[Cm][Yk] Toner Supply Failure - Xerox Phaser 7400 Service Manual

[CM][YK] Toner Supply Failure

The Low Toner Sensor indicates a supply failure at the indicated Imaging Unit.
Applicable Status Codes:
Code 941:
Toner supply failure with Cyan or Magenta Toner.
Code 942:
Toner supply failure with Yellow or Black Toner.
Initial Actions:
Cycle the printer's power.
If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
Toner Cartridges, PL1.1.24
Imaging Unit, PL1.1.23
Toner Motors, PL5.1.22
Imaging Unit Sensor Board, PL5.1.21
Troubleshooting Procedure Table
Step Actions and Questions
1 Check the following for evidence of fault or
damage:
Toner Cartridge
Imaging Unit Agitator Bar
Low Toner Sensors
Is there any damage, debris or blockage?
2 Test the affected Toner Motor.
1. Remove the CM or YK Toner Cartridges.
2. Run the appropriate Service Diagnostics
Toner Supply Motor test.
Does the motor rotate?
3 Does the plunger that engages the
Agitation Bar move in and out while the
Toner Motor rotates?
4 Test the affected Low Toner Sensors.
1. Remove the CM or YK Imaging Units.
2. Run the appropriate Service Diagnostics
Toner Cart Sensor test.
Do the sensors function correctly?
3-176
Wiring and Plug/Jack References
Print Engine Map 5 (page 10-8)
Print Engine Map 8 (page 10-11)
Print Engine Motor Driver Board (2/6) (page 10-32)
Print Engine Imaging Unit Sensor Board (page 10-41)
Yes
Replace any
damaged parts.
Go to Step 3.
Go to Step 4.
Replace the Engine
Control Board
(page 8-112)
Phaser 7400 Color Printer Service Manual
No
Go to Step 2.
Replace the motor
(page 8-104). If the
error persists,
replace the Motor
Driver Board
(page 8-141).
Replace the Toner
Supply Camshafts
(page 8-144).
Replace the
Imaging Unit
Sensor Board
(page 8-142).