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ML172 Series
OKIDATA ML172 Series Service Manual
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OKIDATA ML172 Series Service Manual
Table of content
Contents
Copyright
Table Of Contents
Table Of Contents
General Description & Specifications 1.1 General Description
ML172
ML182
ML182-PLUS
ML182-TURBO
Specifications
Principles of Operation 2.1 Electrical Principles Of Operation
Power Supply
Control PCB
Interconnect Board
Operator Board
Mechanical Principles Of Operation : Printhead
Head Gap Adjusting Mechanism
Space Mechanism / Operation
Ribbon Feed Mechanism / Operation
Paper Feed Mechanism / Operation
Paper-end Detection Mechanism
Semi-Automatic Sheet Feed (SASF)
Printer Maintenance 3.1 General Information
Figure 3-1c - ML182-PLUS/ML182-TURBO
Maintenance Procedures
Upper Cover
Control Board
Transformer Assembly
Power Supply Board
Operation Board
Printhead
Ribbon Feed Gear Assembly
Space Motor Assembly
Space Rack
Carriage Cable
Printer Mechanism
Linefeed Motor Assembly
Column Indicator Bar
Platen Assembly
Paper Chute Assembly
Bottom Paper Guide Assembly
Near-end Lever And Bracket
Bottom Near-end Lever
Adjustments
Space Rack and Roller Gap Adjustment
Printer Self-Tests
Preventive Maintenance
Failure Analysis Procedures 5.1 Failure Analysis Procedure
RAP Index
Board layout and Wiring - ML182Plus and ML182Turbo
Pin Numbers and Signals
Check Points for Printed Circuit Boards - ML182Plus and
RAP #2: Power LED lights, but the carriage does not
RAP #3: Carriage movement is abnormal when power is
RAP #10: Wrong characters are printed or some
RAP #12: Print is light
RAP #13: Line feed is not performed
RAP #14: Fuse F1 on power supply board blows while
RAP #15: Switch on the operator panel does not work
ML172 Control Board (SLMR-51 & SLMR-52) and Operator
ML182 Control Board (SLMR) and Operator Board
ML182-PLUS & ML182-TURBO Control Board (SLMX) and
B Parts Compatability Chart Parts Compatability Chart
Page: 60
Service Guide ML172/ML182 Series
Chapter 5 Failure Analysis Procedures
Rap #3: Carriage movement is abnormal when power is turned on
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This manual is suitable for:
ML172 Series
ML182 Series
ML182-PLUS
ML182-TURBO
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