Epson LQ 300 - Removing the MAIN Board Assembly; Removing the PSB;PSE Board Assembly

Disassembly and Assembly
LQ-300 Service Manual
3.2.3.1 Removing the MAIN Board Assembly
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
1. 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
MAW and PSBIPSE board assemblies.
CBUSCA C(M3X1O)
CBUSCA C(M3X8)
\
CBUSCA C(M3X8)
*A
/
CBC(M3X8)
FFc shield Plate CBUSCAC(M3X8)
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.
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.
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PSB/PSE Board Assembly
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MAIN Board Assembly
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Figure 3-6. Removing MAIN and PSB/PSE Board Assemblies
MAIN Board Assembly
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Figure 3-7. Bending the LED Lead Wires
3-8
Rev.A