Removing The Main And Psb/Pse Board Assemblies - Epson LQ-300 Service Manual

3.2.3 Removing the MAIN
Remove the printer cover assembly, edge guide assembly, ribbon cartridge, tractor assembly,
1.
platen knob, and optional color upgrade kit.
Remove the upper housing assembly (see Section 3.2.2).
2.
Disconnect 4 flexible flat cables (FFCS) and 7 connectors from the MAIN and PSB/PSE board
3.
assemblies.
Remove 4 CBB (M3 x 8) screws attaching the shield plate to the MAIN and PSB/PSE board
assemblies, the CBB (M3 x 8) screw attaching the CS board, and the CB(0) (M4 x 8) screw
attaching the ground wire of the power cable.
Disengage the shield plate and
5.
plate.
MA
and PSB/PSE Board Assemblies
W and
Grounding Plate
Figure 3-5. Removing
Disassembly and Assembly
Shield Plate
/
Shield Plate
the
M4x8)
Wire
er Cable
3-7