2-41
Confidential
 Error code 6101
The new toner sensor detected that no toner cartridge was set.
<User Check>
• Set the toner cartridge correctly.
 Error code 6106
The new toner box sensor detected that no toner box was set.
<User Check>
• Set the toner box correctly.
 Error code 6200
Detected that the drum unit was not set by detecting the electrodes current.
<User Check>
• Set the drum unit correctly.
Step Cause Remedy
1 New toner sensor PCB failure Replace the new toner sensor PCB ASSY.
2
High-voltage power supply PCB 
failure
Replace the high-voltage power supply 
PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
New toner box actuator coming 
off or caught in some sections of 
the machine
Reattach the new toner box actuator.
2
New toner box sensor failure Replace the high-voltage power supply 
PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
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. 2-8 (P2-42) and Fig. 2-9 
(P2-42).)
2
Dirt on the high-voltage power 
supply PCB terminal
Clean the high-voltage power supply PCB 
terminal.
3
High-voltage power supply PCB 
failure
Replace the high-voltage power supply 
PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.