Epson SQ-1170 Service Manual page 131

REV.-A
(1) Printer fails to operate at time of power on.
Check the outpui
volta e of the power
boar .
Replace the MAIN
board.
ND
Use the correct input
voltage.
Replace the fuse and
Yes
pull out CN4 on the
MAIN board.
No
No
Replace the printer
mechanism.
5-4
No
"Yes
power
Replace the
board.
ND