![background image](http://html1.mh-extra.com/html/okidata/ml172-series/ml172-series_service-manual_3653028003.webp)
Table of Contents
Page
Service Guide ML172/ML182 Series
0 About This Manual
Front Cover
1
Copyright
2
1 General Description & Specifications
1.1 General Description
3
....1.1.1 ML172
4
....1.1.2 ML182
5
....1.1.3 ML182-PLUS
6
....1.1.4 ML182-TURBO
7
1.2 Specifications
8
2 Principles of Operation
2.1 Electrical Principles Of Operation
9
....2.1.1 Power Supply
10
....2.1.2 Control PCB
11
....2.1.3 Interconnect Board
12
....2.1.4 Operator Board
13
2.2 Mechanical Principles Of Operation : Printhead
14
....2.2.2 Head Gap Adjusting Mechanism
15
....2.2.3 Space Mechanism / Operation
16
....2.2.4 Ribbon Feed Mechanism / Operation
17
....2.2.5 Paper Feed Mechanism / Operation
18
....2.2.6 Paper-end Detection Mechanism
19
....2..2.7 Semi-Automatic Sheet Feed (SASF)
20
3 Printer Maintenance
3.1 General Information
21
....Figure 3-1a - ML172
22
....Figure 3-1b - ML182
23
....Figure 3-1c - ML182-PLUS/ML182-TURBO
24
3.2 Maintenance Procedures
25
....3.2.1 Upper Cover
26
....3.2.2 Control Board
27
....3.2.3 Transformer Assembly
28
....3.2.4 Power Supply Board
29
....3.2.5 Operation Board
30
....3.2.6 Printhead
31
....3.2.7 Ribbon Feed Gear Assembly
32
....3.2.8 Space Motor Assembly
33
....3.2.9 Space Rack
34
....3.2.10 Carriage Cable
35
....3.2.11 Printer Mechanism
36
....3.2.12 Linefeed Motor Assembly
37
....3.2.13 Column Indicator Bar
38