Pbma Board; Pebfil Board - Epson L-1000 Technical Manual

REV.-A
DISASSEMBLY, ASSEMBLY, AND
GENERAL REPAIR INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1
DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . ........... 4-3
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.3 ADJUSTMENT ................................................................................
4.3.1
4.3.2
LQ-500/ L-1000
CHAPTER 4
ADJUSTMENT
Removal of Printhead .........................................................
Removal of Cases ...............................................................
4.2.2.1 Upper Case Removal ............................................
Control Panel (PEBPNL Board) Removal.. .............. 4-5
4.2.2.2
Removal of Circuit Boards ..................................................
4.2.3.1 PBMA Board Removal ..........................................
PEBFIL Board Removal ........................................
4.2.3.2
4.2.3.3 Transformer Removal ...........................................
Removal of Printer Mechanism ............................................
Removal of Platen Unit and Paper Guide.. ............. 4-8
4.2.4.1
4.2.4.2 Removal of Printer Mechanism .............................. 4-9
Disassembly of Printer Mechanism ......................................
4.2.5.1 Paper-Feed Mechanism Removal.. ......................... 4-11
4.2.5.2 Removal of Paper-Feed Motor.. ............................. 4-14
4.2.5.3 Removal of Paper-End Sensor .............................. 4-15
4.2.5.4 Disassembly of Platen Unit ................................... 4-15
Removal of Carriage Unit ......................................
4.2.5.5
4.2.5.6 Removal of Carriage Motor ...................................
4.2.5.7 Removal of Home-Position Sensor ........................ 4-19
4.2.5.8 Disassembly of Ribbon-Feed Mechanism ............... 4-20
4.2.5.9 Disassembly of Tractor Unit.. ................................ 4-21
Platen Gap Adjustment .......................................................
Bidirectional Printing Alignment Adjustment ......................... 4-25
4.3.2.1
Specifications of VRl and VR2 ............................. 4-25
4.3.2.2
Adjustment Procedures ........................................
4-3
4-4
4-4
4-5
4-5
4-7
4-7
4-8
4-11
4-16
4-18
4-23
4-23
4-27
4-i