2-29
Confidential
Cartridge sensor detected that the incompatible toner 
cartridge was installed.
2200 2-37
Toner cartridge is not recognized by the cartridge sensor. 2400 2-37
Toner cartridge could not communicate with the cartridge 
sensor.
2500 2-37
The new toner sensor of the toner cartridge could not 
detect a new cartridge properly.
4F01 2-39
New process sensor could not detect the new drum unit 
correctly.
4F05 2-39
New toner box sensor could not detect the new toner box 
correctly.
5E00 2-39
The new toner sensor detected that no toner cartridge was 
set.
6101 2-41
An error occurred in the ROM check sum. E000 2-51
Program error E100 2-51
An error occurred during access to the DRAM in the main 
PCB ASSY.
E500 2-51
Read error in the flash ROM E702 2-51
The side thermistor detected a temperature higher than the 
specified value.
6801 2-43
LED Type of problem
Error 
codes
Refer 
to: