Phaser 6128MFP Service Manual 3-59
Error Messages and Codes
Low Density Yellow Cartridge Error
The ADC Sensor detects an insufficient amount of Yellow toner being applied. The
following troubleshooting procedure applies to these errors.
Applicable Error
• Low Density Yellow Cartridge
Initial Actions
• Check that the cartridge is a genuine Xerox Toner Cartridge. If not, replace
with a genuine Xerox cartridge.
• Check the Toner Cartridge life cycle count. If at or near end of life, replace the
cartridge.
• Remove, inspect, and gently shake the the cartridge from side to side.
• Check for sealing tape on the Imaging Unit.
• Cycle system power.
• If problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Imaging Unit, PL4.1.21
■ Dispense Assembly, PL5.1.1
■ Transfer Belt, PL6.1.7
■ Toner Cartridge PL5.1.24
■ MCU Board, PL10.7.7
“Map 1 - MCU Board” on page 10-6
“Toner Dispense” on page 10-20
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Check the Yellow toner motor.
Caution: Do not run the toner motor
more than a few seconds..
Printer Diag > IOT Diag > Digital
Output DO-24
Does the motor rotate?
Go to step 2. Go to step 3.
2 Check the Dispense Assembly gears.
Is the Yellow cartridge gear
damaged?
Replace the
Dispense
Assembly
(page 8-91).
Go to step 6.