Seips/Sanpse Board Unit - Epson SQ-B50/2550 Technical Manual

CHAPTER 4
GENERAL DESCRIPTION
4.1 BEFORE DISASSEMBLY 4-1
4.2 DISASSEMBLY AND ASSEMBLy 4-8
4.2.1 Printhead Replacement 4-10
4.2.2 Case Removal 4-13
4.2.2.1 Upper Case Removal 4-13
4.2.2.2 Control Panel Removal 4-14
4.2.2.3 Cover Open Sensor Removal 4-14
4.2.3 Tractor Unit Removal 4-15
4.2.4 Electric Circuit Board Removal 4-16
4.2.4.1 SEIMA Board Removal 4-16
4.2.4.2 SEIPS/SANPSE Board Unit Removal 4-17
4.2.4.3 Removing Other Electrical Components 4-18
4.2.5 Printer Mechanism Removal 4-18
4.2.6 Printer Mechanism Unit Disassembly " 4-20
4.2.6.1 Paper Bail Removal 4-20
4.2.6.2 Carriage Motor Removal 4-21
4.2.6.3 Carriage Unit Removal 4-22
4.2.6.4 Paper Feed Motor Removal 4-25
4.2.6.5 Release Trigger Solenoid Removal 4-26
4.2.6.6 Pump Unit Removal 4-27
4.2.6.7 Pump Unit Disassembly 4-28
4.2.6.8 Ink End Sensor and Thermistor
Set Removal 4-33
4.2.6.9 Home Position Sensor Removal 4-35
4.2.6.10 Top Edge Sensor Board and
CSF Sensor Removal 4-36
4.2.6.11 Platen Unit Removal 4-38
4.2.6.12 Top Edge Holder Set and Top Edge Holder
Transmission Shaft Set Removal 4-39
4.2.6.13 Paper End Sensor Removal 4-41
4.2.6.14 Paper Feed Roller Shaft Set Removal 4-42
4.2.6.15 TE Motor Removal 4-43
4.3 ADJUSTMENT 4-46
4-i
REV.-A