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Oki MICROLINE 8810 Maintenance Manual
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Oki MICROLINE 8810 Maintenance Manual

Oki MICROLINE 8810 Maintenance Manual

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ML8810
Maintenance Manual
032707B
Oki Data CONFIDENTIAL

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Summary of Contents for Oki MICROLINE 8810

  • Page 1 ML8810 Maintenance Manual 032707B Oki Data CONFIDENTIAL...
  • Page 2 Oki Data CONFIDENTIAL Document Revision History Corrected items Person in Rev.No. Date charge Page Description of change 2006-05-24 ISSUE ODS Noguchi 2006-06-24 Component change and ODS Endo Error in writing revision 43404501TH Rev.2...
  • Page 3 Oki Data CONFIDENTIAL Preface This service manual provides on-site maintenance procedures for the MICROLINE 8810 for field service engineers. For handling and operation of the printer, see the operations manual. CAUTION: • No part of this manual may be reproduced in any form without prior permission.

  • Page 4: Table Of Contents

    Oki Data CONFIDENTIAL Contents 1. Configuration ........................7 Standard Components ........................7 Optional Components ........................7 2. Periodic Inspection ......................8 Inspection Areas ..........................8 3. Periodic Replacement Parts.................... 9 4. Cleaning ........................10 Cleaning of Sensors ........................12 5. Lubricating ........................13 6.
  • Page 5 Oki Data CONFIDENTIAL 7.2.28 Cover Open Assembly ......................48 7.2.29 CSF Circuit Board ....................... 49 7.2.30 Removing the Printer Unit ....................50 7.2.31 SQC Circuit Board ......................52 7.2.32 Rear PE-Sensor Assembly / Rear PE Sensor (Mechanical) ..........53 7.2.33 Head-Cable Assembly ......................54 7.2.34 Continuous-Form Sensor ....................
  • Page 6 Oki Data CONFIDENTIAL 10.2.9 Parallel-Interface Error .....................124 10.2.10USB Interface Error ......................125 10.2.11Automatic Paper-Thickness Adjustment Motion Error ............126 10.2.12Printing-Position Error ......................127 10.2.13Unrecoverable Errors .......................128 11. Periodically Replaced Parts ..................129 12. Operation ........................131 12.1 Outline ............................131 12.2 About the operation of a control board (See Figure 12-1) .............. 132 12.2.1 Explanation of the basic operation ..................

  • Page 7: Configuration

    Oki Data CONFIDENTIAL 1. Configuration 1.1 Standard Components This printer consists of the components specified below. (1) Upper-cover assembly (2) Printer unit (3) Power-supply unit Upper cover assembly (4) Control unit (5) Operating-panel assembly (6) Lower-base assembly Sheet stacker Operating panel assembly...

  • Page 8: Periodic Inspection

    Oki Data CONFIDENTIAL 2. Periodic Inspection Conducting the preventive maintenance described below in the specified cycle will help ensure the long and efficient operation of the printer and increase the MTBF (mean time between failure). CAUTION: Turn off the power switch and disconnect the power cord before conducting maintenance work.

  • Page 9: Periodic Replacement Parts

    Oki Data CONFIDENTIAL 3. Periodic Replacement Parts The parts below require replacement in the specified cycles. Table 3-1. Periodic Replacement Parts Description Parts No. Replacement cycle [The time (H) is the actual operating hours.] Ribbon cartridge 41708210 10 million ANK characters in Utility mode...

  • Page 10: Cleaning

    Oki Data CONFIDENTIAL 4. Cleaning CAUTION: • Turn off the power switch and disconnect the power cord before cleaning. • Be careful to prevent paper dust from entering the mechanisms of the printer. • After cleaning the lubrication areas, be sure to lubricate them.
  • Page 11 Oki Data CONFIDENTIAL Carriage shaft Front/rear feed rollers (8 locations) ViewB Rear PE sensor ViewA Sheet-guide upper-front-assembly sensor (3 locations) SQC circuit-board sensor (11 locations) View A: Bottom View of Printer SQC circuit board Rear PE sensor Sub shaft View B: Rear View of Printer 11 / 43404501TH Rev.1...

  • Page 12: Cleaning Of Sensors

    Oki Data CONFIDENTIAL 4.1 Cleaning of Sensors (1) Cleaning of Rear PE Sensor 1 Using a cotton swab, wipe the sensor on the platen side of the upper sheet guide. Clean the surface of the sensor guide. Upper sheet guide...

  • Page 13: Lubricating

    Oki Data CONFIDENTIAL 5. Lubricating Perform lubrication as specified below. (1) Cycle Lubricate every year or 600 hours of operation, whichever comes first (parts marked * only). Otherwise, this printer is maintenance-free and lubrication will not be necessary during operation. However, when you have conducted disassembly or reassembly, cleaned the lubrication areas, or replaced parts, perform lubrication.
  • Page 14 Oki Data CONFIDENTIAL (5) Lubrication Areas See the illustrations below. Slider felt (*) Adjust-cam surface PM B Sliding area between carriage shaft and collar GEP B (Right/left) GEP B (Right/left) Gear tooth flank GEP B Bearing sliding surface PM B...
  • Page 15 Oki Data CONFIDENTIAL Adjust-cam surface GEP B Sliding area between carriage shaft and collar GEP B Bearing sliding surface PM B Spring hook GEP B Sliding area between platen Bearing sliding surface and platen collar Bearing sliding surface PM B...
  • Page 16 Oki Data CONFIDENTIAL Sliding area between arm mode and rack Sliding area between stud and rack GEP B GEP B Rack tooth flank Sliding area between side frame and rack GEP B GEP B Mode Rack R Sliding area between arm mode and rack...
  • Page 17 Oki Data CONFIDENTIAL Sliding surface with mode arm GEP B Drive-shaft sliding surface for rotation PM C Drive-shaft sliding surface for rotation PM C Sliding surface with mode arm GEP B Sheet-Guide Upper F/R Assembly Bearing portion of gear GEP C (4 locations)

  • Page 18: Maintenance Tools

    Oki Data CONFIDENTIAL 6. Maintenance Tools Table 6-1 shows the tools required for on-site maintenance services, such as replacement of printed circuit boards and other parts. Table 6-1. Maintenance Tools Maintenance tools Quantity Parts for which the tools are used Remarks No.1-100 Phillips screwdriver...

  • Page 19: Replacing Parts

    Oki Data CONFIDENTIAL 7. Replacing Parts 7.1 Precautions in Parts Replacement (1) Turn off the power switch, disconnect the AC plug from the AC outlet, and disconnect the AC cord and the interface cable from the printer before starting disassembly.

  • Page 20: Removing And Installing Parts

    Oki Data CONFIDENTIAL 7.2 Removing and Installing Parts 7.2.1 Upper-Cover Assembly (1) Remove the stacker 1 and the stacker support 2. (2) Disconnect the AC cord from the printer. Remove the earth screw, if any. CAUTION: If the AC cord is connected to the printer, the upper-cover assembly cannot be removed or installed.

  • Page 21: Raising And Lowering The Printer Unit

    Oki Data CONFIDENTIAL 7.2.2 Raising and Lowering the Printer Unit (1) Remove the upper-cover assembly (see section 7.2.1). (2) Open the operating panel 1 and remove the four screws 2. (3) Hold the pull and raise the printer unit 3, pivoting it on its back.
  • Page 22 Oki Data CONFIDENTIAL Pull Gasket Set the stand shaft securely. Groove Stand shaft 22 / 43404501TH Rev.2...

  • Page 23: Control Unit (M2D Printed Circuit Board)

    Oki Data CONFIDENTIAL 7.2.3 Control Unit (M2D Printed Circuit Board) (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect all connection cords connected to the control unit 1. (4) Remove the five screws 2 and the control unit 1.

  • Page 24: Power-Supply Unit

    Oki Data CONFIDENTIAL 7.2.4 Power-Supply Unit (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect all connectors connected to the power-supply unit 1. (4) Remove the five screws 2. (5) When removing the power-supply unit, disconnect the connectors, pull out the power switch upward from the lower cover 3, and disconnect the cords from the cord route of the lower cover 3.

  • Page 25: Ag Sensor Circuit Board

    Oki Data CONFIDENTIAL 7.2.5 AG Sensor Circuit board (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the screw 2 and the AG-sensor circuit-board assembly 3. Disconnect the connector 1 from the AG-sensor circuit board. (3) Perform installation in the reverse order of removal.

  • Page 26: Ag Motor Assembly

    Oki Data CONFIDENTIAL 7.2.6 AG Motor Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the cable guide 1. (4) Disconnect the connector 3 of the AG motor assembly 2 from the CN16 on the control unit 4.

  • Page 27: Lf Motor Assembly

    Oki Data CONFIDENTIAL 7.2.7 LF Motor Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the cable guide 1 and the three screws 2. Remove the sub frame 3 and the bushes 4.

  • Page 28: Space Motor

    Oki Data CONFIDENTIAL 7.2.8 Space Motor (1) Remove the upper-cover assembly (see section 7.2.1). (2) Loosen the mounting screw 2 of the idle-pulley bracket 1, slide the screw in the direction indicated by the arrow, and tighten it. (3) Raise the printer unit (see section 7.2.2).

  • Page 29: Operating-Panel Circuit Board

    Oki Data CONFIDENTIAL 7.2.9 Operating-Panel Circuit Board (1) Remove the upper-cover assembly (see section 7.2.1). (2) Disconnect all connection cords connected to the operating-panel circuit board 1. (3) Release the operating-panel assembly 2 from the catch. (4) Remove the screw 3 and the claws 4 (in 4 locations). Remove the operating-panel circuit board 1 from the operating-panel assembly 2.

  • Page 30: Starting Up In Gap Fully Open Mode

    Oki Data CONFIDENTIAL 7.2.10 Starting Up in Gap Fully Open Mode (Replacement of the head/ribbon guide/ribbon protector) (1) While holding down switches 1, 5, and 6 on the operating panel, turn on the power switch to start up in maintenance mode.

  • Page 31: Ribbon Guide & Head Fan Assembly

    Oki Data CONFIDENTIAL 7.2.11 Ribbon Guide & Head Fan Assembly CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. (1) Start up in gap fully open mode (see section 7.2.10).

  • Page 32: Print Head

    Oki Data CONFIDENTIAL 7.2.12 Print Head CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. Be sure to turn off the power switch prior to disassembly. (1) Start up in gap fully open mode (see section 7.2.10).

  • Page 33: Ribbon Protector

    Oki Data CONFIDENTIAL 7.2.13 Ribbon Protector CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. (1) Remove the print head (see section 7.2.12). (2) Remove the two screws 1 and the two paper-width-sensor assemblies 2.

  • Page 34: Ribbon Feed Assembly

    Oki Data CONFIDENTIAL 7.2.14 Ribbon Feed Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the screws 1 and 2 and the ribbon feed assembly 3. (3) Perform installation in the reverse order of removal. 34 / 43404501TH Rev.2...

  • Page 35: Ribbon Feed Motor

    Oki Data CONFIDENTIAL 7.2.15 Ribbon Feed Motor (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the purse lock 1. (4) Disconnect the connector 3 from the CN19 on the control unit 2.

  • Page 36: Space Belt

    Oki Data CONFIDENTIAL 7.2.16 Space Belt (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the space motor (see section 7.2.7). (3) Remove the print head (see section 7.2.10). (4) Remove the two screws 1 and the carriage circuit board 2.

  • Page 37: Cut-Sheet/Continuous-Form Sensor Circuit Board (Rts Printed Circuit Board)

    Oki Data CONFIDENTIAL 7.2.17 Cut-Sheet/Continuous-Form Sensor Circuit Board (RTS Printed Circuit Board) (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the cable guide 1, the three screws 2, the sub frame 3, and then the bushes 4.

  • Page 38: Platen

    Oki Data CONFIDENTIAL 7.2.18 Platen (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the three screws 1, the sub frame 2, and then the bushes 3. Be careful not to lose the coil spring 4.

  • Page 39: Cut-Sheet/Continuous-Form Selector Motor

    Oki Data CONFIDENTIAL 7.2.19 Cut-Sheet/Continuous-Form Selector Motor (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect the connector 2 from the CN17 on the control unit 1. (4) Remove the two screws 3 and the cut-sheet-continuous-form selector motor 4.

  • Page 40: Ei Sensor Assembly

    Oki Data CONFIDENTIAL 7.2.20 EI Sensor Assembly CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools (1) Remove the head fan assembly, the ribbon guide, and then the print head (see section 7.2.12).

  • Page 41: Paper-Width-Sensor Assembly

    Oki Data CONFIDENTIAL 7.2.21 Paper-Width-Sensor Assembly CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools (1) Remove the head fan assembly, the ribbon guide, and then the print head (see section 7.2.12).

  • Page 42: Lcd Bracket Assembly

    Oki Data CONFIDENTIAL 7.2.22 LCD Bracket Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Disconnect the connector 2 from the CN2 on the operating-panel circuit board 1. (3) Tilt the LCD bracket assembly 3 forward and downward. Remove the two screws 4 and the LCD bracket assembly 3.

  • Page 43: Sheet-Guide Upper Front Assembly

    Oki Data CONFIDENTIAL 7.2.23 Sheet-Guide Upper Front Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the LCD bracket assembly (see section 7.2.22). (3) Raise the printer unit (see section 7.2.2). (4) Remove the cable guide 1, and disconnect the connector from the SQC circuit board 2.

  • Page 44: Mini Pitch Belt (Lf)

    Oki Data CONFIDENTIAL 7.2.24 Mini Pitch Belt (LF) (1) Remove the upper-cover assembly (see section 7.2.1.) (2) Remove the sheet guide upper front assembly (see section 7.2.23). (3) Remove the cable guide 1, the three screws 2, the sub frame 3, the bushes 4, and then the flange 5.

  • Page 45: Sc Motor Assembly

    Oki Data CONFIDENTIAL 7.2.25 SC Motor Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the sheet-guide upper front assembly (see section 7.2.23). (3) Remove the mini pitch belt LF (see section 7.2.24). (4) Disconnect the connector 1 from the SQC circuit board 2.

  • Page 46: Carriage Circuit Board (Kya Printed Circuit Board)

    Oki Data CONFIDENTIAL 7.2.26 Carriage Circuit Board (KYA Printed Circuit Board) CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. (1) Remove the print head (see section 7.2.12). (2) Remove the two screws 1 and the carriage circuit board 2.

  • Page 47: Connector

    Oki Data CONFIDENTIAL 7.2.27 Connector CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. (1) Remove the print head (see section 7.2.12). (2) Remove the carriage circuit board (see section 7.2.26).

  • Page 48: Cover Open Assembly

    Oki Data CONFIDENTIAL 7.2.28 Cover Open Assembly (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect the connector 2 from the CN3 on the operating-panel circuit board 1. (4) Disconnect connectors 4 from the CN100 on the control circuit board 3.

  • Page 49: Csf Circuit Board

    Oki Data CONFIDENTIAL 7.2.29 CSF Circuit Board (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect the flat cable connected to the CSF circuit board 1. (4) Remove the four screws 2.

  • Page 50: Removing The Printer Unit

    Oki Data CONFIDENTIAL 7.2.30 Removing the Printer Unit (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the two screws 2 fastening the front of the printer unit 1. (3) Remove the two screws 3 fastening the rear of the printer unit 1.
  • Page 51 Oki Data CONFIDENTIAL 51 / 43404501TH Rev.2...

  • Page 52: Sqc Circuit Board

    Oki Data CONFIDENTIAL 7.2.31 SQC Circuit Board (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the printer unit (see section 7.2.30). (3) Place the printer unit 1 upright. (4) Remove the four screws 2 and the film guard (sc) 3.

  • Page 53: Rear Pe-Sensor Assembly / Rear Pe Sensor (Mechanical)

    Oki Data CONFIDENTIAL 7.2.32 Rear PE-Sensor Assembly / Rear PE Sensor (Mechanical) (1) Remove the upper-cover assembly (see section 7.2.1). (2) Remove the printer unit (see section 7.2.21). (3) Place the printer unit 1 in the upright position. (4) Disconnect connectors 3 and 4 from the CN5 and the CN20 on the control unit 2.

  • Page 54: Head-Cable Assembly

    Oki Data CONFIDENTIAL 7.2.33 Head-Cable Assembly (1) Remove the upper-cover assembly (see section 7.2.1). CAUTION: The print head will be hot immediately after printing. To prevent burns, do not touch it until it cools. (2) Remove the print head (see section 7.2.12).

  • Page 55: Continuous-Form Sensor

    Oki Data CONFIDENTIAL 7.2.34 Continuous-Form Sensor (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Disconnect the connector 2 from the continuous-form sensor 1. (4) Press the lock of the continuous-form sensor 1 inward from the rear of the frame 3 to remove the continuous-form sensor 1.

  • Page 56: Slip-Roller Sensor

    Oki Data CONFIDENTIAL 7.2.35 Slip-Roller Sensor (1) Remove the upper-cover assembly (see section 7.2.1). (2) Raise the printer unit (see section 7.2.2). (3) Remove the screw 1 and the position-sensor bracket 2. (4) Disconnect the connector 4 from the slip-roller sensor 3.

  • Page 57: Slider

    Oki Data CONFIDENTIAL 7.2.36 Slider (1) Remove the upper cover (see section 7.2.1). (2) Remove the screw 2 from the carriage frame 1, and then remove the holder slider 3. Be careful not to lose the coil spring 4 in the holder slider 3, as it may come off easily.

  • Page 58: Adjusting

    Oki Data CONFIDENTIAL 8. Adjusting • Leave the printer unit fastened to the lower cover when making adjustments. • To minimize deviation in adjustment, place the printer on a rigid assembly bench (flatness of 1 mm or less) and keep it level while conducting your work.

  • Page 59: Adjusting The Line-Feed Belt

    Oki Data CONFIDENTIAL 8.1 Adjusting the Line-Feed Belt Tools • 500-gr pressure bar gauge • No. 2-200 Phillips screwdriver • Vernier calipers Adjustment Procedure (1) Turn off the power switch, and disconnect the AC plug from the AC outlet. (2) Remove the upper-cover assembly (see section 7.2.1).

  • Page 60: Checking The Gap Between The Platen And Core Block

    Oki Data CONFIDENTIAL 8.2 Checking the Gap between the Platen and Core Block Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 6, press the switch 1. The gap between the print head and the platen is set to range 1, and you can check the gap between the platen and the core block for automatic paper-thickness adjustment.

  • Page 61: Correcting The Automatic Paper-Thickness Adjustment Distance

    Oki Data CONFIDENTIAL 8.3 Correcting the Automatic Paper-Thickness Adjustment Distance Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 6, press the switch 5. The automatic paper-thickness adjustment distance is automatically corrected.
  • Page 62 Oki Data CONFIDENTIAL (9) When the operations have been completed, the printer prints [AV. = “correction value”] and automatically calculates the average of the 15 measurements. The calculation result is registered as the reference value for automatic paper-thickness adjustment. It is desirable that the value of [AV. = “ “] be within the range of 009 to 032.

  • Page 63: Correcting The Tof Position During Auto Loading

    Oki Data CONFIDENTIAL 8.4 Correcting the TOF Position during Auto Loading The TOF (top of form) position of a continuous form or cut sheet during auto loading is corrected using the switches on the operating panel in accordance with the procedure specified below.
  • Page 64 Oki Data CONFIDENTIAL (4) Press the switch 3 while offline, and install paper by auto loading. Continue to hold down the switch 3 after the auto loading has been completed. While holding down the switch 3, use switches 2 and 5 to correct the TOF position.

  • Page 65: Adjusting The Paper Cut Position

    Oki Data CONFIDENTIAL 8.5 Adjusting the Paper Cut Position By operating the switches on the operating panel in accordance with the procedure specified below, the paper cut position is adjusted so as to match separate continuous forms at their perforation.
  • Page 66 Oki Data CONFIDENTIAL When the leading edge of the paper is aligned with the paper cut position, release the switch. The paper position at the time the switch is released is registered as the new paper cut position. CAUTION: • The adjustment range is from +200/144 to –40/144 inches.

  • Page 67: Correcting The Horizontal Printing Position

    Oki Data CONFIDENTIAL 8.6 Correcting the Horizontal Printing Position When the settings in the adjustment-mode menu (section 9.2.2).are changed by the procedure specified below, horizontal offsets between lines in bidirectional printing are corrected. The correction value is separately adjustable for each print mode: low speed, normal speed, high speed 1, and high speed 2.

  • Page 68: Correcting The Cut-Sheet Line-Feed Pitch

    Oki Data CONFIDENTIAL 8.7 Correcting the Cut-Sheet Line-Feed Pitch When the setting in the adjustment-mode menu (section 9.2.2).is changed in accordance with the following procedure, the cut-sheet line-feed pitches for manual feed and CSF are corrected. Cases in which correction is required •...

  • Page 69: Adjusting Sensors

    Oki Data CONFIDENTIAL 8.8 Adjusting Sensors 8.8.1 Checking the Slice Level of Sensors Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 3, press the switch 5. The detection level of each sensor is automatically adjusted to determine whether the level is normal.

  • Page 70: Sensor Check

    Oki Data CONFIDENTIAL 8.8.2 Sensor Check Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 3, press the switch 1. The printer checks to determine whether each sensor is operating properly.

  • Page 71: Correcting The Paper-Width Sensor

    Oki Data CONFIDENTIAL 8.8.3 Correcting the Paper-Width Sensor Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 1, press the switch 4. The horizontal positions of the right- and left-hand paper-width sensors are automatically adjusted.

  • Page 72: Correcting The Front Pe Sensor

    Oki Data CONFIDENTIAL 8.8.4 Correcting the Front PE Sensor Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 1, press the switch 6. The vertical positions of the seven front PE sensors are automatically adjusted.

  • Page 73: Manual Setting Of The Sensor Slice Level

    Oki Data CONFIDENTIAL 8.8.5 Manual Setting of the Sensor Slice Level Turn on the power while holding down switches 1, 5, and 6 to start up in maintenance mode. While holding down the switch 3, press the switch 2. The slice level of each sensor is viewed on the LCD and set manually (seven levels [1 to 7] are available).
  • Page 74 Oki Data CONFIDENTIAL <Setting Item> Item Function Preset Table Sensor 1 to 7 Sets the slice level of table sensors 1 to 7 Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 Level 7 ↑ Front PE Sensor 1 to 7 Sets the slice level of front TOF/PE sensors 1 to 7 ↑...

  • Page 75: Maintenance Test

    Oki Data CONFIDENTIAL 9. Maintenance Test 9.1 Selecting Test Mode 9.1.1 Local Mode Start Switch The switches on the operating panel have the functions as shown in Table 9-1 for various tests for maintenance. When the power is turned on while a switch marked with is held down, the printer enters the mode shown in Table 9-1.
  • Page 76 Oki Data CONFIDENTIAL Table 9-1. Local test (2/3) Switch Test Item Paper mode Remarks 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 6 6 6 6 6...

  • Page 77: Menu

    Oki Data CONFIDENTIAL 9.2 Menu This printer has the internal memory necessary to store the control-mode data. When returned to the default settings by power-on operation or reset-signal input, the printer refers to the memory and automatically sets up the modes. If commands have been input from the host computer, the printer operates according to these commands.

  • Page 78: Function Setting Menu

    Oki Data CONFIDENTIAL 9.2.1 Function Setting Menu With a printer placed in the DESELECT state after it is turned on, pressing 4 switch while holding 6 down provides a function setting menu, on the printer. The function setting menu consists of the following 12 modes, and the mode 1) is established directly after the function setting menu is provided.
  • Page 79 Oki Data CONFIDENTIAL (1) Printer Control Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Emulation Mode Selects IBM PPR mode, EPSON FX mode IBM PPR or ML mode. EPSON FX (2) Font Underlined values are defaults. Item (LCD Display)
  • Page 80 Oki Data CONFIDENTIAL (3) Symbol Sets Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Character Set Selects an ANK character code table. Set I Set II Standard, Line Graphics, Block Graphics (ML Mode only) Language Set Selects a foreign character set.
  • Page 81 Oki Data CONFIDENTIAL (4) Set Up Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Multi Pass Selects a printing direction for a print line Bi-Directional containing double-height print data. Uni-Directional Graphics Selects a printing direction for a print line Bi-Directional containing image data.
  • Page 82 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) SI PITCH (10) Sets handling of the SI command received 15 CPI in 10CPI mode (this item is displayed only 17.1 CPI during IBM emulation). SI PITCH (12)
  • Page 83 Oki Data CONFIDENTIAL 5) Manual Feed Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Line Spacing Selects line spacing. 6LPI 8LPI Auto Eject Pos. Selects the position to be detected for the 3.18mm (1/8”) (Note 2) ejection of cut-sheet paper.
  • Page 84 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Gap Control Selects a paper weight measurement Auto method and gap range in manual cut-sheet Manual Gap 1 feed modes. Manual Gap 2 Manual Gap 3...
  • Page 85 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Align1 Pos.Adj. Adjusts within a range of 0 to 45.4 mm a left margin when a Auto Align function is used (in 1/90 inch increments). 5.1mm...
  • Page 86 Oki Data CONFIDENTIAL (6) CSF front Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Line Spacing Selects line spacing. 6LPI 8LPI Auto Eject Pos. Selects the position to be detected for the 3.18mm (1/8”) (Note 2) ejection of cut-sheet paper.
  • Page 87 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Gap Pos Selects the position at which auto-gap 50.8mm (2”) (Note 2) operation of auto feed mode for cut sheets 101.6mm (4”) is performed. Each setting for the position shows the distance between the first dot position of, and the auto gap sensor for, paper.
  • Page 88 Oki Data CONFIDENTIAL (7) CSF Rear Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Line Spacing Selects line spacing. 6LPI 8LPI Auto Eject Pos. Selects the position to be detected for the 3.18mm (1/8”) (Note 2) ejection of cut-sheet paper.
  • Page 89 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Gap Pos Selects the position at which auto-gap 50.8mm (2”) (Note 2) operation is performed in the auto feed 101.6mm (4”) mode for cut sheets. Each setting for the position shows the distance between the first dot position of, and the auto gap sensor for, paper.
  • Page 90 Oki Data CONFIDENTIAL (8) Front Feed Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Line Spacing Selects line spacing. 6LPI 8LPI Form Tear-off Selects moving to the position for perforation tear-off of a continuous-form front tractor 500mS mode.
  • Page 91 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Gap Control Selects a paper weight measurement Auto method and gap range of a continuous-form Manual Gap 1 front tractor mode. Manual Gap 2 Manual Gap 3...
  • Page 92 Oki Data CONFIDENTIAL (9) Rear Feed Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Line Spacing Selects line spacing. 6LPI 8LPI Form Tear-off Selects moving to the position for perforation tear-off of a continuous-form front tractor 500mS mode.
  • Page 93 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) Gap Control Selects a paper weight measurement Auto method and gap range of a continuous-form Manual Gap 1 rear tractor mode. Manual Gap 2 Manual Gap 3...
  • Page 94 Oki Data CONFIDENTIAL (10) Parallel I/F Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) I-Prime Selects whether to enable I-PRIME. Invalid Buffer Print Buffer Clear Cont. I-Prime Selects a control method for continuous I- Valid PRIME signals.
  • Page 95 Oki Data CONFIDENTIAL (12) Adjustment Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) TOF Adj.(Cut) Sets a correction value for a basic top-of- (Note 1) form position for manual cut-sheet feeding (or any of numbers of up to ±40)
  • Page 96 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) 1stDotAdjCut Selects a correction value for the frist- Left 10 character print start position of manual cut- Left9 sheet feeding when an auto alignment Left8 function is disabled <in 1/180 inch (0.14 Left7 mm) increments>.
  • Page 97 Oki Data CONFIDENTIAL Underlined values are defaults. Item (LCD Display) Function Settings (LCD Display) LF Revise(Cut) Corrects the line feed amount after feeding TLFP = 0 (Note 3) in the manual feed mode for cut sheets. (or any of numbers of up to ±10)

  • Page 98: Functions Of Switches

    Oki Data CONFIDENTIAL 9.2.1.1 Functions of Switches During menu setting, the switches on the operating panel have the functions specified below. Switch Function • Pressing switch 2 while holding down the switch 6 moves forward by one mode, or returns to the first mode if pressed in the last mode.
  • Page 99 Oki Data CONFIDENTIAL Every time the switch 2 is pressed, the setting items are scrolled forward. (Example) Press the switch 2. M o d e Press the switch 2. Press the switch 2 repeatedly until the desired item appears. If you press the switch 5 instead of the switch 2, the setting items are scrolled backward.

  • Page 100: Adjustment Mode Menu Items

    Oki Data CONFIDENTIAL 9.2.2 Adjustment mode menu items Adjustment items and values of the adjustment mode menu are listed in the table below. At the time of entering the adjustment mode menu, the following message is displayed on the LCD.

  • Page 101: Operating Procedure

    Oki Data CONFIDENTIAL 9.2.2.1 Operating Procedure After the adjustment-mode menu has been opened (if paper is not installed, install paper and press the switch 3 to load it), the printer prints out the horizontal printing-position correction items (Nos. 6 to 9), displays the last item (No.

  • Page 102: Procedures For Repairing

    Oki Data CONFIDENTIAL 10. Procedures for Repairing (1) Before Conducting Repair When you have received a request for repair from a customer, first check whether the problem can be solved through troubleshooting using the operations manual. If possible, ask the customer in what situation the problem occurred and make a note of it.

  • Page 103: Problem Analysis Procedure

    Oki Data CONFIDENTIAL Layout of switches and lamps 10.1 Problem Analysis Procedure Start ↓ Turn off the power switch. Disconnect the interface cable. Remove the paper. ↓ Move the carriage to the right and left by hand. ↓ Does the carriage move smoothly?
  • Page 104 Oki Data CONFIDENTIAL Continued from the previous page ↓ Does the printer perform line-feed motion? N: Check for an operating-panel error as specified in section 10.2.4, or for a paper-feed error as specified in section 10.2.5. Y: Press the switch 2.

  • Page 105: Repair Procedure

    Oki Data CONFIDENTIAL 10.2 Repair Procedure The table below shows typical problems. If your problem is not in the table, check for similar problems. Layout of switches and lamps Table 10-1 Item D-etails of problem Section No. Remarks 10.2.1 Power-supply error •...

  • Page 106: Power-Supply Error

    Oki Data CONFIDENTIAL 10.2.1 Power-Supply Error • The power switch is turned on but nothing happens. (no lamps light up) Does the AC cord conduct electricity properly? N: Replace the AC cord. Y: Is the AC fuse in the power supply blown? Y: Replace the power-supply assembly (do not replace the fuse).

  • Page 107: Reset-Circuit Error

    Oki Data CONFIDENTIAL 10.2.2 Reset-Circuit Error • The power switch is turned on but nothing happens. (there is no change in the lamp on/off state at power-on) Does pin 58 (RST input signal) of the IC9 (MSM67X640GS-BK) become high level within the specified length of time after the power is turned on? N: Replace the MIB printed circuit board.

  • Page 108: Alarm Display

    Oki Data CONFIDENTIAL 10.2.3 Alarm Display If an error occurs, this printer displays the content of the error using the lamps on the operating panel and the LCD. Lamps B and F blink to display the status. Layout of switches and lamps...

  • Page 109: Operating-Panel Error

    Oki Data CONFIDENTIAL 10.2.4 Operating-panel error • One or more lamps do not light up (the carriage moves). Do all of the lamps remain off? Y: Are the voltages between pins 6/8 and pins 4/5/7 of connector CN1 of the OPN printed circuit board within the range of 4.75 to 5.25 V?

  • Page 110: Paper-Feed Error

    Oki Data CONFIDENTIAL 10.2.5 Paper-feed error • Paper end is detected even if there is paper installed (the lamp B lights up). 1 Continuous forms are used (front tractor). Is [FRONT] selected on the LCD? N: Go offline and press the switch 4 to choose [FRONT].
  • Page 111 Oki Data CONFIDENTIAL 2 Continuous forms are used (rear tractor: optional). Is [REAR] selected on the LCD? N: Go offline and press the switch 4 to choose [REAR]. Y: Are cut sheets also installed? Y: Remove the cut sheets. N: Is the rear PE sensor dusty or stained? Y: Clean it and go to N.
  • Page 112 Oki Data CONFIDENTIAL 3 Cut sheets are used (rear CSF: optional). Is [CSF Rear] selected on the LCD? N: Go offline and press the switch 4 to choose [CSF Rear]. Y: Is the rear PE sensor dusty or stained? Y: Clean it and go to N.
  • Page 113 Oki Data CONFIDENTIAL 4 Cut sheets are used (manual feed). Is [MANUAL] selected on the LCD? N: Go offline and press the switch 4 to choose [MANUAL]. Y: Is the SQC circuit-board sensor or the sheet-guide upper-front-assembly sensor dusty or stained? Y: Clean them and go to N.
  • Page 114 Oki Data CONFIDENTIAL • Paper end is not detected even if there is no paper installed (the lamp B does not light up). 1 Continuous forms are used (front tractor). Is [FRONT] selected on the LCD? N: Go offline and press the switch 4 to choose [FRONT].
  • Page 115 Oki Data CONFIDENTIAL 2 Continuous forms are used (rear tractor: optional). Is [REAR] selected on the LCD? N: Go offline and press the switch 4 to choose [REAR]. Y: Is the rear PE sensor dusty or stained? Y: Clean it and go to N.
  • Page 116 Oki Data CONFIDENTIAL 3 Cut sheets are used (rear CSF: optional). Is [CSF Rear] selected on the LCD? N: Go offline and press the switch 4 to choose [CSF Rear]. Y: Is the rear PE sensor dusty or stained? Y: Clean it and go to N.
  • Page 117 Oki Data CONFIDENTIAL 4 Cut sheets are used (manual feed). Is [MANUAL] selected on the LCD? N: Go offline and press the switch 4 to choose [MANUAL]. Y: Edit the menu settings and print them out. Is the printer set to output a paper-end signal if paper end is detected in cut-sheet manual mode (set to [Offline])? N: Select [Offline], and check whether the printer has recovered from the error.
  • Page 118 Oki Data CONFIDENTIAL • Paper is not fed at all or the line-feed pitch is abnormal. • The LF motor makes an inappropriate noise. Turn off the power switch. Does the platen knob rotate smoothly? N: Remove the mini pitch belt from the LF motor gear. Rotate the LF motor by hand, or turn on the power to perform LF/FF motions.
  • Page 119 Oki Data CONFIDENTIAL • Paper jams occur frequently. • Paper is torn. • Skew occurs. Is the paper path clogged with paper dust? Y: Remove the paper dust. N: Are the paper’s sprocket holes aligned with the pins of the pin tractor? N: Adjust the sheet-feeder assembly so that the pins of the pin tractor are positioned in the center of each sprocket hole.

  • Page 120: Carriage Motion Error

    Oki Data CONFIDENTIAL 10.2.6 Carriage Motion Error • The character pitch is abnormal, characters overlap, or the printing position offsets horizontally. • ERROR 101 (homing error) occurs. • ERROR 102 (spacing error) occurs. Turn off the power switch, remove the ribbon cartridge, and rotate the ribbon feed knob by hand.
  • Page 121 Oki Data CONFIDENTIAL Continued from the previous page N: Is the auto-gap mode selected? Y: Correct the automatic paper-thickness adjustment distance (see section 8.3). N: If the printer is in auto-gap mode, does the setting of [GAP X] (X=1 to 8, A to E) displayed on the screen during printing match the paper thickness? N: Edit the manual gap setting to match the paper thickness.

  • Page 122: Ink-Ribbon Feed Error

    Oki Data CONFIDENTIAL 10.2.7 Ink-Ribbon Feed Error • The ink ribbon is not fed properly or is not fed at all. • Ink-ribbon jams occur. • The print is too light or smeared, or the print density is uneven. Is the problem solved if the ribbon cartridge is replaced? Y: Replace the ribbon cartridge.

  • Page 123: Print-Head Motion Error

    Oki Data CONFIDENTIAL 10.2.8 Print-Head Motion Error • Dots are missing or excess dots are printed. • Dots are offset. • The printer does not print at all (the carriage moves). Is auto-gap mode selected? Y: Correct the automatic paper-thickness adjustment distance (see section 8.3).

  • Page 124: Parallel-Interface Error

    Oki Data CONFIDENTIAL 10.2.9 Parallel-Interface Error • The lamp D is on but the printer does not print at all (no reaction). • The lamp D goes out and the printer does not print. • The printer misprints or prints meaningless characters.

  • Page 125: 10Usb Interface Error

    Oki Data CONFIDENTIAL 10.2.10 USB Interface Error • The lamp D is on but the printer does not print at all (no reaction). • The lamp D goes out and the printer does not print. • The printer misprints or prints meaningless characters.

  • Page 126: 11Automatic Paper-Thickness Adjustment Motion Error

    Oki Data CONFIDENTIAL 10.2.11 Automatic Paper-Thickness Adjustment Motion Error • ERROR 0103 (auto gap error) occurs. Is the auto-gap motor running? N: Measure the resistance between the terminals of the auto-gap motor assembly in the locations specified below, and check for broken wires, short circuiting with another cord, or other fault.

  • Page 127: 12Printing-Position Error

    Oki Data CONFIDENTIAL 10.2.12 Printing-Position Error • The printing start position is offset. The printer prints past the paper edge. Is the paper-width sensor dusty or stained? Y: Clean it and go to N. N: In offline mode, press the switch 4 to choose [MANUAL]. Conduct the sensor check in maintenance mode.

  • Page 128: 13Unrecoverable Errors

    Oki Data CONFIDENTIAL 10.2.13 Unrecoverable Errors 1 ERROR 0107 (fan error) occurs. Is the connection cord connected properly to the CN14 on the MIB PCB and the CN2 on the KYA PCB? N: Connect them properly. Y: Does the connection cord conduct electricity? N: Replace the connection cord.

  • Page 129: Periodically Replaced Parts

    Oki Data CONFIDENTIAL 11. Periodically Replaced Parts The table below shows the maintenance parts for the mechanical and control units that are required when 100 units of this printer are used under the working conditions specified below for a year.
  • Page 130 Oki Data CONFIDENTIAL Table 11-1 (2/2) Maintenance Parts List Quantity used Requirement Quantity as Description Diagram No. Remarks for a printer level maintenance parts Timing-belt rear tractor 41568601 Motor mode 43375401 LCD assembly 43513801 Slider 41633501 AG-sensor PCB assembly 41542302...

  • Page 131: Operation

    Oki Data CONFIDENTIAL 12. Operation 12.1 Outline This printer consists of the print mechanical unit and the print control unit. The mechanical unit consists of the print head, the space system, the line-feed system, the ribbon-feed system, the auto-gap system, and the skew correction system. These components perform the actions specified below.

  • Page 132: About The Operation Of A Control Board (See Figure 12-1)

    Oki Data CONFIDENTIAL 12.2 About the operation of a control board (See Figure 12-1) A control board is equipped with two CPUs, and the main CPU (M-CPU) controls the entire operation of the device, and the slave CPU (S_CPU) controls only the printing operation.
  • Page 133 Oki Data CONFIDENTIAL 133 / 43404501TH Rev.2...

  • Page 134: Actions Of The Mechanical Unit

    Oki Data CONFIDENTIAL 12.3 Actions of the Mechanical Unit 12.3.1 Mechanism and Actions of the Print Head (See Figures 12-2 & 12-3.) The print head is a spring-charged head using a permanent magnet. The head is mounted on the carriage, which travels parallel to the platen.
  • Page 135 Oki Data CONFIDENTIAL (1) Actions of the Print Head (See Figure 12-3.) The armature spring is loosened by the permanent magnet, and the armature is adhered to the core. The print wire attached to the armature is in the reset state. When a print command is sent from the print control unit, the magnet coil is excited and generates a magnetic field opposite that of the permanent magnet.

  • Page 136: Space Mechanism And Its Actions

    Oki Data CONFIDENTIAL 12.3.2 Space Mechanism and its Actions Spacing is performed by driving the carriage on the main and sub shafts mounted in parallel to the platen by the DC servo motor. (1) Spacing (See Figure 12-4.) The carriage carrying the print head is moved in parallel to the platen by the main shaft and the sub shaft.

  • Page 137: Ribbon-Feed Mechanism And Its Actions (See Figure 12-5.)

    Oki Data CONFIDENTIAL 12.3.3 Ribbon-Feed Mechanism and Its Actions (See Figure 12-5.) The ribbon-feed mechanism feeds the ink ribbon, and drives using the stepping motor. (1) Ribbon Cartridge A one-way-feed endless ribbon is used. The mechanism is designed to ensure consistently clear printing.

  • Page 138: Head Gap Adjustment Mechanism

    Oki Data CONFIDENTIAL 12.3.4 Head Gap Adjustment Mechanism There are two head gap adjustment mechanisms: the manual gap adjustment mechanism and the auto gap adjustment mechanism. The manual gap adjustment mechanism adjusts the gap between the print head and the platen according to the paper thickness through operation of a switch on the operating panel or a menu setting.
  • Page 139 Oki Data CONFIDENTIAL (3) Auto Gap Adjustment Mechanism The auto gap adjustment mechanism adjusts the gap between the platen and the print head automatically according to the paper thickness. When [Auto] is selected, the mechanism moves the print head up and down, and drives using a stepping motor.
  • Page 140 Oki Data CONFIDENTIAL Spring Main shaft Idle gear Stepping motor (auto-gap motor) Adjust cam Idle gear Spring Platen Print head Ribbon protector Idle gear Carriage frame Platen Slit disk Ribbon protector Figure 12-7. Auto Gap Adjustment Mechanism 140 / 43404501TH Rev.2...

  • Page 141: Paper Feeding (See Figures 12-8, 12-9, And 12-10.)

    Oki Data CONFIDENTIAL 12.3.5 Paper Feeding (See Figures 12-8, 12-9, and 12-10.) Line feeding is done by the rotation of the feed roller, platen, and sheet feeder, which are driven by a stepping motor. (1) Paper Feeding The stepping motor for line feeding is mounted on the left-hand frame.
  • Page 142 Oki Data CONFIDENTIAL (2) Cut-Sheet/Continuous-Form Selector Mechanism The selection of cut sheets and continuous forms is made by switch operation on the printer’s operating panel. Press the paper-mode switch on the operating panel to select [MANUAL]. The cut-sheet/ continuous-form selector motor begins to run and slides the mode rack, driving via the gears and shafts.
  • Page 143 Oki Data CONFIDENTIAL Mode rack R Upper roller Cut-sheet/continuous-form selector motor Mode shaft Sensor PCB Mode rack L Continuous-form retraction (rear) Continuous-form (rear) Cut sheet Continuous-form (front) Continuous-form retraction (front) Figure 12-9 143 / 43404501TH Rev.2...
  • Page 144 Oki Data CONFIDENTIAL Cut sheet Yawing shaft Drive shaft Upper roller Roller-arm end Feed roller Continuous form Release (Continuous-form retraction) Figure 12-10. Positions of the Upper Roller 144 / 43404501TH Rev.2...

  • Page 145: Paper End Detection Mechanism (See Figure 12-11.)

    Oki Data CONFIDENTIAL 12.3.6 Paper End Detection Mechanism (See Figure 12-11.) A reflective sensor is used to detect whether paper is loaded. From the position detected by this sensor, the remaining amount of paper is calculated and paper end is detected in accordance with the menu setting.

  • Page 146: Skew Correction Mechanism/Skew Detection Mechanism

    Oki Data CONFIDENTIAL 12.3.7 Skew Correction Mechanism/Skew Detection Mechanism The skew correction mechanism detects paper on the table, and presses the paper to the feed roller using the slip roller to automatically correct the skew of the paper (see figure 12-12).
  • Page 147 Oki Data CONFIDENTIAL The skew detection mechanism detects skew of the paper by monitoring the leading edge of paper fed by the feed rollers using the seven paper end sensors (reflective sensors) mounted in parallel to the feed rollers (Figure 12-13).

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