Removing The Circuit Boards - Epson LQ-870 Service Manual

3.2.3 Removing the Circuit Boards

Some printers contain a separate driver board and main board; others contain a single board that combines
the functions of the driver board and main logic board. Sections 3.2.3.1 and 3.2.3.2 describe how to
remove the CO60 DRV board and CO60 MAIN board. Section 3.2.3.3 describes how to remove the CO61
MAIN board (LQ-1170 only) or the CO60 MAIN B board (defined at the factory either for the LQ-870 or the
LQ-1170). Section 3.2.3.4 describes removal of the CO60 PSB board, and Section 3.2.3.5 describes
removal of the CO60 PNL board.
3.2.3.1 Removing the Driver
(This board is used with the CO60 MAIN board only. It is unnecessary with the CO61 or CO60 MAIN B
board.)
Remove the upper case, as described in Section 3.2.2.2.
1.
2. Disconnect the cables from connectors CN2 - CN12 on the driver board.
3. Remove the 4 stoppers attached to the main board; then remove the driver board.
Board
(CO60 DRV Board)
Stoppers
CO60 Oh Board
Figure 3-6. Removing the Driver Board
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