
Preboot Menu
This section provides instructions on how to perform a Partial Clean using the printer’s control panel when an
error message displays on the control panel screen while rebooting.
The Partial Clean option removes all data except the rmware from the repository location where a backup
copy of the master rmware bundle is downloaded and saved. When selecting this option, it allows a disk to
be reformatted by removing the rmware image from the active directory without having to download new
rmware code and the printer is bootable.
Partial Clean is similar Disk Initialization and Partial NVRAM in legacy rmware.
WARNING! Do not select Format Disk. This option performs a disk initialization for the entire disk, cleans all
disk partitions, and removes all data. All custom settings, third-party solutions, rmware les, and the
operating system are completely lost. A delete conrmation prompt is not provided. The system is not
bootable after this action—a rmware download via an approved portable HDD must be performed to return
the system to a bootable state
Follow these steps to perform a Partial Clean on the printer’s control panel:
NOTE: Before performing a Partial Clean, make sure to back up the printer’s conguration data.
To restore the customer-dened settings, select the Backup/Restore option in the Device Maintenance menu.
1. Turn the printer O and then On.
Wait for the Ready and Attention LEDs to illuminate and then dim out.
2. On the printer’s control panel screen, touch the HP logo when 1/8 displays below the logo to open the
Preboot menu.
-or-
Turn the printer O and then On, and when the HP logo displays on the control panel and all three
Ready, Data, and Attention LEDs illuminate solid, press
-or-
For M4555 and CM4540, press the Stop button when the LED lights are illuminated.
3. Depending on your printer (Touchscreen or LCD control panel), perform one of the following tasks:
●
Use the touch screen scrollbar or touch the down arrow to select Administrator, and then touch
OK.
OR
●
Press 3 (up) or 9 (down) keys to highlight the Administrator menu, and then press 6 to open the
selected menu.
Figure 4-4 Preboot menu
24 Chapter 4 Device Resets ENWW
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