Brother HL-2600CN Service Manual page 324

Error Code
Concerned Part High Voltage Unit (HVU)
Confirm the status of a charger unit.
Is the charger unit properly installed ?
Is a corona wire cut or shorted ?
Confirm the connection of high voltage wiring.
Is there any contract failure of the high voltage (CHV) output terminal ?
Is there any contract failure or short of CHV socket part ?
Replace the high voltage (HVU)
Is F5 error cleared ?
Job is complete.
F5
YES
NO
NO
NO
YES
NO
Re-install the charger unit.
YES
Replace the charger unit or belt cartridge.
Is F5 error cleared ?
NO
YES
Have the electric pole properly contact.
YES
Clean the socket part.
Is F5 error cleared ?
NO
NO
Replace the IOD1 or MCTL PWB 2.
IOD1
MCTL
DCN17
11CN
CHV ON
1
10 10 7
8
YES
YES
HVU
BCN1
CHV
+24V-1 Charger Unit
1
HV
CHV ON-N
7
CHVERR
8
Job is complete.
Job is complete.