Brother MFC-7450

1-21
Confidential
■ Error code BB
White level data error
* This error is indicated on the LCD in the maintenance mode.
■ Error code E6
NVRAM error on main PCB
■ Error code EC
Fan performance malfunction
■ Error code F8
Battery connection failure
Scanner Error
Step Cause Remedy
1 FB unit failure Replace the FB unit.
2 Main PCB failure Replace the main PCB ASSY.
Init Unable E6
See Troubleshooting and routine maintenance chapter in User’s Guide.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Print Unable EC
See Troubleshooting and routine maintenance chapter in User’s Guide.
Step Cause Remedy
1
Harness connection failure of fan
motor
Check the harness connection of the fan
motor, and reconnect it.
2 Fan motor failure Replace the fan motor.
3 Main PCB failure Replace the main PCB ASSY.
Machine Error F8
Step Cause Remedy
1 Battery harness connection failure Reconnect the battery harness.
2 Battery exhausted Replace the battery.
3 Main PCB failure Replace the main PCB ASSY.