Aiwa XD-DV290K Service Manual page 36

B. Audio abnormal
AUDIO ABNORMAL
Check Audio jack.
Check PLL FC of
MPEG part.
Refer to Audio part.
Refer to MPEG part.
Replace B/D.
END
D. Open/Close abnormal
Check the connection of MD.
YES
YES (If OK)
YES (If OK)
YES (If OK)
YES (If OK)
OPEN/CLOSE ABNORMAL
Check Front.
Check the
connection of
CON107.
NO
Check IC101
Pin #, $.
YES
Refer to SERVO part.
C. Video abnormal
VIDEO ABNORMAL
Check Video jack.
Refer to Video part.
Refer to Encoder part.
Refer to MPEG part.
YES (If OK)
NO
YES
50
YES (If OK)
YES (If OK)
YES (If OK)
YES (If OK)
Replace B/D.
END
Reconnect it.