CONTENTS
Chapter 1 PRODUCT DESCRIPTION
1.1 Overview.................................................................................................. 9
1.2 PG Setting ............................................................................................. 10
1.3 Functions .............................................................................................. 11
1.3.1 Control Panel ................................................................................ 11
1.3.2 Switches ........................................................................................ 11
1.3.3 Indicators ....................................................................................... 11
1.3.4 Switch Functions ........................................................................... 11
1.3.5 Indicator Display in Normal Mode ................................................. 12
1.3.6 Error Status ................................................................................... 13
1.4 Casing Specifications .......................................................................... 14
1.5 Accessories .......................................................................................... 14
Chapter 2 OPERATING PRINCIPLES
2.1 Overview................................................................................................ 16
2.2 Printer Mechanism ............................................................................... 16
2.2.1 Carriage Mechanism ..................................................................... 17
2.2.2 Printhead Specifications ................................................................ 20
2.2.3 Paper Feeding Mechanism ........................................................... 20
2.2.4 Paper Loading Mechanism ........................................................... 24
2.2.5 Ink System Mechanism ................................................................. 26
2.2.6 Ink Sequence ................................................................................ 28
2.2.7 Paper Cutter Mechanism .............................................................. 30
2.2.8 Power-On Sequence ..................................................................... 32
2.3 Electrical Circuitry Operating Principles............................................ 33
2.3.1 Power Supply Circuit Operating Principle ..................................... 33
2.3.2 C550 MAIN Circuit Operating Principle ......................................... 34
Chapter 3 TROUBLESHOOTING
3.1 Overview ............................................................................................... 38
3.1.1 Troubleshooting according to panel messages ............................ 38
3.1.2 Superficial Phenomenon-Based Troubleshooting ......................... 62
Chapter 4 DISASSEMBLY & ASSEMBLY
4.1 Overview ............................................................................................... 73
4.1.1 Precautions ................................................................................... 73
4.1.2 Tools to Be Used .......................................................................... 74
4.1.3 Screw List ..................................................................................... 75
4.1.4 Pre-Shipment Checks ................................................................... 76
4.2 Disassembly ......................................................................................... 77
4.2.1 Removing the Housings ................................................................ 78
4.2.2 Stacker Assy. ................................................................................ 82
4.2.3 Waste Ink Pads ............................................................................. 84
4.2.4 ASF Assy. ..................................................................................... 86
4.2.5 Removing the Boards ................................................................... 90
4.2.6 Disassembling the Printer Mechanism .......................................... 96
4.2.7 Removing the Motors .................................................................. 130
4.2.8 Removing the Sensors ................................................................ 133
Chapter 5 ADJUSTMENT
5.1 Adjustment Items and Overview....................................................... 140
5.1.1 Servicing Adjustment Item List .................................................... 140
5.1.2 Replacement Part-Based Adjustment Priorities .......................... 143
5.1.3 Required Adjustment Jigs, Tools and Like .................................. 145
5.2 Adjustments........................................................................................ 145
5.2.1 PF Belt Tension Adjustment ....................................................... 145
5.2.2 PG Adjustment ............................................................................ 147
Chapter 6 MAINTENANCE
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