Oki OKIOFFICE84 Maintenance Manual page 220

Troubleshooting flow chart 4:
40672201TH Rev. 4
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 8.
7 - 32
No
See ACTION 7.
See ACTION 6.
No
See ACTION 7.
No
See ACTION 9.