Circuit Board Removal; Roma Control Board Removal; Rops/Ropse Power Supply Board - Epson LQ-2550 Technical Manual

REV.-A

4.2.4 Circuit Board Removal

The circuit boards control the printer mechanism, and consist of the ROMA control board and the
Removal of the control panel, the case open sensor, the battery, and the cooling fan are also described
in this section.
Prior to disassembly of any of the main circuit components, be sure to first disconnect the
power cord and the interface cable.
4.2.4.1
Remove the upper case. (Refer to Section 4.2.2.)
Step 1:
Step 2: Remove the push tractor unit. (Refer to Section 4.2.3. 1.)
Step 3: Disconnect connector CN22 from the ROMA board, which connects the ROMA board to the
Disconnect fourteen connectors CN15, CN 14, CN 13, CN 12, CN 11, CN 10, CN9, CN 16, CN8, ' "
Step 4:
CN 19, CN20, CN 17, CN 18, and CN7 from the ROMA board, which connect the printer
mechanism to the ROMA board.
Remove the shield plate and the DIP switch cover.
Step 5:
Step 6: Remove the three CBB(M3X 12) screws and two CPS(0)(M3 X 8) screws securing the ROMA
board to the lower case, then remove the ROMA board.
CN
C N 1 4 —
12
DANGER
CBB
C N 1 9 CN20 C N 1 7
Figure 4-14. ROMA Board Removal
4-10
Shield Plate
CN 18
.-, ,
. .
. DIP Switch
Cover