Oki OKIFAX 5400 Maintenance Manual page 239

Troubleshooting flow chart 15:
Is the contact of the fuser
unit contacted with the contact
Check the thermister, the heater
MCNT board and Power Supply Unit.
40838301TH Rev.1
Poor fusing
Is the paper OKI
specified grade?
Yes
Is the pressure roller
spring normal?
Yes
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.
7 - 49