Manuals / Oki / Computer Equipment / Printer

Oki 3321, 3320 specifications Assembly/Disassembly

Models: 3320 3321

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Troubleshooting Specifications Parts list Head Drive Timing Chart Configuration Before Repairing a Fault MPU Reset Assembly/Disassembly Adjustment Cleaning and Lubrication

Page 56

3. ASSEMBLY/DISASSEMBLY

Page 55 Page 57

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Oki 3321, 3320 specifications Assembly/Disassembly

Page 55 Page 57

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Manual 155 pages 19.46 Kb

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Contents

Printer Preface Table of Contents Appendix PCB Layout Spare Parts List Adjustment Cleaning and LubricationTroubleshooting and Repair Configuration Configuration Standard Printer ConfigurationOptions Page Theory of Operation Theory of Operation Electrical OperationTSD AUTO-LF MPU Clock MPU RASCS1 CASEeprom EEDIN-P EECS-P EEDOUT-P EECLK-P EepromALE RDN WRL Lsic Lsics ALELSI MPU Reset LSI ResetCheck Busy OFFMPU Head Drive Timing Chart Platen Pin coil current Pin 1 Pin 1, 2, 8 Print Head Page Hall AMP Input Output SPU SPV SPW Open Utility Mode PHASE-A PHASE-B Forward Reverse LSI Optd Opck NPA2 Oprd Optxd Opclk Optxd Powlev Temp Stop 119C Mode up Mode down Uses of output voltages and signals are described below Mechanical Operation Page When printing Page Page Page Range from 5 to Page Ribbon cartridge Drive gear Ink tank Page TOP RearBottom Bottom OFFTOP Page Platen gear Paper Idle gear Tractor gear Change gear Pull tractor Drive gear Idle gear Platen gear Push tractor Page Page Bottom Open TOP Close Rear Bottom Rear Page Page Page Platen Ribbon protector Printhead Carriage frame assembly Rear TOP Bottom SW2 SW1 Page Park ASSEMBLY/DISASSEMBLY ASSEMBLY/DISASSEMBLY Precaution for Parts ReplacementService Tools Service toolsDisassembly/Reassembly Procedure Printer unitPage Page Page Page Page Page Page Page Page Claw Page Page Sensor Lock a Page Page Page Page Page Page Page Page Page Adjustment Adjustment Specification Drawing Measured With Adjust lever Confirm followings Friction Rotation of the push To confirm Tractor Ribbon feed To confirm Engagement Cleaning and Lubrication Cleaning and Lubrication CleaningCarriage shaft Lubrication Lubrication point Ribbon feed gear Assy Platen Assy Tractor driving mechanism Pressure roller Pull up roller Assy Main chassis Assy Carriage Assy Troubleshooting and Repair Items to Check Before Repair Troubleshooting and RepairTroubleshooting Table Printer mode display Lamp Display1/2 2/2 Page Connection Circuit Check for Printhead and SP/LF Motor CN1 HEAD1 HEAD2 HEAD4 HEAD6 HEAD8Htemp HEAD9 HEAD7 HEAD5 HEAD3LF1 LF2 LF3 LF4SP-U SP-V SP-WTroubleshooting flow chart CN2 Page Page Pull up roller cover Platen Paper Ribon Protector Page Page Page Page Page Page TXD RXDSSD DTRPage Appendix a Appendix a BIT Image Graph is DOT Density Appendix aPCB Layout PCB listAppendix B Spare Parts List Upper Cover Assy Description Qty Remarks Printer General Assy ROM 1716 2931 Printer Unit Description Qty Carriage Assy Carriage Option Assy Option Spare Parts LXHI-PCB RS232 I/F Appendix C Appendix C RS-232C Serial Interface Board General Circuit Description Operation DescriptionElement Description RAM If WRROM Page Communication Procedure Flowchart Mode aFigure C-2-3 Troubleshooting Troubleshooting FlowchartBefore Repairing a Fault Figure C-3-1 Figure C-3-3 Figure C-3-5 Local Test RTS CTS SSD DTR DSRPage Appendix D CSF Option People to People Technology