HP color laserjet 1600 series Service Manual

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Service mode functions (service only)
Cold reset
Cold-reset, which power-cycles the engine with a special button press, is not supported for this
printer. Instead, use the feature “Restore defaults” located in the Service menu to reset default
settings. For more information, see 
.
NVRAM initializer
NVRAM init will perform the following functions:
Resets all customer-accessible menu settings via control panel and software back to the factory
default settings
Resets the language to the value set at the factory
Resets the default media size to cold reset media size
Resets the symbol set to PC-8
Use the following procedure to execute an NVRAM-init.
1.
Turn off the printer.
2.
Press and hold the   (
Select
) and 
 (
Cancel Job
) buttons simultaneously.
3.
Turn on the printer.
4.
When you see the message Permanent storage init displays, release the   (
Select
) and 
(
Cancel Job
) buttons.
When the NVRAM init is complete, the printer will return to the Ready state.
Super NVRAM initializer
When a super NVRAM init is performed, the printer enters the Generic Product Mode, which
changes the language and country/region settings to “undefined.”
NOTE
Super NVRAM init will erase all data stored in the protected NVRAM settings.
Use the following procedure to execute a super NVRAM init.
1.
Turn off the printer.
2.
Press and hold the   (
Left arrow
) and   (
Right arrow
) buttons simultaneously.
3.
Turn on the printer.
4.
When you see the message Permanent storage init displays, release the   (
Left arrow
) and
 (
Right arrow
) buttons.
When the super NVRAM init is complete, the printer will return to the Ready state.
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Chapter 6   Troubleshooting
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