Oki B4350 Service Manual
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Oki B4350 Service Manual

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Oki Data CONFIDENTIAL
B4350/B4350n

Service Manual

060125A

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Summary of Contents for Oki B4350

  • Page 1: Service Manual

    Oki Data CONFIDENTIAL B4350/B4350n Service Manual 060125A...
  • Page 2 Oki Data CONFIDENTIAL Document Revision History Corrected items Person in Rev.No. Date charge Page Description of change 2004-04-01 ISSUE ME5 Ono 42641101TH Rev.1...
  • Page 3 Oki Data CONFIDENTIAL PREFACE This Maintenance Manual describes the field maintenance methods for B4350 Monochrome LED Page Printers. This manual is written for use by service persons. Please note that you should refer to the Printer Handbook for the handling and operating methods of the equipment.

  • Page 4: Table Of Contents

    Oki Data CONFIDENTIAL CONTENTS 1. CONFIGURATION ....................7 1.1 System Configuration ..................7 1.2 Printer Configuration ..................8 1.3 Optional Configuration ..................9 1.4 Specification ....................11 1.5 Safety Standards .................... 13 1.5.1 Certification Label ...................... 13 1.5.2 Warning Label ......................13 1.5.3...
  • Page 5 Oki Data CONFIDENTIAL 4.2 Cleaning......................50 4.2.1 Cleaning of LED Lens Array ..................50 4.2.2 Cleaning Page Function .................... 51 5. TROUBLESHOOTING PROCEDURES ..............52 5.1 Troubleshooting Tips ..................52 5.2 Points to Check before Correcting Image Problems........52 5.3 Tips for Correcting Image Problems ............... 52 5.4 Preparation for Troubleshooting ..............
  • Page 6 Oki Data CONFIDENTIAL APPENDIX G HIGH CAPACITY SECOND PAPER FEEDER ......... 138 OUTLINE ...................... 138 Functions ......................... 138 External View and Component Names ..............138 MECHANISM DESCRIPTION ..............139 General Mechanism ....................139 Hopper Mechanism ....................139 PARTS REPLACEMENT ................140 Precautions Concerning Parts Replacement ............

  • Page 7: Configuration

    Oki Data CONFIDENTIAL CONFIGURATION System Configuration B4350 consists of control and engine blocks in the standard configuration, as shown in Figure 1-1. In addition, the options marked with asterisk(*) are available. LCD : 1 LED : 1 Operator Panel SW : 8...

  • Page 8: Printer Configuration

    Oki Data CONFIDENTIAL Printer Configuration The printer unit consists of the following hardware components: • Electrophotographic Processor • Paper Feeder • Controller • Operator Panel • Power Supply Unit The printer unit configuration is shown in Figure 1-2. Upper cover...

  • Page 9: Optional Configuration

    Oki Data CONFIDENTIAL Optional Configuration The options shown below are available for use with B4350. These are available separately from the printer unit. (1) High Capacity Second Paper Feeder (3) RS-232C Serial Interface Board 42641101TH Rev.1...
  • Page 10 Oki Data CONFIDENTIAL (4) Network Interface Board(Soft NIC CARD) (5) SDRAM DIMM (i) 16MB (ii) 32MB (iii) 64MB (iv) 128MB (v) 256MB (6) Flash DIMM (i) 1MB (ii) 8MB (iii) 16MB (7) Postscript 3 Emulation DIMM 10 / 42641101TH Rev.1...

  • Page 11: Specification

    Oki Data CONFIDENTIAL Specification (1) Type Desktop (2) External dimensions Height 8.5” (215 mm) Width 14.0” (355 mm) Depth 15.7” (400 mm) (3) Weight Approx. 9 kg (4) Developing method Dry electrophotography Exposing method LED stationary head (5) Paper used <Type>...
  • Page 12 Oki Data CONFIDENTIAL (10) Power input 110~127 VAC ± 10% 220~240 VAC ± 10% (11) Power consumption 120VAC 230VAC Peak Approx. 700W Approx. 700W Typical operation Approx. 360W Approx. 360W Idle Approx. 68W Approx. 66W Power save mode : Approx. 9W Approx.

  • Page 13: Safety Standards

    Oki Data CONFIDENTIAL Safety Standards 1.5.1 Certification Label The safety certification label is affixed to the printer in the position described below. ODA AC : 120V model Serial No. Made In China 1.5.2 Warning Label The warning labels are affixed to the sections which may cause bodily injury.

  • Page 14: Warning/Caution Marking

    Oki Data CONFIDENTIAL 1.5.3 Warning/Caution Marking The following warning and caution markings are made on the power supply/sensor board. CAUTION ENGLISH Heatsink and transformer core present risk of electric shock. Test before touching. 14 / 42641101TH Rev.1...

  • Page 15: Parts Replacement

    Oki Data CONFIDENTIAL PARTS REPLACEMENT The section explains the procedures for replacement of parts, assemblies, and units in the field. Only the disassembly procedures are explained here. For reassembly, reverse the disassembly procedure. Precautions for Parts Replacement (1) Before starting to replace parts, remove the AC cord and interface cable.
  • Page 16 Oki Data CONFIDENTIAL [Service Tools] The tools required for field replacement of printed circuit boards, assemblies and units are listed in Table 2-1. Table 2-1 Service Tools Service Tools Q’ ty Application Remarks No. 1-100 Philips screwdriver 2~2.5 mm screws No.

  • Page 17: Parts Layout

    Oki Data CONFIDENTIAL Parts Layout This section explains the layout of main components of the equipment. [Lower base unit] Stacker cover assy Eject roller assy Pulse motor Back-up roller View A (main/drum) Pulse motor Registration (registration) Transfer roller roller Assy...
  • Page 18 Oki Data CONFIDENTIAL [Upper cover unit] Upper cover Figure 2-2 18 / 42641101TH Rev.1...
  • Page 19 Oki Data CONFIDENTIAL [Base unit] Operator panel assy Face up stacker assy Power supply/sensor board (Low voltage) High voltage / DC fan assy sensor board Network Interface board Main control board Cassette guide (L) Assy Cassette guide (R) Assy Paper cassette...

  • Page 20: How To Change Parts

    Oki Data CONFIDENTIAL How to Change Parts This section explains how to change parts and assemblies listed in the disassembly diagram below. In the parts replacement procedure, those parts marked with the part number inside with white letters are RSPL parts.

  • Page 21: Upper Cover Assy

    Oki Data CONFIDENTIAL 2.3.1 Upper Cover Assy (1) With the power switch turned off, unplug the AC power cord from the outlet. (2) Disconnect the interface cable 1. (3) Press the button 2 on right side of the Upper cover and open the stacker cover assy 3.

  • Page 22: Led Head

    Oki Data CONFIDENTIAL 2.3.2 LED Head (1) Press the button on right side of the upper cover and open the stacker cover assy 1. (2) Open the hook section on the left side of the head holder and remove the LED head 2.

  • Page 23: Operator Panel Assy

    Oki Data CONFIDENTIAL 2.3.3 Operator Panel Assy (1) Unlock two latches on the upper cover from the rear side, lift the operator panel assy 1 from the back and remove it. (2) Remove the Sumi card (operator panel) 2 from the connector (CN1) 3.

  • Page 24: Lower Base Unit

    Oki Data CONFIDENTIAL 2.3.4 Lower Base Unit (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.7). (4) Remove the transfer roller assy (see 2.3.14).

  • Page 25: Pulse Motor (Main/Drum)

    Oki Data CONFIDENTIAL 2.3.5 Pulse Motor (Main/Drum) (1) Remove the upper cover assy (see 2.3.1). (2) Remove the lower base unit (see 2.3.4). (3) Remove two screws 1 and remove the pulse motor (main/drum) 2 from the motor bracket 3.

  • Page 26: Pulse Motor (Registration)

    Oki Data CONFIDENTIAL 2.3.6 Pulse Motor (Registration) (1) Remove the upper cover assy (see 2.3.1). (2) Remove the lower base unit (see 2.3.4). (3) Remove two screws 1 and remove the pulse motor (registration) 2 from the motor bracket 3.

  • Page 27: Pulse Motor (Hopping)

    Oki Data CONFIDENTIAL 2.3.7 Pulse Motor (Hopping) (1) Remove the upper cover assy (see 2.3.1). (2) Remove the lower base unit (see 2.3.4). (3) Remove two screws 1 and remove the pulse motor (hopping) 2 from the motor bracket 3.

  • Page 28: Face Up Stacker Assy

    Oki Data CONFIDENTIAL 2.3.8 Face Up Stacker Assy (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove three screws 1 and remove both the shield plate 2 and face up stacker 3 together.

  • Page 29: Eject Roller Assy

    Oki Data CONFIDENTIAL 2.3.9 Eject Roller Assy (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the stacker cover assy (see 2.3.12).

  • Page 30: Motor Assy

    Oki Data CONFIDENTIAL 2.3.10 Motor Assy (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4). (5) Stand the lower base unit on its side as shown, and unlock two latches, then remove the motor assy (6) Remove screw 2 and remove the bracket-Motor-Sub 3 from the Motor bracket.

  • Page 31: Hopping Roller Shaft Assy

    Oki Data CONFIDENTIAL 2.3.11 Hopping Roller Shaft Assy (1) Remove the upper cover (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4).

  • Page 32: Stacker Cover Assy

    Oki Data CONFIDENTIAL 2.3.12 Stacker Cover Assy (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the motor assy (see 2.3.10). (5) Remove the reset lever R 1.

  • Page 33: Registration Roller

    Oki Data CONFIDENTIAL 2.3.13 Registration Roller (1) Remove the upper cover (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4). (5) Remove the motor assy (see 2.3.10).

  • Page 34: Roller Transfer Assy

    Oki Data CONFIDENTIAL 2.3.14 Roller Transfer Assy (1) With the power switch turned off, unplug the AC cord from the outlet. (2) Open the stacker cover. (3) Remove the spacer 1. (4) Release the roller transfer assy 2 by unlocking two latches of the bearing TR (never apply excessive force when unlocking the latch) and slide the roller transfer assy left to remove the gear from the bracket.

  • Page 35: Fusing Unit

    Oki Data CONFIDENTIAL 2.3.15 Fusing Unit (1) Remove the upper cover (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4). (5) Remove the stacker cover assy (see 2.3.12).

  • Page 36: Back-Up Roller

    Oki Data CONFIDENTIAL 2.3.16 Back-up Roller (1) Remove the fusing unit assy (see 2.3.15). (2) Lift the left side of the back-up roller 1, and pull it out to the left side (at this time, two bearing Holders (back-up) 2 and the bias springs (back-up) 3and the two ball-bearings 4, washer C 5 will also come off).

  • Page 37: Sensor Plate (Inlet)

    Oki Data CONFIDENTIAL 2.3.17 Sensor Plate (Inlet) (1) Remove the upper cover (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4). (5) Unlock the latch at the left side of the paper guide (R) 1 and remove the paper guide (R) 1.

  • Page 38: Sensor Plate (Outlet), Sensor Wire Assy

    Oki Data CONFIDENTIAL 2.3.18 Sensor Plate (Outlet), Sensor Wire Assy (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the eject roller assy (see 2.3.9). (4) Remove the face up stacker assy (see 2.3.8).

  • Page 39: Manual Feed Guide Assy

    Oki Data CONFIDENTIAL 2.3.19 Manual Feed Guide Assy (1) Remove the upper cover assy (see 2.3.1). (2) Open the manual feed guide assy 1, and release the engagement on both sides with the main unit by carefully bending the manual feed guide assy 1.

  • Page 40: Sensor Plate (Paper Supply)

    Oki Data CONFIDENTIAL 2.3.20 Sensor Plate (Paper Supply) (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4).

  • Page 41: Pcb

    Oki Data CONFIDENTIAL 2.3.21 GRV-2 PCB (1) Remove the upper cover assy (see 2.3.1). (2) Remove the operator panel assy (see 2.3.3). (3) Remove the face up stacker assy (see 2.3.8). (4) Remove the lower base unit (see 2.3.4). (5) Remove three screws 1 and two screws 2.

  • Page 42: Power Supply Board And High Voltage/Sensor Board

    Oki Data CONFIDENTIAL 2.3.22 Power Supply Board and High Voltage/Sensor Board (1) Remove the upper cover assy (see 2.3.1). (2) Remove the lower base unit (see 2.3.4). (3) Remove two screws 1 and the guide plate 2. (4) Remove the AC inlet 3 from the guide plate 2.

  • Page 43: Cassette Guide L Assy

    Oki Data CONFIDENTIAL 2.3.23 Cassette Guide L Assy (1) Remove the paper cassette. (2) Remove the upper cover assy (see 2.3.1). (3) Remove the lower base unit (see 2.3.4). (4) Remove two screws 1, and remove the beam plates 2.

  • Page 44: Cassette Guide R Assy

    Oki Data CONFIDENTIAL 2.3.24 Cassette Guide R Assy (1) Remove the paper cassette. (2) Remove the upper cover assy (see 2.3.1). (3) Remove the lower base unit (see 2.3.4). (4) Remove two screws 1, and remove the beam plates 2.

  • Page 45: Adjustment

    Oki Data CONFIDENTIAL ADJUSTMENT This chapter provides explanations concerning the adjustment necessary when replacing a part. The adjustment is made by changing the parameter value set in EEPROM on the main control board. The parameter can be set by the key operation from the operator panel. This printer has three kinds of maintenance modes, and it is necessary to select one of the modes when replacing any parts.

  • Page 46: System Maintenance Mode (System Maintenance Menu)

    Oki Data CONFIDENTIAL Category Item Value Functions OP MENU MEMORY ENABLE Sets Category MEMORY MENU Enable/Disable. DISABLE Set to Disable, Category MEMORY MENU of User Menu is not displayed. ADJUST ENABLE Sets Category SYSTEM ADJUST MENU Enable/Disable. DISABLE Set to Disable, Category SYSTEM ADJUST MENU of User Menu is not displayed.
  • Page 47 Oki Data CONFIDENTIAL Category Item Value Functions EMULATE ENABLE Changes the default PDL for each brand. PDLs that are disabled in this DISABLE menu will not be displayed at EMULATE of User Menu or OP MENU of Admin Menu. (No specific to PCL XL is provided; thus, when DISABLE...

  • Page 48: Eeprom Initial Setting Range For Events

    Oki Data CONFIDENTIAL 3.1.3 EEPROM Initial Setting Range for Events As for initialization of EEPROM, ranges differ the whole phenomenon. "O" is initialized. "–" is not initialized. Table 3-1 The Initial-Setting domain of EEPROM CU EEPROM Area PU EEPROM Area...

  • Page 49: Adjustment When Replacing A Part

    Oki Data CONFIDENTIAL Adjustment When Replacing a Part Adjustment is necessary when replacing any of the following parts. Part Replaced Adjustment Image Drum Cartridge Reset the image drum counter (refer to User's manual). Main Control Board EEPROM data Upload / Download 3.2.1...

  • Page 50: Periodical Maintenance

    Oki Data CONFIDENTIAL PERIODICAL MAINTENANCE Periodical Replacement Parts The parts are to be replaced periodically as specified below: Part name Condition for replacement Cleaning Remarks Toner cartridge 2.5K About 2,500 sheets of paper have been printed. LED head Consumables (Type 9) Toner cartridge 6K About 6,000 sheets of paper have been printed.

  • Page 51: Cleaning Page Function

    Oki Data CONFIDENTIAL 4.2.2 Cleaning Page Function There is a charge roller cleaning function with this printer, which can be executed by the user. (1) 1 Press the MENU key several times, and the LCD displays "MAINTE MENU". 2 Press the ITEM key, and the LCD displays "CLEANING PRINT".

  • Page 52: Troubleshooting Procedures

    Oki Data CONFIDENTIAL TROUBLESHOOTING PROCEDURES Troubleshooting Tips (1) Check the troubleshooting section in the Printer Handbook. (2) Gather as much information about the situation as possible. (3) Inspect the equipment under the conditions close to those in which the problem had occurred.

  • Page 53: Preparation For Troubleshooting

    Oki Data CONFIDENTIAL Preparation for Troubleshooting (1) Operator panel display The failure status of the printer is displayed by the liquid crystal display (LCD) of the operator panel. Take proper corrective action as directed by messages which are being displayed on the LCD.
  • Page 54 Oki Data CONFIDENTIAL The following are the meaning of the symbols in the LCD display. “TRAY2” is indicated only when the second tray is set, and “MPF” is displayed only when the multipurpose feeder is set. xxxx: Emulation (AUTO, PCL, PSE, PPR, FX)
  • Page 55 Oki Data CONFIDENTIAL Table 5-1 (2/5) Descroption Status level Warn- Varies Toner near empty. (This state occurs after printing 100 sheets from TONEREMP TONERLOW.) Displayed combined with other messages in the first line. Not displayed when “CHG DRUM” for drum life is displayed, however.
  • Page 56 Oki Data CONFIDENTIAL Table 5-1 (3/5) Descroption Status level Error LOAD mmm No Light Indicates that a print request was sent to the tttt tray that has tttt EMPTY become empty. A message for setting mmmm paper. TRAY1 TRAY2 * Scroll display.
  • Page 57 Oki Data CONFIDENTIAL Table 5-1 (4/5) Descroption Status level Error OPEN UPPER COVER No Light Jam occurred when paper was exiting. EXIT JAM Open the cover and remove the paper inside the printer. Close the cover to continue for Recovery Print.
  • Page 58 Oki Data CONFIDENTIAL Table 5-1 (5/5) Descroption Status level ERR nnn No Light Power Supply Fan Motor Error (Reserved) Humidity Sensor (Reserved) Temperature Sensor (Reserved) Multi purpose tray home error (Reserved) LED Head Over Temperature LED Head Missing, Color: Black (Reserved)

  • Page 59: Lcd Message Troubleshooting

    Oki Data CONFIDENTIAL 5.5.2 LCD Message Troubleshooting If the problems cannot be corrected by using the LCD status message/problem list, follow the troubleshooting flowcharts given here to deal with them. Trouble Flowchart number The printer does not work normally after the power is turned on.
  • Page 60 Oki Data CONFIDENTIAL The printer does not work normally after the power is turned on. • Turn the power off, then back on. • Is all black message being displayed by the LCD display? • No Is the AC cord being connected properly? •...

  • Page 61: Paper Input Jam

    Oki Data CONFIDENTIAL [JAM error] Paper input jam • Does the JAM error occur when the power is turned on? • Yes Is the paper at the inlet sensor? • Yes Remove the paper. • No Is the operation of the inlet sensor plate normal (moves freely when it is touched)? •...
  • Page 62 Oki Data CONFIDENTIAL [JAM error] Paper feed jam • Does the paper feed jam occur when the power is turned on? • Yes Is the paper on the paper sensor plate? • Yes Remove the paper. • No Is the operation of the paper sensor plate normal (moves freely when it is touched)? •...

  • Page 63: Paper Exit Jam

    Oki Data CONFIDENTIAL 2-2-a • No Check the gears (transfer roller gear, idle gear and reduction gear). • Yes Is the fusing unit being installed properly? • No Install the fusing unit properly. • Yes Is the image drum cartridge being set properly? •...

  • Page 64: Paper Size Error

    Oki Data CONFIDENTIAL Paper size error • Is paper of the specified size being used? • No Use paper of the specified size. • Yes Are inlet sensor plates 1 and 2 operating properly (moves freely when they are touched)? •...
  • Page 65 Oki Data CONFIDENTIAL Fusing unit error (ERROR 170) (ERROR 171) (ERROR 172) (ERROR 173) • Turn the power off, then back on again. • Yes Is the thermistor open or shorted? Measure the resistance between thermistor contacts (heater contacts 120V/2Ω or 240V/7Ω, and thermistor contacts 200KΩ at room temperature) (see Figure 5-2).
  • Page 66 Oki Data CONFIDENTIAL Synchronous serial I/O error or I/F timeout between printer and optional tray (ERROR 180, 182) • Is an option tray (High Capacity Second Paper Feeder or Multi Purpose Feeder) being used? • Yes Is the cable between the main control board and the optional tray being connected properly? •...

  • Page 67: Image Troubleshooting

    Oki Data CONFIDENTIAL 5.5.3 Image Troubleshooting Procedures for troubleshooting for abnormal image printouts are explained below. Figure 5-3 below shows typical abnormal images. Problem Flowchart number Images are light or blurred entirely (Figure 5-3 Dark background density (Figure 5-3 Blank paper is output (Figure 5-3...
  • Page 68 Oki Data CONFIDENTIAL Images are light or blurred entirely. • Is toner low (is the TONER LOW message displayed)? • Yes Supply toner. • No Is paper of the specified grade being used? • No Use paper of the specified grade.
  • Page 69 Oki Data CONFIDENTIAL Dark background density • Has the image drum been exposed to external light? • Yes Install the image drum in the printer and wait about 30 minutes. • No Perform the cleaning page function (see Section 4.2.2).

  • Page 70: Black Vertical Belts Or Stripes

    Oki Data CONFIDENTIAL Black vertical belts or stripes • Perform the cleaning page function (see Section 4.2.2). • Has the problem been solved? • Yes End. • No Replace the image drum cartridge. • Has the problem been solved? • Yes Note: After replacing the image drum cartridge, reset the drum counter (see User's Manual).
  • Page 71 Oki Data CONFIDENTIAL Prints voids • Is the contact plate of the transfer roller in proper contact with the high voltage/sensor board (see Figure 5-5)? • No Adjust the contact plate so that it touches the high voltage/sensor board and the shaft of the transfer roller properly.
  • Page 72 Oki Data CONFIDENTIAL Poor fusing (images are blurred or peels off when the printed characters and im- ages on the paper are touched by hand) • Is paper of the specified grade being used? • No Use paper of the specified grade.
  • Page 73 Oki Data CONFIDENTIAL White vertical belts or streaks • Are the LED lens dirty? • Yes Clean the LED lens. • No Is the contact plate of the transfer roller in proper contact with the high voltage/sensor board (see Figure 5-5)? •...
  • Page 74 Oki Data CONFIDENTIAL Figure 5-4 74 / 42641101TH Rev.1...
  • Page 75 Oki Data CONFIDENTIAL Contact plate for transfer roller High voltage/sensor board Contact Figure 5-5 75 / 42641101TH Rev.1...

  • Page 76: Wiring Diagram

    Oki Data CONFIDENTIAL WIRING DIAGRAM Interconnect Signal Diagram 76 / 42641101TH Rev.1...

  • Page 77: Pcb Layout And Connector Signal List

    Oki Data CONFIDENTIAL PCB Layout and Connector Signal List (1) Main Control Board (GRV-2 PCB) Printer front side LED Head Operator panel Printer front side Contact face Contact face Printer front side 14 – 1 1– 26 77 / 42641101TH Rev.1...
  • Page 78 Oki Data CONFIDENTIAL (2) Power Supply Board/High Voltage and Sensor Board 78 / 42641101TH Rev.1...
  • Page 79 Oki Data CONFIDENTIAL • HEAD Connector Pin Assignment (To LED head) PIN NO. I/O* Signal Function Ground for Logic HDCLK-P Clock HDCLK-N Clock Ground for Logic HDLD Load HDSTB1 Hsync/CSN HDDATA3 Data 3 HDDATA2 Data 2 HDDATA1 Data 1 HDDATA0...
  • Page 80 Oki Data CONFIDENTIAL • LCDPNL Connector Pin Assignment (To Operator Panel) PIN NO. I/O* Signal Function LED-P LED ON SW-DATA1 Switch Data 1 SW-DATA0 Switch Data 0 LCD_D3 LCD Data 3 Ground LCD_D2 LCD Data 2 LCD_D1 LCD Data 1...
  • Page 81 Oki Data CONFIDENTIAL • 2NDTRAY Connector Pin Assignment (To 2nd Tray) PIN NO. I/O* Signal Function OPPAP-N Paper Sensor 1 OPSCK-N Clock OPSD-N Data OPSDP-N OPT send data Analog Ground +38V +38V Logic Ground +5VA * I: In O: Out...
  • Page 82 Oki Data CONFIDENTIAL • HVIF Connector Pin Assignment (To High Voltage Unit/Sensor Board) PIN NO. I/O* Signal Function WRSNS-N Write Sensor IN1SNS-N Paper Sensor 1 TONER-N Toner Sensor IN2SNS-N Paper Sensor 2 PAPER-N Paper Out Sensor Ground SBPWN-P SB2 Output...
  • Page 83 Oki Data CONFIDENTIAL • PW_1 Connector Pin Assignment (To Power Supply Unit) PIN NO. I/O* Signal Function +38V +38V +38V +38V Analog Ground Analog Ground 0VPHD Ground for LED 0VPHD Ground for LED HEAD +5V for LED HEAD +5V for LED...
  • Page 84 Oki Data CONFIDENTIAL • OPTION Connector Pin Assignment (To Option Board [Network or RS232C]) Pin No. I/O* Signal Function Pin No. I/O* Signal Function Ground Ground Ground Ground PPGNT0-N Bus Grant (PCI) PPPERR-N Parity Error (PCI) PPDVSL-N Device select (PCI)
  • Page 85 Oki Data CONFIDENTIAL • USB Connector Pin Assignment (USB I/F) PIN NO. I/O* Signal Description Ground * I: In O: Out C: Common • CENT Connector Pin Assignment (IEEE1284 I/F) Pin No. I/O* Signal Function Pin No. I/O* Signal Function...
  • Page 86 Oki Data CONFIDENTIAL • HM Connector Pin Assignment (To Hopping Motor) PIN NO. I/O* Signal Function HMPH1-P Coil 1-P HMPH1-N Coil 1-N HMPH2-P Coil 2-P HMPH2-N Coil 2-N * O: Out • RM Connector Pin Assignment (To Resistration Motor) PIN NO.
  • Page 87 Oki Data CONFIDENTIAL • ROM_DIMM Connector Pin Assignment Pin No. I/O* Signal Function Pin No. I/O* Signal Function Ground DBUS0 Data Bus 0 N.C. DBUS7 Data Bus 7 N.C. Ground N.C. Ground N.C. WBEN0 Write Enable N.C. DBUS15 Data Bus 15 N.C.
  • Page 88 Oki Data CONFIDENTIAL • RAM_DIMM Connector Pin Assignment Pin No. I/O* Signal Function Pin No. I/O* Signal Function Ground SAD8 Address Bus 8 N.C. SAD13 Address Bus 13 N.C. Ground N.C. Ground N.C. SAD9 Address Bus 9 N.C. SAD12 Address Bus 12 N.C.

  • Page 89: Resistance Check

    Oki Data CONFIDENTIAL Resistance Check 89 / 42641101TH Rev.1...
  • Page 90 Oki Data CONFIDENTIAL 90 / 42641101TH Rev.1...

  • Page 91: Appendix Ars-232C Serial Interface (Option)

    Oki Data CONFIDENTIAL APPENDIX A RS-232C SERIAL INTERFACE (option) 1) Connector • Printer side 25-pin receptacle Type DB-25S (made by Canon) or equivalent • Cable side 25-pin plug Type DB-25S (made by Canon) Shell Type DB-C8-J10-F2-1 (made by Nihon Kouku Denshi) or equivalent Note: Plug shall be fixable with a lock screw.
  • Page 92 Oki Data CONFIDENTIAL 4) Signal Level • MARK polarity : -3V to -15V (LOGIC = 1) • SPACE polarity : +3V to +15V (LOGIC = 0) 5) Interface Circuit Receiving Circuit 14C232 or equivalent OUTPUT INPUT +12V -12V INPUT Sending Circuit...
  • Page 93 Oki Data CONFIDENTIAL 8) Interface Parameter Setting Press MENU key several times. Press ITEM key to display the item on the LCD to set up. Press VALUE key to display the value on the LCD to set up. Press SELECT key, and display "*" mark on the right side of the value: By pressing the ON LINE key, menu setting mode is completed and the printer returns to on- line state.
  • Page 94 Oki Data CONFIDENTIAL Item Baud Rate Contents of Display Function 300 baud 600 baud BAUDRATE Ready 1200 1200 baud 2400 2400 baud 4800 4800 baud 9600 9600 baud 19200 19200 baud 38400 38400 baud 57600 57600 baud 76800 76800 baud...
  • Page 95 Oki Data CONFIDENTIAL Press the ITEM + key. Item RS232C I/F OFF-LINE RECEIVE Contents of Display Function OFF REC Ready ENABLE ENABLE DISABLE DISABLE Factory Setting: ENABLE Press the ON LINE key. Setting completed. ON-LINE Ready XXX : PCL, AUTO, PSE, HEX DUMP, PRR or FX 95 / 42641101TH Rev.1...

  • Page 96: Appendix B Centronics Parallel Interface

    2) Cable • Cable length 6 ft (1.8 m) max. (A Shielded cable composed of twisted pair wires is recommended for noise prevention.) Note: Cable is not supplied with the printer, and is not available from Oki. 96 / 42641101TH Rev.1...
  • Page 97 Oki Data CONFIDENTIAL 3) Table of Parallel I/F Signals Pin No. Signal name Signal direction Functions DATA STROBE Parallel data sampling strobe DATA BIT - 1 DATA BIT - 2 DATA BIT - 3 DATA BIT - 4 PR Parallel input and output data...
  • Page 98 Oki Data CONFIDENTIAL 4) Signal Level • INPUT Low : 0 V to +0.4 V High : +2.4 V to 5.0 V • OUTPUT Low : 0 V to +0.4 V High : +2.0 V to 5.0 V 5) Specifications...
  • Page 99 Oki Data CONFIDENTIAL 7) Timing charts a) Power-ON (Menu Setting: PARALLEL=ENABLE) Power ON Notice of Transition to On-line Printer Power OFF Initializing H/W Initializing F/W Idle Status PError nAck Busy nFault Select b) Power-ON (Menu Setting: PARALLEL=DISABLE) Power ON Printer...
  • Page 100 Oki Data CONFIDENTIAL d) Data Reception (Menu Setting: Ack/Busy Timing=Ack while Busy) nStrobe Busy nAck T(ACK)/2 T(ACK)/2 * The T (ACK) values are the same as those shown in the section c). e) I-Prime (Not at menu-set I-PRIME=DISABLE) I/F Initialization...
  • Page 101 Oki Data CONFIDENTIAL g) Paper-End Notice of Transition to Paper-End Notice of Transition to On-line Printer Idle Paper-End On-line Status Busy PError nFault Select h) Warning (Paper-end state is excluded) Notice of Transition to Warning Notice of Transition to On-line...
  • Page 102 Oki Data CONFIDENTIAL Interface Parameter Setting The following settings are possible by pressing the SELECT key, after selecting the display contents of the LCD of the operator panel by using the ITEM+ and ITEM- keys. Settings are retained even when the printer power is turned off.
  • Page 103 Oki Data CONFIDENTIAL Item Direction of Data Transfer BI–DIRCT Contents of Display Function Ready Bi-directional data transmission ENABLE Uni-directional data transmission DISABLE Factory Setting: ENABLE Press the ITEM + key. Item ECP Mode Contents of Display Function Ready ENABLE ENABLE...
  • Page 104 Oki Data CONFIDENTIAL Item I-PRIME Contents of Display Function I–PRIME Ready 3µ SEC Enabled with the 3µs nlnit signal 50µ SEC Enabled with the 50µs nlnit signal DISABLE DISABLE Factory Setting: DISABLE Press the ITEM + key. Item PARALLEL I/F OFF-LINE RECEIVE...

  • Page 105: Appendix C Universal Serial Bus (Usb)

    Oki Data CONFIDENTIAL APPENDIX C Universal Serial Bus (USB) Universal Serial Bus Specification Revision 2.0 full speed compliance. Connector • Printer Side : “B” Receptacle (Upstream Input to the USB Device) • Cable Side : Series “B” Plug Cable • Cable Length : Max 5m (A cable must be met USB Spec Rev 1.1 for normal operation)
  • Page 106 Oki Data CONFIDENTIAL Signal Level • Input / Output Level Parameter Symbol Min. Max. Units Input Levels : High (driven) High (floating) Output Levels : High (driven) Output Signal Crossover Voltage • Signaling Levels Signaling Levels Bus State Required Acceptable Differential "1"...
  • Page 107 Oki Data CONFIDENTIAL Timing Chart a) Packet Voltage Levels VOH (min) VIH (min) VIL (max) VOL (max) Bus Idle First Bit of Packet Bus Driven to Last Bit J State at end of Packet of EOP Floats Portion Bus Idle...
  • Page 108 Oki Data CONFIDENTIAL e) Differential-to-EOP Transition Skew and EOP Width Crossover Point TPERIOD Extended Crossover Points Differential Data Lines TxDEOP = -2ns~5ns Diff. Data-to- SE0 Skew N * TPERIOD + TxDEOP Source EOP Width: TFEOPT (160ns~175ns) Receiver EOP Width: TFEOPR (80ns~)
  • Page 109 Oki Data CONFIDENTIAL Interface Parameter Setting Press MENU key several times. Press ITEM key to display the item on the LCD to set up. Press VALUE key to display the value on the LCD to set up. Press SELECT key, and display "*" mark on the right side of the value: By pressing the ON LINE key, menu setting mode is completed and the printer returns to on- line state.
  • Page 110 Oki Data CONFIDENTIAL Item Sets Soft Reset command SOFT RST Contents of Display Function Ready ENABLE ENABLE DISABLE DISABLE Factory Setting: DISABLE Press the ITEM + key. Item USB I/F OFF-LINE RECEIVE OFF REC Contents of Display Function Ready ENABLE...

  • Page 111: Appendix Dloop Test (Rs-232C Interface)

    Oki Data CONFIDENTIAL APPENDIX D LOOP TEST (RS-232C INTERFACE) 1) Connect the test connector DB-25S made by Cannon or equivalent Test Connector Connection Diagram 2) Select "LOOP Test" in the system maintenance mode. The codes transmitted from the TD signals are comparatively checked with the data received from the RD signals.

  • Page 112: Appendix Ediagnostics Test

    Oki Data CONFIDENTIAL APPENDIX E DIAGNOSTICS TEST Maintenance Modes • The maintenance modes consist of the user maintenance mode which are released to the user, and the system and engine maintenance modes in the maintenance personnel level not released to the user.
  • Page 113 Oki Data CONFIDENTIAL Pressing Item+ or Item- key, menu is changed. Press the Item+ or Item- key. Sets All Category Enable/Disable OP MENU LCD display of User Menu. ENABLE * DISABLE Press the Value+ or Value- key. Sets Category INFORMATION INFO.
  • Page 114 Oki Data CONFIDENTIAL System Maintenance Mode • To enter the system maintenance mode, turn the power on while keeping the Menu/ITEM+/VALUE- /CANCEL keys pressed down. • This mode adopts the menu for function selection. • The system maintenance mode provides the following functions: (1) Oki User •...
  • Page 115 Oki Data CONFIDENTIAL LCD display Press the Value+ or Value- key. OKIUSER ODA * Sets brands. Selecting by the Value+ or Value- key. Press the Item+ or Item- key. JPOEM1 JPOEM2 If the Menu key is OEMA pressed menu change.
  • Page 116 Oki Data CONFIDENTIAL Pressing Item+ or Item- key, menu is changed. Sets dot shift in the horizontal direction. DOTSHIFT TRAY1 -4.0mm Press the -1.0mm * ˜ Press the Item+ Value+ or -1.5mm or Item- key. Value- key. -1.0mm -0.5mm 0.0mm +0.5mm...
  • Page 117 Oki Data CONFIDENTIAL Engine Maintenance Mode • To enter engine maintenance mode, enter system maintenance mode and press the Item+ key when "ENG DIAG" is displayed. • This mode adopts the menu for function selection. • The method for exit from this mode depends on the setting.
  • Page 118 Oki Data CONFIDENTIAL LCD display Press the Value+ or Value- key. Sets the LED head’s drive time.OPT HEAD LED HEAD Press the Value+ or Value- key. ˜ If the Item+ key is pressed menu change. ˜ Sets the strobe time in 600 × 1200DPI mode in the val- STRB TIM 0.50...
  • Page 119 Oki Data CONFIDENTIAL If the Menu key is pressed menu change. Press the Value+ or Value- key. Sets the amount of feeding paper from the 2nd tray. T2 POS 0 mm * (Sets the amount to TOF position). 0 mm...
  • Page 120 Oki Data CONFIDENTIAL CH V MIN Press the Value+ or Value- key. If the Menu key is pressed menu change. Press the Value+ or Value- key. Changes TR1_1’s current for reading the TR resistance TR1 CRNT value. Press the Value+ or Value- key.

  • Page 121: Appendix G High Capacity Second Paper Feeder

    Oki Data CONFIDENTIAL APPENDIX G HIGH CAPACITY SECOND PAPER FEEDER OUTLINE Functions The printer is mounted on top of this High Capacity Second Paper Feeder. The High Capacity Second Paper Feeder supplies paper automatically through the operation of pulse motor (hopping), which is driven by signals sent from the printer.

  • Page 122: Mechanism Description

    Oki Data CONFIDENTIAL MECHANISM DESCRIPTION General Mechanism The High Capacity Second Paper Feeder feeds the paper into the printer by receiving the signal from the printer, which drives the pulse motor inside the High Capacity Second Paper Feeder, and this motion is transmitted to rotate the one-way clutch of the hopping frame assembly.

  • Page 123: Parts Replacement

    Oki Data CONFIDENTIAL PARTS REPLACEMENT This section covers the procedures for the disassembly, reassembly and installations in the field. This section describes the disassembly procedures, and for reassembly procedures, basically proceed with the disassembly procedures in the reverse order. Precautions Concerning Parts Replacement (1) Parts replacements must be carried out, by first turning the printer power switch off “O”...

  • Page 124: Parts Layout

    Oki Data CONFIDENTIAL Parts Layout This section describes the layout of the main components. Cassette Assy Upper Plate Hopping Roller Assy Guide R (2nd) Assy (includes stepping motor and GRT PCB) One-way Clutch Gear Hopping Frame Assy Stepping Motor Guide L (2nd) Assy...

  • Page 125: Parts Replacement Methods

    Oki Data CONFIDENTIAL Parts Replacement Methods This section describes the parts replacement methods for the components listed in the disassembly order diagram below. High Capacity Paper Feeder Stepping motor (hopping) (3.3.1) GRT PCB (3.3.2) Hopping roller shaft assy and One-way clutch gear (3.3.3) 142 / 42641101TH Rev.1...

  • Page 126: Stepping Motor (Hopping)

    Oki Data CONFIDENTIAL 3.3.1 Stepping Motor (Hopping) (1) Turn the printer power switch off, pull out the AC cord from the outlet. Remove the printer off High Capacity Second Paper Feeder. (2) Take the paper cassette assy 1 out of High Capacity Second Paper Feeder.
  • Page 127 Oki Data CONFIDENTIAL (6) Remove three screws 9 which are holding the guide R (2nd) assy 0 to the bottom plate A. Remove the screw B which is keeping the rear cover C and guide R (2nd) assy 0. Remove the guide R (2nd) assy 0.

  • Page 128: Tqsb-2 Pcb

    Oki Data CONFIDENTIAL 3.3.2 TQSB-2 PCB (1) Remove the pulse motor (see 3.3.1). (2) Remove the connectors Q, R from the GRT PCB P. (3) Remove the screw S and remove the GRT PCB P. Note : Refer to Detall A in the previous page.

  • Page 129: Troubleshooting

    Oki Data CONFIDENTIAL TROUBLESHOOTING Precautions Prior to the Troubleshooting (1) Go through the basic checking items provided in the Printer Handbook. (2) Obtain detailed information concerning the problem from the user. (3) Go through checking in the conditions similar to that in which the problem occurred.

  • Page 130: Troubleshooting Method

    Oki Data CONFIDENTIAL Troubleshooting Method When a problem occurs, go through the troubleshooting according to the following procedure. Problem occurs Problem displayed by Troubleshooting Carry out detailed the LCD message according to the LCD troubleshooting Status Message List according to the (see 4.3.1)
  • Page 131 Oki Data CONFIDENTIAL • ( JAM error ) Paper Inlet Jam • Does paper jam at the inlet when the power is turned on? • YES Is the paper located above the sensor plate (inlet)? • YES Remove the paper.

  • Page 132: Connection Diagram

    Oki Data CONFIDENTIAL CONNECTION DIAGRAM Interconnection Diagram Stepping motor 2 M-T3 1 M-T4 "MOTOR" 4 M-T1 3 M-T2 GRT PCB "PU" To Printer PCB Layout GRT PCB MOTOR MOTOR CONTROLLER DRIVER SEN2 149 / 42641101TH Rev.1...

  • Page 133: Parts List

    Oki Data CONFIDENTIAL PARTS LIST Figure 6-1 High Capacity Second Paper Feeder 150 / 42641101TH Rev.1...
  • Page 134 Oki Data CONFIDENTIAL Table 6-1 High Capacity Paper Feeder Description OKI-J Part No. Q’ty Remark Hopping roller shaft assy 50409501 One-way clutch gear 51401101 Pulse motor 56512201 GRT PCB 42372702 Cassette assy (2nd tray) 50107304 DIN8P-DIN8P Connector Cord 42372601 151 /...
  • Page 135 Oki Data CONFIDENTIAL 2nd Tray ASSEMBLY SECTION1 CABINET & CASSETTE ASSEMBLY SECTION2 MECHANICAL ASSEMBLY SECTION1 CABINET & CASSETTE ASSEMBLY 152 / 42641101TH Rev.1...
  • Page 136 Oki Data CONFIDENTIAL SECTION1 CABINET & CASSETTE ASSEMBLY 153 / 42641101TH Rev.1...
  • Page 137 Oki Data CONFIDENTIAL SECTION2 MECHANICAL ASSEMBLY 154 / 42641101TH Rev.1...
  • Page 138 Oki Data CONFIDENTIAL Table 6-2 2nd Tray Parts List Description OKI Parts No. Q'ty/U 1000 Plate, upper 1PP4122-1401P001 Sheet guide assembly 3PA4122-1370G001 Front cover assembly 1PA4122-1369G001* Inner guide assembly 3PA4122-1371G001 Cassette assembly (2nd tray) 50107304 Separation frame assembly 53345801 Cover, rear...

  • Page 139: Appendix H Network Interface (Option)

    Oki Data CONFIDENTIAL APPENDIX H NETWORK INTERFACE (OPTION) Connector • 8-pin modular jack Cable • 10BASE/T Signal Contact No. Plug Jack Polarity Power feeder3 – Power feeder3 – – Send Receive Receive Send Receive Send – Send Receive – Power feeder2 Power feeder2 –...
  • Page 140 Oki Data CONFIDENTIAL List of protocols Protocol Print Configuration Etc. TCP/IP HTTP TCP, IP, ICMP, ARP Telnet SMTP/POP3 NetBEUI HTTP(Except IPP) SNMP DHCP/BOOTP RARP AutoIP UPnP NetBEUI SMB, CIFS WINS NetBIOS NetWare Q-Server over IPX SPX, IPX, SAP, RIP Q-Server over IP...
  • Page 141 Oki Data CONFIDENTIAL b) LPR The LPR is an application to process the print data. The LPR of this system supports multiple clients. Furthermore, it provides multiple connections for one client. Item Factory default Setup range Description Number of clients connected 1 to 8 clients...
  • Page 142 Oki Data CONFIDENTIAL d) Telnet Telnet is an application to reference and change the menu of the Network/Printer. The TELNET of this system supports simultaneous connection of multiple clients for the personal user. Furthermore, it provides multiple connections for one client. But it cannot provide two or more simultanepus connections for super users.
  • Page 143 Oki Data CONFIDENTIAL Netware a) Support OS Netware File Server 2.2C, 3.X,4.X,5 (Bindery Model/ NDS support) b) R-printer The R-printer is an application to process the print data. The R-printer of this system supports multiple print serves. Furthermore, it provides one connection for one printer server;...
  • Page 144 Oki Data CONFIDENTIAL c) Q-Server The Q-Server is an application to process the print data. The Q-Server of this system supports multiple file serves. Furthermore, it allows connection of multiple print servers for one file server. Shipment from factory Setup range...
  • Page 145 Work Group name Print Server Indicates the NetBIOS Work Group name. 11) OKI Original Port The OKI Original Port provides special processing which is beyond the scope of normal menu operation. Item Description Initial recognition Executes the processing of finding out the printer by the setup utility when the print- er is connected to the network.
  • Page 146 Number of connections Total number of connections Number of connections for simultaneous use of management APs (Telnet, SMP, Web, OKI Original Port) Number of connections for simultaneous use of printing APs 13) Setup Each setup item can be set by the menu and network management tool.
  • Page 149 Parts No. Name Remarks 51112301 Hopping Roller Shaft 53342401 Rubber-Hopping Roller 51607402 Bearing 51228901 One-way Clutch Gear 42174301 Roller-Regist 51607501 Bearing(Registration) 42174201 Roller-Pressure 41279501 Holder-Regist L 41279601 Holder-Regist R Gear-Pressure 41279401 Bearing-Pressure 41281201 Spring-Tension 41280401 Plate-Contact PA 41279301 Bearing-Regist L 41279701 Gear-Regist 42208501...
  • Page 150 Parts No. Name Remarks 42209101 Guide-Paper R(Adhesive) 42200501 Plate-Base Assy. Polyethylene Tape L=90mm 40828301 Guide-Paper H CS-RING(CS3-SUS) 42209401 Cassette guide L Assy. Beige 42209402 Cassette guide L Assy. Black 42209501 Cassette guide R Assy. Beige 42209502 Cassette guide R Assy. Black 51608801 Beam Plate...

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