• Code: 72.02:09
• Description: Generic firmware Error
• Remedy: 1. Switch the power off from the back of the product and disconnect the power cord. Reconnect the power cord and power on the product. 2. Check that the product has the latest firmware version. If not, update the firmware to the latest version Appendix B: Emergency firmware upgrade with USB flash drive NOTE: If you see system error 79:04, see Appendix A: How to troubleshoot SE 79:04. NOTE: A firmware upgrade will not always solve the problem. The best way to solve this problem is to report the error to HP correctly. Make sure that you supply all the information accessed by pressing the Up and Cancel keys together while viewing the system error screen, or preferably provide the product log and diagnostic package to HP. Refer to Understand System Error Codes and Appendix C: Obtaining the product log and the diagnostics package.

• Code: 72.02:YZ
• Description: A service calibration should be performed.
• Remedy: To find out which service calibration to perform, print the calibration status. At the Touch Control Panel, select the Internal Prints icon, then Service information > Print calibration status. Perform whichever calibration is needed.

• Code: 74.08:04
• Description: Problem with the firmware upgrade process
• Remedy: 1. Reboot the Product 2. Try to upgrade the firmware again, for more information, see Appendix B: Emergency firmware upgrade with USB flash drive 3. Download again the firmware file from the source, as the original may be corrupted. 4. Replace the Touch Control Panel

• Code: 74.1:YZ
• Description: Error uploading paper profile update file
• Remedy: 1. Switch the power off from the back of the product and disconnect the power cord. Reconnect the power cord and power on the product. 2. Make sure the connection between the computer and the product is functioning properly. 3. Try to upload the paper profile update file again. 4. Make sure the version of the paper profile update file is compatible with the firmware version the product is using. You can check this on the same Web page where you downloaded the paper profile update.

• Code: 74:YZ
• Description: Error uploading firmware update file
• Remedy: 1. Switch the power off from the back of the product and disconnect the power cord. Reconnect the power cord and power on the product. 2. Make sure the connection between the computer and the product is functioning properly. 3. Try to update the firmware again.

• Code: 75.21:YZ
• Description: The spittoons (Left Spittoon, Service Station) have reached 80% capacity.
• Remedy: Use Preventive Maintenance Kit #2 to replace the Left Spittoon and Service Station.

• Code: 75.22:YZ
• Description: The spittoons (Left Spittoon, Service Station) are full.
• Remedy: Use Preventive Maintenance Kit #2 to replace the Left Spittoon and Service Station.

• Code: 76:YZ
• Description: Hard disk drive is full.
• Remedy: Remove any unnecessary files from the hard disk using the Embedded Web Server. If the problem persists, run the Hard Disk Recovery Utility (see Hard Disk Recovery Utility).