Brother HL-2400C - Page 280

VIII-34
Error Code
Concerned Part
F4
Check the connection of the heater fan connector.
Is DCN10 of IOD1 properly connected to the heater fan ?
Is DCN1 of IOD1 properly connected with 11CN of MCTL PCB ?
Is the voltage between DCN10-4 and 5 a rising edge ?
Is the voltage between DCN1-49 and 2 a rising edge ?
Is F4 error cleared ?
Is F4 error cleared ?
Connect them properly.
Replace the MCTL PCB.
MCTL
11CN
2
49
PGND
HTFANON-P
IOD1
DCN1
DCN10
HTFAN
YES
NO
NO
NO
YES
NO
12
49
HTFANON-P
PGND
HTFANERR
NO
Replace the heater fan.
Replace the IOD1 PCB.
YES
YES
NO
4
5
6
Heater Fan
Heater Fan (HTFAN)
Check the voltage (HTFANON-P)
Finished.
Finished.