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LaserJet 4100N 49.4C02 error message
Often times this error appears after a new firmware DIMM has been installed. It is clearable by performing an NVRAM initialization. On this model printer, perform the following procedure:
To initialize NVRAM:
1 Print a configuration page and a menu map.
2 Turn off the printer.
3 Remove all formatter accessories (EIO cards, hard drive, DIMMs, etc.).
4 While turning on the printer, hold down SELECT and CANCEL JOB until all of the lights on the
control panel are lit.
5 Press CANCEL JOB, and then SELECT. The NVRAM INIT message appears on the control panel
display.
6 After initializing the NVRAM, use service mode to reenter the settings from the configuration page.