Sony Betacam SX DNW-A100 Maintenance Manual page 166

4-2. TAPE Maintenance Mode (M0)
4-2-3. RF CHECK Mode (C1)
To execute the check
(1) Insert the cassette tape recorded by a Betacam SX
format.
m
. The tape amount on the recorded portion that is
played back after a cassette tape is inserted must
exceed the check execution time.
The check execution time for each channel is usually
about ten seconds and about 80 seconds in an ALL
check.
. Usually, use alignment tape SR5-1 (for a 525/60
system) or SR5-1P (for a 625/50 system).
(2) Turn the search dial and move the * mark to the
channel to be checked or ALL.
. Usually, select ALL.
(3) Press the SET button.
. The tape is automatically played back in the PLAY
mode. The check is then initiated.
. Message "Auto Tracking ..." or "Auto Checking ..."
is displayed on the superimpose picture.
During ALL check execution, the check result in the
channel is displayed every time a one-channel check
is completed.
The time data display area displays an ordinary time
counter.
. To cancel the check, press the MENU button.
m
. Message "Insert SR5-1" is displayed on the superim-
pose picture when no cassette tape is inserted. The
tape is automatically played back in the PLAY mode
when a cassette tape is inserted. The check is then
initiated.
. If message "Auto Check (Push SET)" is continuous-
ly displayed on the superimpose picture, the non-
recorded portion on the tape is judged to be played
back from the beginning. Change the playback
position on the tape.
. Check cannot be properly performed in modes other
than PLAY mode. Leave the check as it is until
automatic check is completed. If modes other than
PLAY mode are entered, the check cannot be
performed any longer or the condition becomes
"RED".
4-32
(4) Confirm the check result on the superimpose picture.
. If no abnormality is found, "GRN" is displayed on
the right of the selected channel or ALL.
. Refer to the "For Check Failure" on page 4-35 when
message "Auto Check Failure" is displayed on the
superimpose picture.
. Refer to the "For Condition NG" on page 4-34 when
message "Condition NG" is displayed on the
superimpose picture or when conditions other than
"GRN" are displayed on the right of the checked
channel.
m
. Refer to the "For Check Failure" on page 4-35 when
the check result in all channels is "RED" even if
message "Condition NG" is displayed on the
superimpose picture during ALL check execution.
. "GRN", "YEL", or "RED" is displayed in a time
data display area. In only the time data display area,
it cannot be confirmed whether the condition is NG
or check failure when it is "RED".
The check result for each channel is displayed when
the search dial is turned after performing ALL
check.
(5) Press the MENU button when terminating the menu.
To execute the check again in this menu, return to step
(2).
n
To change the playback tape before starting the check,
press the SET button while pressing the EJECT button.
The tape is then ejected without influencing the check
result. Insert another tape and press the PLAY button.
The check is then initiated. This operation does not
coincide with the message on the superimpose picture.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P