Epson FX-870 Service Manual page 62

START
Measure the VP
I (+35 V) at oin 10 I
of CM2 on the
board assembly.
Measure the VL
of CM2 on the
output
vo I tage
E p s o n FX-870/1170
Chart 1. Printer Dead at Power On
Use correct AC
fluctuation from
NO
AC range shown
I
No
1
No
A
pin 10 and pin 1.
No
Yes
END
v o l t a g e . (No
a t l e f t i s
permitted.
board.
does the new
board assembly.
Disconnect CM14
and check the
power supply
voltages out of
board assembly.
END
Troubleshooting
3-9