Brother HL-2400C - Page 265

VIII-19
Error Code
Name of Part
Developer Clutch (DCLK)
D4
Is the connection between ECN13 of IOD2 and Clutch (DCLK) OK ?
Is the harness of Clutch (DCLK) broken ?
Check the voltage at DCLK ON-N.
Is D4 Error cleared ?
Connect the connector properly.
YES
NO
NO
Replace current MCTL PCB with a new one.
Is D4 Error cleared ?
Replace IOD2 PCB with a new one.
Replace the clutch (DCLK) with a new clutch.
Is D4 Error cleared ?
YES
YES
NO
YES
YES
NO
NO
Connect the harness.
NO
YES
+24V
MCTL
12CN
4
DCL(Y)ON-P
IOD2
ECN1
ECN13
1
3
ECN2
5
8
12
PGND
SGND
+24V-1
4
Does the voltage drop(
Does the voltage jump(
)between ECN13-3 and ECN2-8?
)between ECN1-4 and ECN2-12 ?
+24V-1
DCL(Y)ON-P
DCLY
Check the Connector.
Finished
Finished
Finished
Re-check from beginning of section.