Brother HL-2600CN Service Manual page 309

Error Code
Name of Part Developer Solenoid (PSL KY)
Confirm the connection of Connector.
Is the connection proper between ECN5 of IOD2 and Solenoid (PSL KY) ?
Is the harness of Solenoid (PSL KY) broken ?
Check the voltage at (PSL KY) ON-N.
+24V
Does the voltage drop ( ) between ECN5-10 and ECN2-6?
Does the voltage jump ( ) between ECN1-5and ECN2-8 ?
Replace current MCTL PWB 2 with a new PWB.
Is D5 Error cleared
Complete
D5
YES
NO
NO
YES
NO
Connect the harness.
Connect the connector properly
Is D5 Error cleared ?
YES
Replace the front cover unit with a new unit.
YES
Replace IOD2 PWB 2 with a new IOD2 PWB 2.
Is D5 Error cleared ?
NO
Re-check
MCTC IOD2
12CN ECN1 ECN5
PSL(KY)ON-P
5
5
ECN2
+24V-1
3
PGND
6
SGND
8
YES
NO
YES
NO
+24V-1
9
PSL(KY)ON-N PSL KY
10
Complete
Complete