Specifications

Chapter 6: FRU Replacement and Fault Isolation Procedures
6-19
6.2.8 Toner (EP) Cartridge Is Not in Place: Fault code J3
The Toner (EP) Cartridge is not in place.
NOTES:
1. Without the diagnostic tool, skip the Diagnostic Tool (DG) portion of step 2 go to Section
6.3.12
CRU Switch Failure before replacing the MCU.
2. The control panel message may be: Need Cartridge
3. This FIP may also be used to fix a bad CRU Switch or toner (EP) Cartridge.
4. If a tab is broken on the cartridge or the cartridge has been forced into wrong position, try
another cartridge.
INITIAL ANALYSIS
Inspect the following components. Are they compatible with your printer version, correctly
installed, not damaged, deformed, or contaminated?
CRU Sensor PWB MCU PWB
LVPS Assembly EP Cartridge
CRU Sensor Assembly HVPS Harness Assembly
Yes No
Go to Step 2. Replace the problem components.
2. CRU SWITCH ANALYSIS
Use Diagnostic Tool test DG02 to check the CRU Switch.
Does the CRU Switch function correctly and increment the DG02 number each time you
actuate it?
Yes No
Replace the MCU PWB. Go to Section 6.3.12 CRU Switch Failure.