Xerox 4400DT - Phaser B/W Laser Printer Service Manual page 26

Front Panel Shortcuts
Mode
Skip execution of POST diagnostics
Print Service Menu Map
Reset PostScript NVRAM
Enter Service Diagnostics
Phaser 4400 Laser Printer Service Manual
Press this selection at power-on
OK
INFO
BACK+OK
When "Password" appears, press UP +
DOWN keys within 2 seconds
BACK+INFO
1-9