Xerox 555 - Manual (Page 31)

Getting Started
WorkCentre Pro 555, 575 3-5
5.
Select the Time format:
To select 24 hour format, press .
To select 12 hour format, press .
6.
Using the Numeric Keypad and arrow keys, enter the time, (if
necessary, use the arrow key to set AM/PM), then press
Enter.
The menu selection screen redisplays. Press Exit or Stop to
return to the standby mode.
2.12 hour
Time format?
1.24 hour
or
Time
[10:30 pm]
Time
[22:30 pm]