Manuals / Oki / Computer Equipment / Printer

Oki 3321, 3320 specifications

Models: 3320 3321

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

Page 124

Replace RS232C board.

Remedied?

No Yes

End

Replace Driver board.

6 – 21

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Image 124

Oki 3321, 3320 specifications

Page 123 Page 125

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Contents

Printer Preface Table of Contents Troubleshooting and Repair Adjustment Cleaning and LubricationAppendix PCB Layout Spare Parts List Configuration Configuration Standard Printer Configuration Options Page Theory of Operation Theory of Operation Electrical Operation TSD AUTO-LF MPU Clock MPU RASCS1 CAS Eeprom EEDIN-P EECS-P EEDOUT-P EECLK-P Eeprom LSI Lsics ALEALE RDN WRL Lsic MPU Reset LSI ResetCheck Busy OFF MPU 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 Rear Bottom Bottom OFF TOP 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 Replacement Service Tools Service tools Disassembly/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 Cleaning Carriage 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 Troubleshooting Table Troubleshooting and RepairItems to Check Before Repair Printer mode display Lamp Display 1/2 2/2 Page Connection Circuit Check for Printhead and SP/LF Motor CN1 HEAD1 HEAD2 HEAD4 HEAD6 HEAD8Htemp HEAD9 HEAD7 HEAD5 HEAD3 LF1 LF2 LF3 LF4 SP-U SP-V SP-W Troubleshooting 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 a PCB Layout PCB list Appendix 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 Element Description Operation DescriptionCircuit Description ROM If WRRAM Page Communication Procedure Flowchart Mode a Figure C-2-3 Before Repairing a Fault Troubleshooting FlowchartTroubleshooting 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

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