HP LaserJet Enterprise M604

The Partial Clean option erases all partitions and data on the disk drive, except for the firmware repository where a backup copy of the firmware file is stored. This allows the disk drive to be reformatted without having to download a firmware upgrade file to return the product to a bootable state.

Characteristics of a Partial Clean

• Customer-defined settings, third-party solutions, firmware files, and the operating system are deleted.
• Rebooting the product restores the firmware files from the Repository location, but does not restore any customer-defined settings. 
• For previous HP products, a Hard Disk Initialization is similar to executing the Partial Clean function for this product.

CAUTION:
HP recommends backing-up product configuration data before executing a Partial Clean to retain customer-defined settings (if needed). See the Backup/Restore item in the Device Maintenance menu.

Reasons for performing Partial Clean

• The product continually boots up in an error state.
  NOTE: Try clearing the error prior to executing a Partial Clean.
• The product will not respond to commands from the control panel.
• Executing the Partial Clean function is helpful for troubleshooting hard disk problems.
• To reset the product by deleting all solutions and customer-defined settings.
• The product default settings are not properly working.

Execute a Partial Clean from a touchscreen control panel

1. Touch the HP logo in the middle of the control-panel display when you see the 1/8 under the logo.
   
2. Use the down arrow ▼ button to highlight the +3:Administrator item, and then touch the OK button.
3. Use the down arrow ▼ button to highlight Partial Clean and then touch the OK button.
4. Touch the OK button again.
5. Touch the Home button to highlight Continue, and then touch the OK button.
   NOTE: The product initializes.

Execute a Partial Clean from a LCD control panel

CAUTION:
This procedure resets all product configurations and settings to factory defaults (customer configurations and settings are lost)

1. Press the Cancel ✖ button when you see the 1/8 under the logo.
2. Use the down arrow ▼ button to highlight the +3:Administrator item, and then press the OK button.
3. Use the down arrow ▼ button to highlight Partial Clean and then press the OK button.
4. Press the OK button again.
5. Press the Home button to highlight Continue, and then press the OK button.
   NOTE: The product initializes.