Brother HL-2400C Service Manual page 285

Error Code
Cleaning Brush Solenoid
Concerned Part
Check the connection of the cleaning brush solenoid connector.
YES
Is ECN10 of IOD2 properly connected to the solenoid ?
Is ECN2 of IOD2 properly connected with DCN9 of IOD1 ?
Is ECN1 of IOD1 properly connected with 11CN of MCTL PCB ?
Check the voltage (FBSLON-N/P).
Is the voltage between ECN10-4 and 8 of IOD2 a trailing edge ?
Is the voltage between ECN2-2 and 12 of IOD2 a rising edge ?
Is the voltage between ECN1-33 and 1 of IOD1 a rising edge ?
Is E6 error cleared ?
YES
Finished.
E6
NO
YES
YES
YES
YES
NO
Connect them properly.
Is E6 error cleared ?
NO
Replace the transfer solenoid.
Replace the IOD2 PCB.
Replace the IOD1 PCB.
NO
Replace the MCTL PCB.
MCTL
11CN
SGND
1
FBSLON-P
33
YES
Finished.
IOD1 IOD2
DCN1 DCN9 ECN2
FBSLON-P
ECN10
2
2
1
PGND
8 8
1
33
SGND FBSLON-N
12
12
4
Drum Cleaner
Solenoid
+24V-1
FBSL