Epson SQ-1170 Service Manual page 140

REV.-A
5.4 REPAIR OF MAIN BOARD
This section describes the problems related to the MAIN board. The table below provides various
symptoms, likely causes, and checkpoints. The checkpoints refer to waveforms, resistance, and other
values to be checked to evaluate the operation of each component. Check these values and take the
appropriate action.
Table 5-6. Repair of Main Board
5-13