Sony DNW-A220 Maintenance Manual page 109

To execute the check
(1) Insert the lignment tape SR5-1 (for a 525/60 system) or SR5-1P (for a 625/50 system).
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. The tape amount on the recorded portion that is played back after a cassette tape is inserted must
exceed the check execution time. Before check, record a data on blank tape for two minutes or
more. The recorded data is rewritten to new data in this menu execution.
The check execution time for each channel is usually about ten seconds and about 80 seconds in an
ALL check.
(2) Turn the JOG dial and move the * mark to the channel to be checked or ALL.
. Usually, select ALL.
(3) Push the SET button.
. The tape is automatically recorded back in the REC mode. The check is then initiated.
. Message "Auto Tracking ..." or "Auto Checking ..." is displayed on the LCD monitor.
During ALL check execution, the check result in the channel is displayed every time a one-
channel check is completed.
The sub LCD displays an ordinary time counter.
. To cancel the check, push the MENU button.
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. Message "Insert Check Tape" is displayed on the LCD monitor 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 continuously displayed on the LCD monitor, the non-
recorded portion on the tape is judged to be recorded from the beginning. Change the record
position on the tape.
. Check cannot be properly performed in modes other than REC mode. Leave the check as it is until
automatic check is completed. If modes other than REC mode are entered, the check cannot be
performed any longer or the condition becomes "RED".
(4) Confirm the check result on the LCD monitor.
. 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 3-37 when message "Auto Check Failure" is displayed
on the LCD monitor.
. Refer to the "For Condition NG" on page 3-36 when message "Condition NG" is displayed on the
LCD monitor or when conditions other than "GRN" are displayed on the right of the checked
channel.
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. Refer to the "For Check Failure" on page 3-37 when the check result in all channels is "RED"
even if message "Condition NG" is displayed on the LCD monitor during ALL check execution.
. "GRN", "YEL", or "RED" is displayed in a sub LCD. In only the sub LCD, it cannot be con-
firmed whether the condition is NG or check failure when it is "RED".
The check result for each channel is displayed when the JOG dial is turned after performing ALL
check.
(5) Push the MENU button when terminating the menu.
To execute the check again in this menu, return to step (2).
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To change the playback tape, push the SET button while pressing the EJECT button. The tape is then
ejected without influencing the check result. Insert another tape and push the PLAY button. The check is
then initiated. This operation does not coincide with the message on the LCD monitor.
DNW-A220
DNW-A220P
3-2. TAPE Maintenance Mode (M0)
3-2-3. RF CHECK Mode (C1)
3-33