Xerox Phaser 8400 Service Manual page 214

Electronics Troubleshooting Guide
HCF Thermal Power cycle printer
does safety fuse
not blown
functio
n
HCF faulty Turn off printer and wait 30 seconds for
power supply capacitors to discharge
Replace HCF
Perform full test of printer
Printer Nonspecific Double check PS and PE indicators for
is on electronics any error code information
(Electro failure
nics
Module
LEDs
are
illumina
ted) but
the
printer
can
NOT
print
pages
and the
Control
Panel
appear
s
frozen
and no
error
messa
ges are
display
ed
General Troubleshooting
The safety fuse is a
self resetting device -
power cycling
ensures the fuse
cools enough to
reset itself
* Possible solution to
problem *
Damage to circuits
within the Electronics
Module may occur if
the power supply
capacitors are not
allowed to fully
discharge
The printer self test
is usually able to
detect a failure that
would cause this
symptom. Looking
up the error code
may save debugging
time.
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