Brother HL-2600CN Service Manual page 307

Error Code
Developer Clutch 2 (DCLC)
Name of Part
Confirm the connection of Connector.
Is the connection proper between ECN16 of IOD2 and Clutch (DCLC) ?
Is the harness of Clutch (DCLC) broken ?
Check the voltage at DCLC ON-N.
+24V
Does the voltage drop ( ) between ECN16-3 and ECN2-6?
Does the voltage jump ( ) between ECN1-1 and ECN2-8 ?
Replace current MCTL PWB 2 with a new PWB.
Is D3 Error cleared ?
Complete
D3
YES
YES
NO
YES
NO
NO
YES
NO
Connect the harness.
Connect the connector properly.
Is D3 Error cleared ?
NO
Replace the clutch (DCLC) with a new clutch.
Replace IOD2 PWB 2 with a new IOD2 PWB 2.
Is D3 Error cleared ?
NO
Re-check
MCTL
12CN
DCL(C)ON-P
1
YES
Complete
YES
Complete
IOD2
ECN1 ECN16
Developer Clutch 2 (C)
+24V-1
1
1
DCLC
DCL(C)ON-P
3
ECN2
+24V-1 3
PGND
6
SGND
8