Oki ML421 Maintenance Manual - Page 56

Operation panel Board LEOP

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Oki Data CONFIDENTIAL [How to Change Parts] This section explains how to change parts and assemblies appearing in the disassembly diagram below. Printer unit 3.3.1 Printhead 3.3.2 Ribbon protector 3.3.3 Pull-up roller assy 3.3.4 Upper cover, access cover and sheet guide 3.3.5 Gear case assy 3.3.6 PC connector 3.3.7 Space motor and guide roller assy 3.3.8 Space rack 3.3.9 Carriage cable 3.3.10 Back-up roller holder assy 3.3.11 Platen assy 3.3.19 Paper pan 3.3.12 Control Board (NNS) 3.3.13 LF motor 3.3.18 Carriage shaft 3.3.14 Operation panel Board (LEOP) 3.3.15 Power Supply Board (TPW) 3.3.16 Transformer assy 3.3.17 Change lever and gears 3.3.20 Rear tractor assy 3.3.21 Rear pressure assy 3.3.22 Switch lever 42113901 Rev.2 56 /

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42113901
Rev.2
56 /
Oki
Data
CONFIDENTIAL
[How to Change Parts]
This section explains how to change parts and assemblies appearing in the disassembly diagram
below.
Printer unit
3.3.1
Printhead
3.3.2
Ribbon protector
3.3.3
Pull-up roller assy
3.3.4
Upper cover, access cover and sheet guide
3.3.5
Gear case assy
3.3.6
PC connector
3.3.7
Space motor and guide roller assy
3.3.8
Space rack
3.3.9
Carriage cable
3.3.10
Back-up roller holder assy
3.3.11
Platen assy
3.3.19
Paper pan
3.3.12
Control Board (NNS)
3.3.13
LF motor
3.3.18
Carriage shaft
3.3.14
Operation panel Board (LEOP)
3.3.15
Power Supply Board (TPW)
3.3.16
Transformer assy
3.3.17
Change lever and gears
3.3.20
Rear tractor assy
3.3.21
Rear pressure assy
3.3.22
Switch lever