Brother HL-2700CN Service Manual page 312

Error Code
Part Name
Reset the power supply switch.
Is the error message still on despite of
above reset ?
Confirm the harness between MCTL(DPCN),
LVPS(ACN4) and Controller Board DU (CN100,
CN101).
Is the harness and connector connected
properly.
Replace the Controller Board DU.
No
Is the code P1(P2) cleared ?
Completed
Engine Controller
Board PU
MCTL
DPCN
LVPS
ACN4
P1, P2
Controller Board DU
Yes
Yes
Duplex Connector
P1
4
P2
3
P3
2
P4
1
VIII-55
No
Temporary error.
Possible to continue the drive.
Connect the harness and
No
connector properly.
Controller Board DU
Cable
CN100
CN101
+24V-2
4
PGND
3
+24V-2
2
PGND
1