Dell 2355DN Service Manual page 94

Poor Fusing Grade
NO
After printing
completed, any error
related fuser?
YES
Both ends
NO
of thermostat
open?
YES
Replace thermostat
and re-test
Replace the control
component on Main
PBA
Check any contact
problem in thermistor
and repair
Service Manual
Alignment and Troubleshooting
The machine
NO
placed under the
the voltage of pin 60
severe low tempera
of U36 (CPU) on Main
ture for a long
time?
YES
Place the machine
at normal
temperature and
re-test
printing, is the fuser NIP
The paper used is too
thick or contains too
much cotton in it
-> Re-test with the
recommended paper
4-54
While printing,
NO
Thermistor's
contact is OK?
PBA is 2.1V
- 2.6V?
YES
Open the top
Check if the hardness of
cover. When black NO
P/R, and spring force is OK?
(hardness: 24 degree,
width is 3.0-
spring's force: 3 Kg)
3.5mm?
YES
NO
YES
Re-assemble
thermistor