Brother HL-2400C Service Manual page 275

Error Code
Fuser Clutch(FUCL)
Concerned Part
Check the connection of the fuser clutch connector.
Is ECN9 of IOD2 properly connected with a connector of the clutch ?
Is ECN1 of IOD2 properly connected with 11CN of MCTL PCB ?
Check the voltage (FUCLON-N/P).
Is the voltage between ECN9-3 and ECN2-8 of IOD2 a trailing edge ?
Is the voltage between ECN1-20 and ECN2-12 of IOD2 a rising edge ?
Is E8 error cleared ?
YES
Finished.
E8
NO
YES
YES
NO
YES
NO
NO
Connect them properly.
Is E8 error cleared ?
NO
Replace the cleaner clutch(FUCL).
Replace the IOD2 PCB.
Replace the MCTL PCB.
IOD2
MCTL
ECN1 ECN9
12CN
20 FUCLON-P
20
ECN2
+24V-1
5
PGND
8
SGND
12
YES
Finished.
Fuser Clutch
+24V-1
1
FUCL
FUCLON-N
3