Table of Contents
Page
Service Guide OL400
0 About This Manual
Front Cover
1
Copyright & Manual Revision
2
Part Number
3
1 Product Specifications
1.1 Overview
4
1.2 Physical Specifications
5
1.3 Print Specifications
6
1.4 Paper Specifications
7
1.5 Power Requirements
8
1.8 Options
9
1.9 Consumables
10
1.10 Reliability Data
11
2 Principles of Operation
2.1 Printer Overview
12
2.2 Main Control Function
13
....2.2.02 Centronics Parallel Interface
14
....2.2.03 RS-232C Serial Interface
15
....2.2.04 Optional Font Card
16
....2.2.05 Optional RAM Board / IC Set
17
2.3 Printer Control Function
18
....2.3.02 Operation Panel
19
....2.3.03 Engine Board
20
....2.3.04 Power Supply Unit
21
....2.3.05 Fuser Unit
22
....2.3.06 Main Motor (Drum Motor)
23
....2.3.07 LED Head
24
....2.3.08 Resist Motor
25
....2.3.09 DC Fan
26
2.4 Mechanical Operation Description
27
....2.4.02 OL400 Printing Process
28
....2.4.03 Process Descriptions
29
2.5 Sensors And Switches
30
....2.5.01 Sensors and Switches
31
....2.5.02 Sensor Functions
32
3 Maintenance & Disassembly
3.1 Maintenance
33
....3.1.02 Maintenance Tools
34
....3.1.03 Maintenance Precautions
35
3.2 Disassembly/Assembly Procedures
36
....3.2.01 Upper Cover
37
....3.2.02 LED Head
38
