Removing The Main Board Assembly; Removing The Psb/Pse Board Assembly - Epson LQ-300 Service Manual

Disassembly and Assembly
Removing the
3.2.3.1
1. Remove the PSB/PSEboard assembly FFC fromconnector CN20fthe MAIN board assembly.
2. Remove the CBC (M3x8)screwand the3CBUSCAC (M3 x8).
3. Remove the MAIN board assembly.
3.2.3.2

Removing the PSB/PSE Board Assembly

Remove the FFC for the PSB/F'SE board assembly from connector CN2 on the MAIN board
assembly.
2. Remove he CB USCA C (M3 x 10) screw and 2 CB USCA C (M3 x 8) screws.
3. Remove the PSB/PSEboard assembly.
When replacing the MAIN board assembly, bend the LED lead wires parallel to the MAIN
board assembly (see Figure 3-7).
The shield plate is easily bent; be carefil when tightening the screws that attach it to the
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Figure 3-6. Removing MAIN and PSB/PSE Board Assemblies
MAIN Board Assembly
Figure 3-7. Bending the LED Lead
3-8
MAIN Board Assembly
.
.
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MAIN Board Assembly
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P l a t e CBUSCAC(M3X8)
Wires