Brother HL-L3210CW - Page 83

2-64
Confidential
■ Error code 6300
The electrodes of the high-voltage power supply PCB detected that no waste toner box was
set.
<User Check>
• Re-insert the waste toner box in the correct position.
■ Error code 6400
The registration mark sensor detected that no belt unit was set.
<User Check>
• Re-insert the belt unit.
■ Error code 6801
The internal temperature sensor detected a temperature higher than the specified value.
<User Check>
• Lower the room temperature.
• Keep the machine away from heating appliances.
• Check that the fan is not clogged.
Step Cause Remedy
1
Dirt on the electrodes of the
waste toner box and those of the
machine
Clean the electrodes of the waste toner
box and those of the machine.
(Refer to Fig. 2-6 (P2-63).)
2
High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB.
3 Main PCB failure Replace the main PCB.
Step Cause Remedy
1
Connection failure of the
registration mark sensor L
harness
Reconnect the registration mark sensor L
harness.
2
Registration mark sensor L PCB
failure
Replace the registration mark sensor L
PCB.
3 Main PCB failure Replace the main PCB.
Step Cause Remedy
1
Connection failure of the internal
temperature sensor harness
Reconnect the internal temperature
sensor harness.
2 Main PCB failure Replace the main PCB.