Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures

6-24

6.2.12 Toner (EP) Cartridge is Low on Toner: Fault code

The Toner (EP) Cartridge is low on toner.

NOTES:

1. Without the diagnostic tool, skip the Diagnostic Tool test (DG) portion of steps 1 and 3 and

go to the toner sensor assembly failure procedure in Section 4.3.18, before replacing the

MCU.

2. The control panel message may be: Toner Low.

3. This FIP may also fix a bad sensor or toner cartridge.

4. If the toner sensor is disconnected (P/J 21), it cannot recognize that toner is low.

1. Toner (EP) CARTRIDGE ANALYSIS

Replace the Toner (EP) Cartridge. Print at least 10 pages.

Does the J5 Code still appear?

Yes No

Go to Step 2 Problem solved.

2. INITIAL ANALYSIS

Inspect the following components. Are they compatible with your printer version, correctly

installed, not damaged, deformed, or contaminated?

MCU PWB LVPS Assembly

EP Cartridge Toner Sensor Assembly

Yes No

Go to Step 3. Replace the problem components.

3. TONER SENSOR ANALYSIS

1. Disconnect P/J 111 on the HVPS.

2. Disconnect P/J 15 on the MCU PWB.

3. Use Diagnostic Tool test DG02 to check the Toner Sensor.

4. Open the Front Transport Assembly and actuate the interlock switch.

5. Remove and reinstall the Toner (EP) Cartridge.

Does the Toner Actuator function correctly and increment the DG02 number each time

you actuate it?

Yes No

Replace the MCU PWB. Go to Section 6.3.18

Toner Sensor Assembly Failure.