Brother INTELLIFAX 600 - Manual (Page 55)

SYSTEM SETUP
SET
After entering the fourth digit of the time, press the SET key.
The display will revert to l.DATE/TIME.
1 . D A T E / T I M E
If you want to change another system setting, press a number
key, otherwise press the STOP key to exit.
Note;
- In the event of power failure, the clock will continue to
operate from a re-chargeable internal battery for about 1
hour. After this the date and time will be lost and must be
re-entered.
- All other settings in the USER OPTIONS and SETUP
SYSTEM functions are stored in non-volatile memory, and
will be retained indefinitely in the event of power failure.
6-3