Oki OKIFAX 5400 Maintenance Manual page 228

Troubleshooting flow chart 5:
40838301TH Rev.1
Fuser unit thermal error
** PRINTER ALARM 4 **
Turn on power again.
Is the PRINTER
ALARM 4 message
displayed with a delay?
Yes
About 60 seconds later
Turn on power again.
Is the fuser unit heater
off?
Yes
Is the heater free from
wire breakage?
Yes
See ACTION 10.
7 - 38
No
See ACTION 9.
See ACTION 6.
No
See ACTION 9.
No
See ACTION 11.