Sony mvc-cd250 Operating Instructions Manual page 18

The POWER lamp (green) lights up and the
CLOCK SET screen appears on the LCD screen.
Select from [Y/MD] (year/monthfday),
[MD/Y] (month/day/year) or [D/MB]
(day/month/year).
e If the rechargeable button battery, which
provides the power for saving the time data, is
ever fully discharged (page 1191, the CLOCK
SET screen will appear again. When this
happens, reset the date and t&e. by starting
fxxn step
above.