Epson LQ-510 - Common Problems and Solutions Overview

REV.-A
TROUBLESHOOTING
Problem
Printer does
not operate
at all.
Table 5-5. SANPS(E) Power Board Unit Repair
Symptom Cause
Voltage on The +24V
the ±12V
power
line is dead. supply
circuit is
dead.
Fuse
resistor R31
or R32 is
open.
Transformer
coils are
open.
Checkpoint
Check the +24 V line.
Solution
Measure the resistance values of R31 and R32.
Replace
either R31
or R32.
Measure the resistances of transformer coils 7-8, 8-11.
Replace T1.
LQ-510
5-13