p1566 resetter

Cold reset
A cold reset sets most, but not all, default variables stored in NVRAM back to factory default
values. It typically does not reset the page count, paper tray sizes, localization language, or
formatter number.


To perform a cold reset
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.
4 After the Go, Attention, and Ready lights turn on, continue holding the GO button for
approximately five seconds, but not longer than fifteen seconds. During this process, the
Attention light will turn off.
5 Release the GO button.
Note If either the Go or Ready light turned off or no lights turned off before the GO button was released,
then repeat steps 1 through 5.
6 The printer lightss begin cycling from front to back. The cold-reset process runs until the
printer is in the Ready state.


NVRAM initializer


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 an NVRAM initialization


1 Turn the printer off.
2 Press and hold the GO button.
3 Turn the printer on and continue to hold the GO button.
4 After the Go, Ready, and Attention lights turn on, continue holding for at least 20 seconds.
During this process, the Attention, Ready, and Go lights will each turn off.
5 Release the GO button.
6 The device lights will begin cycling from front to back. The NVRAM-initialization process runs
until the printer is in the Ready state.
Note This process is similar to a continuous self-test. For more information, see “Performing a
continuous self-test“ .
After the initialization is complete, you can use PJL commands (see “Using PJL commands” ) to restore some of your printer settings