3-58 Phaser 6128MFP Service Manual
Error Messages and Codes
Toner Cartridge Errors
The Toner Cartridge is near or has reached its end of life. The following 
troubleshooting procedure applies to these errors.
Applicable Errors
• C,M,Y,K Low
• Waste Full C,M,Y,K
• Replace C,M,Y,K Cartridge
Initial Actions
• Check that the Toner Cartridge is properly installed.
• Cycle printer power.
• If problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Toner Cartridge PL5.1.21~24
■ MCU Board, PL10.7.7
“Toner Dispense” on page 10-20
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Replace the Toner Cartridge 
(page 8-13).
Does the error persist?
Replace the 
MCU Board 
(page 8-57).
Complete.