Brother DCP-9040CN Service Manual page 44

Error code 8E
Registration
Registration failed. Press start and try again.
Auto color registration failure when implementing it from the control panel
Error code 8F
Registration
Registration failed. See Troubleshooting chapter in User's Guide.
Sensor sensitivity adjustment failure when implementing auto color registration from the control
panel
Error code 9D
Registration
Registration failed. See Troubleshooting chapter in User's Guide.
Incorrect sensor measurement value when implementing auto color registration from the control
panel
User Check
- Check if there is a scratch, dirt or the like on the belt unit. If there is, replace the belt unit with
a new one.
Step
1 Invisible damage on belt unit
2 Harness connection failure of
registration-mark sensor PCB
ASSY
3 Registration-mark sensor
PCB failure
4 Transfer HVPS PCB unit
failure
5 Engine PCB failure
Cause
Check the registration mark sensor performance
following the procedure described in
mode
Check the harness connection of the registration-
mark sensor PCB ASSY and reconnect it.
Replace the registration-mark sensor PCB ASSY.
Replace the transfer HVPS PCB unit.
Replace the engine PCB ASSY.
1-25
Remedy
75". If any problem occurs, replace the belt unit.
"Maintenance
Confidential