFIDENTIAL Table 8-1-2/3 Recommended Q’ty/Year Patrs No. Name Q’ty Remarks /Unit 1000 2000 41963401 ID-Y Type C5 ODA Consumable 41963402 ID-M Type C5 ODA Consumable 41963403 ID-C Type C5 ODA Consumable 41963404 ID-K Type C5 ODA Consumable 41963405...
  • Page 181 Oki Data CONFIDENTIAL Table 8-1-3/3 Recommended Q’ty/Year Patrs No. Name Q’ty Remarks /Unit 1000 2000 41884009 PCB Assy-TIG-3 600dpi 41884019 PCB Assy-TIG-2 1200dpi 8164323M0000 EEPROM(CU) 42277504 Board-CRF(PX713[1200]) C9500 42277508 Board-CRF(PX713[600]) C9300 41437436 Board-Memory 64MB APS Option 41437437 Board-Memory 128MB APS Option...
  • Page 182 Oki Data CONFIDENTIAL Figure 8-2 182 / 41956001TH Rev.1...

  • Page 183: Top Cover Assembly

    Oki Data CONFIDENTIAL Table 8-2 Top Cover Assembly Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 41484401 Cover Assy-Stacker 41970801 LED Head 1200dpi 1200dpi 41971201 LED Head 600dpi 600dpi 42216201 LED Assy Spring 42124802 LED control PWB 1200dpi...
  • Page 184 Oki Data CONFIDENTIAL Figure 8-3-1/2 184 / 41956001TH Rev.1...
  • Page 185 Oki Data CONFIDENTIAL Figure 8-3-2/2 185 / 41956001TH Rev.1...

  • Page 186: Printer Unit Chassis

    Oki Data CONFIDENTIAL Table 8-3-1/2 Printer Unit Chassis Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 41189701 Drum contact Assy 41483206 Registration Roller Assy (A) 41483301 Registration Roller Assy (B) 41628401 Registration Drive Gear (A) 41187102 Registration Clutch...
  • Page 187 Oki Data CONFIDENTIAL Table 8-3-2/2 Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 2381023P0004 HV Tape Harness 41500101 Power Supply Insulation 4PB4013-3100P006 Screw (M3 6) PSW4-8C Screw (M4 8) 4PB4083-2500P008 Screw (T3 8) 41346301 Transfer Contact Assy 41589501...
  • Page 188 Oki Data CONFIDENTIAL Figure 8-4-1/2 188 / 41956001TH Rev.1...
  • Page 189 Oki Data CONFIDENTIAL Figure 8-4-2/2 189 / 41956001TH Rev.1...
  • Page 190 Oki Data CONFIDENTIAL Table 8-4 Paper Tray Guide Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 41481306 Guide-Assy-R-1st 41766501 Roller-Feed 41488401 Roller-Feed-A3 41880101 Motor-Pulse(Hop) 41515701 Board-A73 41503001 Gear.Assy-Clutch(2pin) 41502601 Rubber Foot 41950401 Paper Size Sensing PWB 2201000P0140 Connector...
  • Page 191 Oki Data CONFIDENTIAL Figure 8-5 191 / 41956001TH Rev.1...
  • Page 192 Oki Data CONFIDENTIAL Table 8-5 Duplex Unit Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 41945701 Duplex Unit 41945703 Duplex Unit 41945707 Duplex Unit 4PB4043-4718P001 Screw (SP3 10) 4PB4083-2500P008 Screw (T3 8) 4PB4013-3100P006 Screw (M3 6) 192 /...

  • Page 193: Appendix A Interface Specifications

    Oki Data CONFIDENTIAL APPENDIX A INTERFACE SPECIFICATIONS 1. Parallel Interface Specifications 1.1 Parallel Interface Item Description Mode Compatibility mode, Nibble mode, ECP mode Data bit length 8 bits: Compatibility mode, 4bits: Nibble mode,9 bits: ECP mode 1.2 Parallel Interface Connector and Cable...
  • Page 194 Oki Data CONFIDENTIAL 1.4 Timing Charts Compatible mode a) Data receiving timing PARALLEL DATA (DATA BITs 1 to 8) 0.5 s min. 0.5 s min. 0.5 s min. nStrobe 0.5 s min. 0.5 s max. BUSY 0 min. 0 min.
  • Page 195 Oki Data CONFIDENTIAL 1.5 Parallel I/F Signals Table 8-1 shows interface signal names and pin numbers. Table 8-1 Signals Pin No. Signal Name Signal Direction Functions Nstrobe (HostClk) Pulse for reading data in at trailing edge. DATA 1 DATA 2 DATA 3 8-bit parallel data.

  • Page 196: Universal Serial Bus (Usb) Interface Specifications

    Oki Data CONFIDENTIAL 2. Universal Serial Bus (USB) Interface Specifications 2.1 USB Interface (1) Basic specifications Conforms to USB specification, revision 1.1. (2) Transmission mode Full speed (max. 12 Mbps + 0.25%) (3) Power Control Self-power device 2.2 USB Interface Connector and Cable...

  • Page 197: Appendix B 2Nd/3Rd Tray, Hight Capacity Tray Unit

    Oki Data CONFIDENTIAL APPENDIX B 2ND/3RD TRAY, HIGHT CAPACITY TRAY UNIT 2nd Tray 1. Control PWB, Paper Size Sensor PWB. (1) Unscrew the five screws 1 to remove the cover-rear-opt 2. (2) Unscrew the four screws 3 to remove the cover-side (L)-opt 4.
  • Page 198 Oki Data CONFIDENTIAL 2. Motor-Geared (1) Unscrew the five screws 1 to remove the great grip R 2. (2) Remove the six screws 3 to remove the feed unit 4. (3) Remove the three screws 5 to demount the motor-geared 6.
  • Page 199 Oki Data CONFIDENTIAL 3. Transport Clutch (1) Remove the motor-geared (see section 2). (2) Unscrew the four screws 1 to remove the motor Assy 2. (3) Remove the E ring 3 to detach the transport clutch 4. 199 / 41956001TH Rev.1...
  • Page 200 Oki Data CONFIDENTIAL 4. Pickup Clutch (1) Remove the geared motor (see section 2). (2) Unscrew the four screws 1 to remove the motor Assy 2. (3) Detach the pickup clutch 3. 200 / 41956001TH Rev.1...
  • Page 201 Oki Data CONFIDENTIAL 5. Roller-Feed (1) Remove the geared motor (see section 2). (2) Unscrew the two screws 1 to remove the feed Assy 2. (3) Unscrew the screw 3, remove the pillar sub 4, then detach the roller-feed 5.
  • Page 202 Oki Data CONFIDENTIAL 6. Sensor PWB (1) Remove the geared motor (see section 2). (2) Unscrew the two screws 1 to remove the feed Assy 2. (3) Remove the parts in the portion A and then in B and pull out the shaft 3 to remove the portion (4) Remove the sensor lever 4 to demount the sensor PWB 5.
  • Page 203 Oki Data CONFIDENTIAL 7. High Capacity Tray Unit (1) Remove all the cassettes 1. (2) Unscrew the five screws 2 to remove the cover-rear- pt 3. (3) Unscrew the four screws 4 to remove the cover-side (L)-opt 5. (4) Unscrew the two screws 6 to remove the cover-side (R) sub-opt 7.
  • Page 204 Oki Data CONFIDENTIAL High Capacity Tray Unit, 2nd/3rd Tray Unit (1/3) 204 / 41956001TH Rev.1...
  • Page 205 Oki Data CONFIDENTIAL High Capacity Tray Unit, 2nd/3rd Tray Unit (2/3) * Not attached to the lowest (thir 205 / 41956001TH Rev.1...
  • Page 206 Oki Data CONFIDENTIAL High Capacity Tray Unit, 2nd/3rd Tray Unit (3/3) High Capacity Tray Unit, 2nd/3rd Tray Unit Recommended Q’ty/Year Parts No. Name Q’ty Remarks /Unit 1000 2000 41949401 Guide Assy.-(R)-Opt 2nd tray,1st/2nd unit of HCF 41949403 Guide Assy.-(R)-Opt 3rd unit of HCF...

  • Page 207: Appendix C C7100/7300/9300/9500 Series Error Messages

    Oki Data CONFIDENTIAL APPENDIX C C7100/7300/9300/9500 SERIES ERROR MESSAGES C7100/7300/9300/9500 Series (Error messages) (Caution) * : Raise in the factory mode only. ** : Not raise in the standard config machines. LCD Messages Description Comments Code Ready Atten POWER OFF/ON Blink A network error is occurring.
  • Page 208 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten CHECK BELT UNIT Blink The belt unit is not correctly installed. 330:BELT UNIT MISSING CHECK IMAGE DRUM Blink The drum is not correctly installed. 340:YELLOW DRUM MISSING CHECK IMAGE DRUM...
  • Page 209 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten CHECK DUPLEX Blink Jam has occurred nearby DUPLEX 370:PAPER JAM unit.(Duplex Reversal) CHECK DUPLEX Blink Jam has occurred nearby DUPLEX 371:PAPER JAM unit.(Duplex Input) CHECK DUPLEX Blink Jam has occurred nearby DUPLEX 372:PAPER JAM unit.(Duplex Missfeed)
  • Page 210 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten INSTALL NEW TONER Blink Toner of (Yellow/Magenta/Cyan/Black) 410:YELLOW TONER EMPTY ends. Warning status takes effect at Cover INSTALL NEW TONER Blink Open/Close, while allowing printing at 411:MAGENTA TONER EMPTY least 20 pages...
  • Page 211 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten REMOVE THE PAPER Blink Paper that cannot be used in the tray is 450:TRAY1 UNSUITABLE SIZE set. (It takes a while until the status appears after you have closed the tray...
  • Page 212 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten CHANGE PAPER TO Blink The size of paper or media type in the mmmmmmmmm/ppppppp tray does not match the print data. 465:TRAY5 MEDIA MISMATCH Load mmmmm/ppppp paper in the tray...
  • Page 213 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten CHECK PAPER CASSETTE Blink Print request was made to Tray1~5, to 520:TRAY1 LIFT UP ERROR which Tray Lift Up Error has occurred. Lift Up Retry will take place when the...

  • Page 214: C7100/7300/9300/9500 Series (Error Messages : Related To Color, Media Detect)

    Oki Data CONFIDENTIAL C7100/7300/9300/9500 Series (Error messages : Related to Color, Media Detect) (Caution) * : Raise in the factory mode only. LCD Messages Description Comments Code Ready Atten Varies Varies Executing Auto Color Adjusting COLOR ADJUSTING Varies Varies Executing Auto Density Adjustment...
  • Page 215 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten DENSITY COLOR SENSOR Varies Light Density Adjustment Color Sensor ERROR Error.Error that does not occur at user level.Displayed only in FactoryMode. DENSITY BLACK Varies Light Density Adjustment Black Calibration CALIBRATION ERROR Error.Error that does not occur at user...
  • Page 216 Oki Data CONFIDENTIAL LCD Messages Description Comments Code Ready Atten REGISTRATION SENSOR Varies Light Registration Sensor Error(Magenta) ERROR3 This is not user-level error. REGISTRATION SENSOR Varies Light Registration Sensor Error(Cyan) ERROR4 This is not user-level error. REGISTRATION SENSOR Varies Light...

  • Page 217: C7100/7300/9300/9500 Series (Warning Messages : Related To Usage, Media)

    Oki Data CONFIDENTIAL C7100/7300/9300/9500 Series (Warning messages : Related to usage, media) LCD Messages Description Comments Code Ready Atten Varies Varies The paper in the selected tray is near ttttt NEAR END end. Varies Light Toner amount is low. Displayed in a...

  • Page 218: C7100/7300/9300/9500 Series (Warning Messages : Job Account)

    Oki Data CONFIDENTIAL C7100/7300/9300/9500 Series (Warning messages : Job Account) LCD Messages Description Comments Code Ready Atten FILE ACCESSING Varies Varies Accessing the File System (HDD/FLASH) on the CU board. CANCELLING(USER DENIED) Blink Varies Job cancellation due to no print permit.

  • Page 219: C7100/7300/9300/9500 Series (Other Warning)

    Oki Data CONFIDENTIAL C7100/7300/9300/9500 Series (Other Warning) (Caution) * : Raise in the factory mode only. LCD Messages Description Comments Code Ready Atten DISK FILE SYSTEM IS FULL Varies Light Disk-full is occurring. Because this is a temporary warning, it remains until the...
  • Page 220 Oki Data CONFIDENTIAL In case of occourrence of Disk Operation Error, error numbers will be displayed according to individual errors as follows: Errors LCD Display PJL Status Code GENERAL ERROR DISK FILE OPERATION FAILED 0 32000 VOLUME NOT AVAILABLE DISK FILE OPERATION FAILED 1...

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