Epson LQ-510 - Chapter 4 Disassembly, Assembly, and Adjustment

REV.-A
DISASSEMBLY, ASSEMBLY, AND ADJUSTMENT
CHAPTER 4
DISASSEMBLY, ASSEMBLY, AND ADJUSTMENT
4.1 GENERAL REPAIR INFORMATION ...................................................
4-1
4.2 DISASSEMBLY AND REASSEMBLY
................................................. 4-3
4.2.1 Printhead Removal
.............................................................. 4-3
4.2.2 Removal of Cases ............................................................... 4-5
4.2.2.1
Upper Case Removal
............................................. 4-5
4.2.2.2 Control Panel (SANPNL) Board Removal..
............... 4-7
4.2.3 Removal of Circuit Boards ................................................... 4-8
4.2.3.1
SAMA Board Removal
........................................... 4-8
4.2.3.2 SANPS(E) Board Removal
......................................
4-10
4.2.4 Removal of Printer Mechanism
.............................................
4-11
4.2.4.1
Removal of Platen Unit and Paper Guide..
.............. 4-11
4.2.4.2 Removal of Printer Mechanism
..............................
4-14
4.2.5 Disassembly of Printer Mechanism
....................................... 4-15
4.2.5.1
4.2.5.2
4.2.5.3
4.2.5.4
4.2.5.5
4.2.5.6
4.2.5.7
4.2.5.8
4.2.5.9
Removal of the
Paper-Feed
Mechanism.. ................ 4-15
Removal of Paper-Feed Motor, Release Lever, and
Release/Tractor Sensor
........................................ 4-17
Removal of Paper-End Sensor
...............................
4-19
Disassembly of Platen Unit ....................................
4-19
Removal of Carriage Unit
...................................... 4-20
Removal of Carriage Motor
.................................... 4-23
Removal
of Home-Position Sensor..
....................... 4-24
Disassembly of
Ribbon-Feed
Mechanism.. .............. 4-24
Disassembly of Tractor Unit
..................................
4-25
4.3 ADJUSTMENT................................................................................ 4-27
4.3.1 Platen Gap Adjustment
........................................................ 4-27
4.3.2 Adjustment of Bidirectional Printing Alignment ..................... 4-29
4.3.2.1
Bidirectional
Adjustment DIP Switch.. .................... 4-29
4.3.2.2 Adjustment Procedures
......................................... 4-30
LIST OF FIGURES
Figure 4-1.
Figure 4-2.
Figure 4-3.
Figure 4-4.
Figure 4-5.
Figure 4-6
Paper Tension Unit Cover ................................................
4-3
Printhead Removal ..........................................................
4-4
Net
.................................................................................
4-4
Push Tractor Removal
.....................................................
4-5
Upper Case Removal - 1 ..................................................
4-6
Upper Case Removal - 2
.................................................
4-6
LQ-510
4-i