Removing The Circuit Board Assembly - Epson Stylus COLOR 880 Service Manual

EPSON Stylus COLOR 880

4.2.2 Removing the Circuit Board Assembly

Since the Main Board and Power Supply Circuit Board are built in a separate
bracket from the Printer Mechanism, remove the whole bracket from the printer
mechanism.
1) Remove the Upper Housing. (Refer to Section 4.2.1.)
2) Remove the 2 screws (No.1) securing the M/B Shield Plate on the printer
mechanism. Refer to Figure 4-3.
Holder A Holder B
No.1 Screws
Figure 4-3. Removing the M/B Shield Plate
3) Pull out the "M/B Shield Plate Assembly" a little bit and remove cables
which are hung on the holders A and B as you can see in Figure 4-3. Then
take all cables below out of the connectors on the main board.
CN1(AC Source on PS board)
CN5 (PE sensor)
CN6 (ASF HP sensor)
CN7 (ASF/Pump motor)
CN8 (Head FFC1)
CN9 (Head FFC2)
CN10 (PS Cable)
CN11 (Control Panel)
CN12 (PF Encoder Sensor)
CN13(PF motor)
CN14(CF motor)
A fter rem oving all the cables from the M ain B oard, detach the S hield P late M /B
A ssem bly com pletely from the printer m echanism .
Disassembly and Assembly
No.1 Screws
Disassembly Procedures
4) When removing each Circuit Board unit from the "M/B Shield plate",
remove the screws securing each unit and shield plate.
C378MAIN: Total 6 screws
(No.1 screw: 3 screws)
(No.5 screw: 3 screws)
C378PSB/PSE: Total 4 screws
(No.1 screw: 3 screws)
(No.10 screws: 1 screws)
Refer to the next page for Figure 4-4. Also, when removing the Power Supply
Board, remove the cable connecting to the CN10 (locking type) on the Main
Board.
Revision A
83