Yellow ATC Sensor Failure,Code12
Magenta ATC Sensor Failure,Code13
Cyan ATC Sensor Failure,Code14
The ATC Sensor detects an insufficient amount of developer.
Note
If this failure reoccurs three times successively, an Engine NVRAM value is set preventing further printer use until the Clear Tech Rep Fault (see pg.6-20) is performed.
Troubleshooting Procedure
Step
Actions and Questions
Yes
No
1
Is the problem toner and/or developer empty.
Replace the toner or developer.
Go to step 2.
2
Is the ATC sensor clean and free of dust, toner or any other contaminates?
Go to step3.
Clean the ATC sensor.
3
1.Check the ATC sensor wiring harness Yellow=P/J129
Magenta=P/J130 Cyan=P/J131
2.Is the wiring harness or the sensor defective?
Replace the ATC Sensor and/or wiring harness.
Go to step 4.
4
1.Remove the Rear Cover and RearShield.
2.Measure the voltage at...Yellow=P405B3 Magenta=P405B8 Cyan=P405A10
on the engine control board.
3.Is the voltage between+1 and
+3VDC?
Replace the engine control board.
Go to step 5.
5
1.Measure the voltage at...Yellow=P405B14 Magenta=P405B11 Cyan=P405A11
on the engine control board.
2.Is the voltage+5VDC?
Replace the engine control board.
Go to step 6.
6
1.Measure the voltage at...Yellow=P405B2 Magenta=P405B9 Cyan=P405A9
on the engine control board.
2.Is the voltage 0VDC?
Replace the engine control board.
Go to step7.
7
1.Remove the Imaging Unit Plate cover.
2.Inspect the wiring harness between the engine control board and the developer housing assembly.
3.Is the wiring harness defective?
Replace the wiring harness.
Replace the ATC Sensor.
8
Run approximately 10 pages of the solid fill full-page prints for this color to ensure the error is cleared.
The Yellow ATC Sensor detects a low TC (toner concentration).
Initial Action
- Check that Toner/Developer is present.
- Check the Yellow ATC Sensor for contamination. Ensure that the sensor is seated correctly.
NOTE:
To clear this fault, enter Component Control and set the value of NVM location 752-109 to 0.
This can be caused by many things. I've seen broken Drum contacts from improper drum installation causing Developer bead carryover. Toner dispense motor assy's failing. Developer Housing failure. DVHVPS failure.
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Clear Tech Rep Faults
The following printer faults can occur during normal operation, and the normal
procedure is to isolate and repair the problem. However, with these particular faults,
an additional step is required. A value has been written in the engine NVRAM that
requires clearing before the printer can be used. Some faults require three occurrences
before the fault is generated.
Note
To clear a Tech Rep Fault, you must disconnect the Finisher option. The
following functions generate a Tech Rep Fault:
1. From the Main Menu, highlight Troubleshooting and press OK.
2. Highlight Service Tools and press OK.
3. Press the Up and Down Arrow buttons simultaneously to enter the Hidden
Service menu.
4. Highlight Run Service Diagnostics and press OK to enter Service Diagnostics.
5. Highlight NVRAM Access and press OK.
6. Highlight Clear Tech Rep Faults and press OK.
7. Highlight the Link Code(s) to be reset and press OK.
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