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Epson LQ 300 - Overview

Epson LQ 300
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CHAPTER 3 Disassembly and Assembly
Table of Contents
3.1 OVERVIEW
3-1
3.1.1 Disassembly Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3.1.2
ToOIS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-1
3.1.3 Service ChecksAfterRepair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.4
Specificationsfor
Screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2 DISASSEMBLY
AND ASSEMBLY
3-4
3.2.1 Removing the Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
Removing the Upper Housing Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.2.2.1 Removing the Eject Roller Assembly . . . . . . . . . . . . . . . . . . . . . 3-6
Removing the MAIN and
PSB/PSE Board Assemblies. . . . . . . . . . . . . . 3-7
3.2.3.1 Removing the
MAIN
Board Assembly. . . . . . . . . . . . . . . . . . . . . 3-8
3.2.3.2 Removing the
PSB/PSE Board Assembly. . . . . . . . . . . . . . . . . . 3-8
Removing the Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.2.4.1 Removing the PF Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-10
3.2.4.2 Removing the CR Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-11
3.2.4.3 Removing the Platen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.2.4.4 Removing the
PE Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-13
3.2.4.5 Removing the HP Sensor. ., . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.2.4.6 Removing the Release Lever Position Sensor . . . . . . . . . . . . . 3-14
3.2.4.7 Removing the Carriage Assembly. . . . . . . . . . . . . . . . . . . . . . . 3-15
3.2.4.8 Removing the Ribbon Drive Gear Assembly. . . . . . . . . . . . . . . 3-16
3.2.4.9 Removing the PG Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Removing the Interface Board Assembly. . . . . . . . . . . . . . . . . . . . . . . . 3-18
Removing the Driven Roller Assembly . . . . . . . . . . . . . . . . . . . . . . . . .
3-19
Disassembling and Assembling the Color Upgrade Kit. . . . . . . . . . . . . 3-20
3.2.7.1 Removing the Ribbon Motor Assembly. . . . . . . . . . . . . . . . . . . 3-20
3.2.7.2 Removing the
CS
Cam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-20
3.2.7.3 Removing the Color Sensor Assembly. . . . . . . . . . . . . . . . . . . 3-20

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