Removing The C186 Main Board Assembly - Epson 2070 - LQ B/W Dot-matrix Printer Service Manual

Disassembly and Assembly

3.2.10 Removing the C186 MAIN Board Assembly

1. Remove the rear/front edge guide assembly, front cover, paper eject assembly, rear/front tractor
unit, and printer cover (see Section 3.2.1)
2. Remove the panel board (see Section 3.2.2) and upper housing assembly (see Section 3.2.7).
3. Disconnect the following connectors from the C186 MAIN board assembly.
CN3 (10-pin , blue)
CN6 (2-pin, white)
CN9 (15-pin, white FFC)
CN12 (2-pin, white)
CN16 (2-pin, yellow)
Disconnect the cables for CN10 and CN11 after releasing the connector lock.
Disconnect the cable for CN3 by pushing down the connector lock.
Remove the 2 CBS screws ( 3 × 12, F/Zn) securing the upper connector cover.
4.
Remove 5 CBB screws (3 × 12, F/Zn) and 1 CBC lamitite screw (3 × 8, F/Zn ) securing the C186
5.
MAIN board assembly to the lower housing assembly.
6. Remove the option I/F cage from the C186 MAIN board by releasing the hooks fixing it to the
C186 MAIN board.
Figure 3-35 Removing the C186 Main Board Assembly
7. Remove the C186 MAIN board assembly.
Notice the location of the CBC lamitite screw (3 × 8, F/Zn). Refer to the above figure.
Lock CN10 and CN11 by pushing down each connector's lock after inserting the connector cable.
The tightening torque for the CBB (3 × 12, F/Zn) screw =
The tightening torque for CBB (3 × 8, F/Zn) screw =
If you replace the main board, adjust the bidirectional print alignment and run the default setting
program. Refer to Chapter 4.
3-24
CN4 (3-pin, white)
CN7 (4-pin, white FFC)
CN10 (4-pin, blue)
CN13 (2-pin, black)
Assembly Notes
LQ-2070 Service Manual
CN5 (3-pin, black)
CN8 (17-pin, white FFC)
CN11 (5-pin, blue)
CN15 (22-pin FFC)
C186 MAIN Board Assembly
0.78 ~ 0.98 Nm (8 ~ 10 Kg f - cm)
0.78 ~ 0.98 Nm (8 ~ 10 Kg f - cm)
Rev.A