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Diagnostic Tests and Utilities
HP Designjet 4000/4020 Printer Series Service Manual
Service Utilities
The following is a list of all internal Service Utilities available in the Printers.
Instructions for entering the Service Utilities menu are given on Page 4-57.
1 Turn Drive Roller ⇒ Page 4-59
The purpose of this Service Utility is to rotate the Drive Roller and the
Overdrive in order to clean them.
2 Prime Tubes ⇒ Page 4-61
The purpose of this Service Utility is to Prime the Tubes when the Ink Tubes
are NOT new and they need to be re-primed or automatic priming was not
completed correctly.
3 Set SN ⇒ Page 4-65
The purpose of this Service Utility is to set the Serial Number of the Printer.
4 Reset Life Counters ⇒ Page 4-66
The purpose of this Service Utility is to reset the internal life counters. There
are two submenus that allow you to:
Reset ALL the counters related to a Preventive Maintenance Kit (PMK).
Reset only the counters related to a specific replaced part.
5 Diagnostic Print ⇒ Page 4-68
The purpose of this Service Utility is to print the Diagnostic Print in order to
identify image quality problems.
6 Sleep Mode ⇒ Page 4-69
The purpose of this Service Utility is to enable/disable the sleep mode so
that the Printer is never switched Off automatically if not used for a certain
period of time (one hour by default).
7 Replace Cutter ⇒ Page 4-70
The purpose of this Service Utility is to move the Carriage to a position
where the Cutter can be replaced easily.
8 Set RTC Clock ⇒ Page 4-71
The purpose of this Service Utility is to set the Real Time Clock (RTC) of the
Printer.
9 PHC Maintenance ⇒ Page 4-72
The purpose of this Service Utility is to reset the black printhead cleaner
once it has been replaced
10 Media standby behavior ⇒ Page 4-74
This is where you can change the position the media is put when in the
standby position.
11 Backup Print Mode ⇒ Page 4-76
The Backup Print mode is a mode that increases the number of passes to
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