Oki OKIFAX4550 Maintenance Manual page 260

Troubleshooting flow chart 14:
unit contacted with the contact
Check the thermister, the heater
MCNT board and Power Supply Unit.
41309401TH Rev.4
Poor fusing
Is the paper OKI
specified grade?
Yes
Is the (Bias)
spring normal?
(Tension: 2.5 kg)
Yes
Is the contact of the fuser
assembly prolerly?
Yes
(inside the fuser unit),
No
Use paper of OKI
specified grade.
No
Repair the pressure roller
spring.
Adujust the contact of the
No
fuser unit to contact the
contact assembly properly.
260 /