C229Main Board Removal - Epson FX-880 Service Manual

4.2.5 C229MAIN Board Removal

WARNING
„ Before disassembling, assembling or adjusting the printer,
„ Do not touch the heat sink attached to the switching FET (Q1) on the
„ Never touch the heat sink attaches to the switching FET (Q1) while at
1. Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, knob and
tractor unit. (See Section 4.2.3.)
2. Remove the upper housing. (See Section 4.2.4.)
3. Remove 5 CBS (M3
printer mechanism and lower housing and remove the shield cover.
4. Disconnect the harnesses from the connectors CN3, CN4, CN5, CN6, CN7, CN8, CN9,
CN10, CN11 and CN12 on the C229MAIN board.
5. Remove 2 CBS (M3
GROUNDING PLATE.
6. Remove 6 CBB (3
7. Remove the GUIDE, I/F BOARD and GROUNDING PLATE,I/F,UPPER
8. Remove 2 CP (M3
and remove I/F GROUNDING PLATE.
CAUTION
„ Be careful with the edges of the shield plate, as they are very sharp.
„ Make sure to match the connectors ' color each other. But, the yellow
„ The red line side of the harnesses for CN3, CN8 and CN9 must be set
If replace the C229MAIN Board, perform the Default setting and Bi-d
adjustment to store the new data into the EEPRM on the main board.
(Refer to Chapter 5.)
Rev. A
disconnect the power supply cable from the AC power socket.
Failure to do it cause personal injury.
power supply board, just after power off as it may be very hot.
AC power cable is connected to the AC outlet, as it is not electrically
isolated.
4) screws and 3 CBB (3
12) screws securing COVER,CONNECTOR,UPPER to the I/F
12) screws securing C229MAIN Board to the lower case.
8) screws securing the I/F GROUNDING PLATE to the C229MAIN board
harness must be connected to CN10, and the blue harness must be
connected to CN11.
No.1 pin side.
Chapter 4 DISASSEMBLY AND ASSEMBLY
12) screws securing the shield cover to the
FX-880 Service Manual
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