nasolul
Joined: 16 Jun 2003
Posts: 15
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 19 Jun 2003 8:41 Reseting HP |
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Service mode functions
NVRAM initialization/cold reset
NVRAM initializer sets all default variables stored in NVRAM back to
factory default values or to a default ROM value, depending on the
variable. It also performs a system reset.
NVRAM initializer resets the following:
! all menu settings to factory default values
! factory settings such as formatter number, page counts, factory
paper settings
To perform NVRAM initialization
1 Turn the printer off.
2 Press and hold down the GO button.
3 Turn the printer on and continue to hold the GO button for at least
20 seconds. During this process, the GO button, Attention, and
Ready LEDs will each turn on.
4 Release the GO button.
5 The printer LEDs will begin cycling. The NVRAM-unit process will
run until the printer is in the ready state.
PJL software commands
To set the following NVRAM variables:
Factory printer DEFAULT PAPER and copier/scanner factory default
paper size will be set to the same value automatically.
Factory printer DEFAULT LPARM:PCL SYMSET
Factory DEFAULT OEM bit
Factory DEFAULT PRINTPAGECOUNT
Factory DEFAULT SCANPAGECOUNT
Factory DEFAULT COPYPAGECOUNT
Default Quick Copy paper size is also stored in scanner NVRAM but
is changed only through the software or when set back to factory
default with a NVRAMINIT. Only Quick Copy image type and contrast
have a default value stored in NVRAM; they can only be changed
through the software or by NVRAMINIT, which returns them to a
ROM default value.
From HP12xx Service manual, p156.
Regards
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