HP LaserJet M72630 MFP

Symptom

The toner cartridge is installed, but the Not Installed message displays on the control panel.

Causes

• Toner cartridge is not installed properly.
• CRUM harness of the toner cartridge is defective.
• CRUM PBA or CRUM Chip is defective
• CRUM connection (Modular connector) is defective.
• CRUM Joint PBA is defective.
• Bad connection between the main board and the CRUM Joint PBA

Troubleshooting

1. Toner cartridge install problems
   • Check if the toner cartridge is installed properly.
   • If the cartridge comes out automatically from the printer, check the cartridge fixing hook.
   • If the cartridge fixing hook is defective, replace the cartridge cap or cartridge.
2. CRUM harness problems
   • Verify that the CRUM harness is connected properly.
   • Check to see if the modular jack on the toner cartridge is broken or assembled incorrectly.
   • If the modular jack is defective, replace it with a new one.
   • If the modular jack is stuck in the toner cartridge, pull it out.
3. CRUM PBA problems or CRUM data broken
   • Replace the toner cartridge.
4. CRUM connection (Modular connector) installation problems
   a. Open the front cover and remove the toner cartridge.
   b. Check to make sure the CRUM connection (Modular connector) is installed properly.
   c. If the modular connector is not installed properly, open the rear cover and reinstall it.
5. CRUM Joint PBA problem
   • Check the connectors on the CRUM joint PBA. If any connectors are damaged, replace the board.
6. Bad connection between the main board and the CRUM Joint PBA
   • Check the connection between the main board and the CRUM Joint PBA. If the connection is bad, replace and test the following components in this order: harness, CRUM joint board PBA, and the main board.