Brother DPC-8060 Service Manual page 346

(8) Fuser unit failure
Possible cause Step
Poor 1
thermistor
harness
contact
2
Thermistor 3
assembling
failure
Halogen 4
heater lamp
failure
Heater harness 5
connection
failure
NOTE:
• This problem will be cleared if leaving the machine power ON for ten minutes.
• If the heater is cooled down sufficiently, this problem may be cleared by turning on the machine
power switch while pressing the Go button. Be warned, however, that this operation will melt
the fuser unit if the heater is hot.
(9) Main PCB failure
Possible cause Step
Main PCB 1
Software bug 2
Check
Is the contact of connector
CN1 and CN2 on the relay
rear PCB good?
Is the contact of connector
CN3 on the main PCB
good?
Is the thermistor installed
properly?
Remove the fuser unit and
measure the resistance of
the halogen heater lamp. Is
it open circuit?
Is the heater harness
connector connected to the
low-voltage power supply
PCB and fuser unit secure?
Check
Is it possible to print the
test page with the method
of 8.4.5 'Test Pattern 1' in
chapter 8?
Does this problem appear
when printing specific data
or printing under a specific
environment?
9-24
Result Remedy
No Reconnect the connector.
No Reconnect the connector.
Yes Replace the fuser unit.
No Reinstall the thermistor
properly.
Yes Replace the halogen heater
lamp.
No Reconnect the connectors
securely.
Result Remedy
No Replace the main PCB.
Yes Inform the Brother office of the
used specific data, machine
condition and system
environment.
Confidential