Main/B054Psh Board Removal - Epson GT-1200 Service Manual

GT-12000

4.2.1.2 MAIN/B054PSH Board Removal

B054MAIN and B054PSH boards stored in the shield compartment are
removed in the following procedure:
1. Remove the shield compartment. (See Section 4.2.1.)
2. Remove 12 screws (No.3) securing the top shield of the board unit,
then remove the top shield.
3. [MAIN board assembly removal]
Disconnect the connector cables from the connector CN5 and CN9 on
the MAIN board.
4. Remove the following screws securing the MAIN board, and remove
the MAIN board:
Ÿ 6 screws (No.3):
Fixing the board along the edges.
Ÿ 6 screws (No. 9):
Securing the I/F connector.
Ÿ 2 screws (No.10):
Securing the optional I/F connector.
.
5. [Power supply board assembly removal]
Remove the connector cables from the connector CN1 on the power
supply board assembly and the connector CN5 on the MAIN board
assembly.
6. Remove 6 screws (No.3) securing the power supply board assembly
and remove the power supply board.
S c r e w ( N o . 9 )
Figure 4-4. I/F Connector Fixing Screw Removal
Rev. A
Screws (No.3)
S c r e w L o c k S c r e w
( N o . 1 0 )
B054MAIN Board
Figure 4-5. MAIN Board Removal
Connector (CN5)
Screws (No.3)
Figure 4-6. Power Supply Board Removal
Disassembly and Assembly
Connector (CN5) Connector (CN9)
B054PSH Board
Connector (CN1)
4-4