Brother HL-L3210CW - Page 115

2-96
Confidential
■ Poor fixing
■ Completely blank
<User Check>
• Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
• Clean the corona wire of the drum unit.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
• Replace the belt unit with a new one.
Step Cause Remedy
1
Dirt on the electrodes of the
drum unit and those of the
machine
Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-6 (P2-
63) and Fig. 2-7 (P2-63).)
2
Dirt on the electrodes of the
belt unit and those of the
machine
Clean the electrodes of the belt unit and
those of the machine. (Refer to Fig. 2-6 (P2-
63) and Fig. 2-11 (P2-94).)
3 Fuser unit failure Replace the fuser unit.
4
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB.
5
Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB.
6 Main PCB failure Replace the main PCB.
<User Check>
• Clean the corona wire of the drum unit.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.
• Install the latest main firmware.
Step Cause Remedy
1
Dirt on the electrodes of the
drum unit and those of the
machine
Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-6 (P2-
63) and Fig. 2-7 (P2-63).)
2
Dirt on the electrodes of the
belt unit and those of the
machine
Clean the electrodes of the belt unit and
those of the machine. (Refer to Fig. 2-6 (P2-
63) and Fig. 2-11 (P2-94).)
3
Connection failure of the LED
control flat cable
Reconnect the LED control flat cable.
4 LED control flat cable failure Replace the LED control flat cable.
5
Dirt on the electrodes of the
high-voltage power supply
PCB and those of the
machine
Clean the electrodes of the high-voltage
power supply PCB and those of the machine.
6 Main PCB failure Replace the main PCB.