Circuit Board Removal; Pegx Board Removal - Epson LQ 1050 - B/W Dot-matrix Printer Technical Manual

4.2.4 Circuit Board Removal

This printer includes two circuit boards: the PEGX controller circuit board and PEBFIL-11 filter circuit
board.
Electricity leaks when you put the PEGX board on the electric-conductor materials. The lithium battery
on the PEGX board always supply DC voltage to the static-RAM.
4.2.4.1
Remove the upper case (Refer to Section 4.2. 1.).
Step 1:
Remove the push tractor unit (Refer to Section 4.2.3.).
Step 2:
Disconnect connector CN3 which connects the power transformer.
Step 3:
Step 4: Disconnect connectors CN4, CN5, CN6, CN7, CN8, CN9, and CN 10, which connect the printer
mechanism.
CAUTION
Figure 4-10. Connectors Removal
4-9
'Lithium Battery
10
REV.-A