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Removing The Main Board - Epson Perfection 4490 photo Service Manual

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EPSON Perfection 4490 Photo

4.2.5 Removing the Main Board

1.
Release the Carriage Lock.
See Section 4.2.3 Step 1
2.
Remove the Upper Housing.
See Section 4.2.2 on page 33.
3.
Move the Carriage Unit to the front of the main unit.
4.
Remove the Carriage Lock from the Lower Housing.
Carriage Lock
Figure 4-12. Removing the Carriage Lock
Disassembly / Assembly
5.
See Section 4.2.3 Step 3
Disassembly Procedure
Remove the Main Board Cover in the following procedure.
1.
Remove the C.B.P. M3 x 8 screw and C.B.P. M3 x 12 screws that secure the
Main Board Cover.
2.
Remove the two C.B.P. M3 x 8 screw that secure the Main Board from the
rear of the main unit.
C.B.P. 3 x 8
(4±1 kgf.cm)
Main Board Cover
Figure 4-13. Removing the Main Board Cover (1)
Revision B
Rear of the Main Unit
C.B.P. 3 x 12
(6.5±0.5 kgf.cm)
C.B.P. 3 x 8
(6.5±0.5 kgf.cm)
37

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