Epson FX-870

Troubleshooting
Chart 1. Printer Dead at Power On
0
START
NO
I
Use correct AC
voltage. (No
fluctuation from
AC range shown
at left is
permitted.
No
No
No
Dower on,
does the new
I (+35 V) at oin 10 I
Measure the VP
(+35 V) at pin 10
of CM2 on the
C076 PSR
board assembly.
1
“;e;c;dhe
board assembly.
I
board.
Measure the VL
(+5 VI at pin 1
of CM2 on the
C076 PSR
No
A
*
Is the
output No
vo I tage
Q
norma I 1
Yes
Disconnect CM14
and check the
power supply
voltages out of
circuit at
pin 10 and pin 1.
board assembly.
END
v
END
v
Epson FX-870/1170
3-9