C229 Main Board Removal - Epson FX-880 Service Manual

C229 Main Board Removal

1. Follow the disassembly preparation procedure (see page 3-8).
2. Remove the upper housing (see page 3-9).
3. Remove the 5 CBS (M3 × 4) screws and 3 CBB (3 × 12) screws securing the shield cover to the
printer mechanism and lower housing; then remove the shield cover. See Figure 3-6.
4. Remove the connector cables from CN3, CN4, CN5, CN6, CN7, CN8, CN9, CN10, CN11, and CN12
on the C229 main board.
Note: Most of the cables are easily removed by pulling them straight up and out of their sockets.
However, with CN3, CN8, and CN9, you must first raise the head of the connector socket. To do this,
grasp the two small tabs on each end of the socket's head, and pull straight up. Then pull out the
cable.
5. Remove the 2 CBS (M3 × 12) screws securing the upper interface cover to the upper interface
grounding plate, then remove the grounding plate.
6. Remove the remaining 5 CBB (3 × 12) screws that secure the C229 main board to the lower case.
7. Remove the interface board guide.
8. Remove the 2 CP (M3 × 8) screws securing the lower interface grounding plate to the parallel
interface on the C229 main board, then remove the lower interface grounding plate.
9. Remove the C229 main board.
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The edges of the shield plate are very sharp.
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Be sure to match the connectors to the correct cables by color – blue to blue, yellow to yellow, etc.
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The red wire on the cables for CN3, CN8 and CN9 must be in the Pin No. 1 position.
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After replacing the main board, perform the Default Setting and Bi-d Adjustments to write the new
settings to the EEPROM (see Chapter 4).
ESPON FX-880/FX-1180 Service Manual
WARNING
CAUTION
Disassembly and Assembly
3-11