Brother HL-2600CN Service Manual page 320

Error Code
Concerned Part
Confirm the connection of a erase lamp connector.
Is DCN7 of IOD1 properly connected with a connector of the erase lamp ?
Is DCN1 of IOD1 properly connected with 11CN of MCTL PWB 2?
Check the voltage (ELON-N/P)
Is a single voltage between DCN7-11 and DCN2-25 to be a trailing edge ?
Is a single voltage between DCN1-27 and 44 of IOD2 to be a rising edge ?
Is EL error cleared ?
Job is complete.
EL
Erase Lamp (EL)
YES
NO
NO
YES
NO
Connect them properly.
Is EL error cleared ?
NO
YES
Replace the LED PCB.
YES
Replace the IOD1 PWB 2.
NO
Replace the MCTL PWB 2.
IOD1
MCTL
11CN DCN1 DCN7
PGND
10
44
44
ELON-P
11
27
27
DCN2
+24V-1
17
PGND
25
YES
Job is complete.
Relay Connector
Erase Lamp
+24V-1
1
+24V-1
1
ELON-N
2
ELON-N EL
2
9