From the manual:
1 Press SRC and hold until the unit turns
2 Press MULTI-CONTROL and hold until
the initial setting menu appears in the display.
3 Use MULTI-CONTROL to select Clock.
4 Push MULTI-CONTROL left or right to
select the segment of the clock display you
wish to set.
Pushing MULTI-CONTROL left or right will select
one segment of the clock display:
As you select segments of the clock display,
the selected segment blinks.
4 Push MULTI-CONTROL up or down to
put a clock right.
You can match the clock to a time signal by
! If 00 to 29, the minutes are rounded down.
(e.g., 10:18 becomes 10:00.)
! If 30 to 59, the minutes are rounded