TROUBLESHOOTING
3.1 OVERVIEW .......................................................................................... 3-1
3.1.1 Main Component Checking Point ............................................................... 3-1
3.1.2 Error............................................................................................................... 3-3
3.2 UNIT LEVEL TROUBLESHOOTING.................................................... 3-4
3.3 UNIT REPAIRING OF THE POWER SUPPLY BOARD ..................... 3-11
3.4 UNIT REPAIRING OF THE MAIN BOARD......................................... 3-13
3.5 REPAIRING THE PRINTER MECHANISM......................................... 3-16
DISASSEMBLY AND ASSEMBLY
4.1 OVERVIEW .......................................................................................... 4-1
4.1.1 Disassembly Precautions ........................................................................... 4-1
4.1.2 Tools and Instruments................................................................................. 4-1
4.1.3 Service Check After Repair.......................................................................... 4-2
4.1.4 Abbreviations for Small Parts...................................................................... 4-3
4.2 DISASSEMBLY AND ASSEMBLY....................................................... 4-4
4.2.1 Printhead Removal....................................................................................... 4-5
4.2.2 HP (Home Position) Detector Removal....................................................... 4-6
4.2.3 Pre-disassembly Procedures ...................................................................... 4-7
4.2.4 Upper Housing Removal.............................................................................. 4-8
4.2.5 C229MAIN Board Removal........................................................................... 4-9
4.2.6 C229PSB/PSE/PSH Board Removal.......................................................... 4-11
4.2.7 ROM Removal ............................................................................................. 4-12
4.2.8 Platen Removal........................................................................................... 4-13
4.2.9 Printer Mechanism Removal...................................................................... 4-14
4.2.10 Printer Mechanism Disassembly............................................................. 4-15
4.2.10.1 CR Motor Removal.......................................................................... 4-15
4.2.10.2 PF Motor Removal .......................................................................... 4-16
4.2.10.3 PF Gear Train Disassembly............................................................ 4-17
4.2.10.4 PG (Platen Gap) Detector Removal................................................ 4-18
4.2.10.5 Release Detector Removal ............................................................. 4-18
4.2.10.6 Front PE (Paper End) Detector Removal........................................ 4-19
4.2.10.7 Rear PE Detector Removal............................................................. 4-19
4.2.10.8 Carriage Assembly Removal........................................................... 4-20
4.2.10.9 Rear Paper Guide Assembly Removal............................................ 4-21
4.2.10.10 Ribbon Drive (RD) Assembly Removal ......................................... 4-22
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