Disassembly And Assembly; Removing The Printhead - Epson LQ-300 Service Manual

Disassembly and Assembly

DISASSEMBLY
3.2
This section describes the procedures for disassembling and assembling the main components of
the printer. When the procedure for installing a component is simply the reverse of the procedure
for removing the component, no description of the installation is given. Any points of special
concern follow the description of the procedure.
Before disassembling any part of the printer, note the warnings in Section 3.1.
Before disassembling any part of the printer, remove the paper and the ink rt"bbon.
Disassembly includes the following seven procedures:
1.

Removing the printhead.

2. Removing the upper housing assembly.
3. Removing the MAIN and PSB/PSE board assemblies.
4. Removing the printer mechanism.
Removing the interface board assembly.
5.
6. Disassembling the driven roller assembly.
7. Disassembling the color upgrade kit
Refer to the diagrams in the appendix to see how components fit together.
1
Unplug the power cable and the
interface cable from h prfntart
3.2.2.1
Rem-wing the Upper Housing Assembly
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Removing the MAIN and PSB/ PSE Boerd Assemblies
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3.2.4.1
Removing the PF Motor
3 . 2 . 4 . 3
Removing the Platen
3 . 2 . 4 . 5
3 . 2 . 4 . 9
Removing the PG Sensor
3 . 2 . 5
Removing the Interface Board Assembly
Figure 3-1. Procedure for Disassembling the Printer
3-4
AND ASSEMBLY
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3 - 1 7
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Removing the Driven Roller Aawmbly
Removing the Release Lever Position Sensor
1
3 . 2 . 4 . 8
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