Rice Lake Okidata 320-390-420 Turbo - Service Guide - Manual (Page 2)

Table of Contents Page
Service Guide ML320/321Turbo
0 About This Manual
Front Cover 1
1 Configuration
1.1. Standard Printer Configuration 2
1.2 Options 3
2 Operation Description
....2.1.1 Summary 4
....2.1.2 Microprocessor and the Peripheral Circuit 5
....2.1.3 Initialization 6
....2.1.4 Parallel Interface Control 7
....2.1.5 Print Control 8
....2.1.6 SP/LF Motor Control 9
....2.1.7 Operation Panel 10
....2.1.8 Alarm Circuit 11
....2.1.9 Power Supply Circuit 12
2.2 Mechanical Operation 13
....2.2.2 Spacing Operation (See Figure 2-4.) 14
....2.2.3 Head Gap Adjusting (See Figure 2-5.) 15
....2.2.4 Ribbon Drive (See Figure 2-6.) 16
....2.2.5 Paper Feed Operation 17
....2.2.6 Paper Detection Mechanism (See Figure 2-15.) 18
....2.2.7 Automatic Sheet Feed 19
....2.2.8 Paper Park Function (Continuous sheet paper) 20
3 Parts Replacement
3. ASSEMBLY/DISASSEMBLY 21
3.1 Precautions for Parts Replacement 22
3.2 Service Tools 23
3.3 Disassembly/Reassembly Procedure 24
....3.3.1 Printhead 25
....3.3.2 Ribbon Protector 26
....3.3.3 Pull-up Roller Assy 27
....3.3.4 Upper Cover, Access and Sheet Guide Assy 28
....3.3.5 Gear Case Assy 29
....3.3.6 PC Connector 30
....3.3.7 Space Motor, Guide Roller Assy 31
....3.3.8 Space Rack 32
....3.3.9 Carriage Cable 33
....3.3.10 Backup Roller Holder Assy 34
....3.3.11 Platen Assy 35
....3.3.12 Driver Board (SDDV) 36
....3.3.13 LF Motor 37
....3.3.14 Operation Panel PCB (LEOP) 38