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Oki
3321, 3320
specifications
Appendix D CSF Option
Models:
3320
3321
1
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155
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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
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Image 154
APPENDIX D CSF (Option)
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Contents
Printer
Preface
Table of Contents
Troubleshooting and Repair
Adjustment Cleaning and Lubrication
Appendix 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
CS1
MPU
RAS
CAS
Eeprom
EEDIN-P EECS-P EEDOUT-P EECLK-P Eeprom
LSI
Lsics ALE
ALE RDN WRL Lsic
Check
MPU Reset
LSI Reset
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 unit
Page
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 Repair
Items to Check Before Repair
Printer mode display
Lamp Display
1/2
2/2
Page
Htemp
Connection Circuit Check for Printhead and SP/LF Motor
CN1 HEAD1 HEAD2 HEAD4 HEAD6 HEAD8
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
SSD
TXD
RXD
DTR
Page
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 Description
Circuit Description
ROM
If WR
RAM
Page
Communication Procedure Flowchart
Mode a
Figure C-2-3
Before Repairing a Fault
Troubleshooting Flowchart
Troubleshooting
Figure C-3-1
Figure C-3-3
Figure C-3-5
Local Test
RTS CTS SSD DTR DSR
Page
Appendix D CSF Option
People to People Technology
