Aiwa xc-rw700 Service Manual page 75

TROUBLESHOOTING - 12/26
QQ
3 7 63 1515 0
Sled operating is abnormal.
Is there
Sled control signal output?
(IC701 pin 85)
YES
Is there
Sled drive voltage input?
(IC501 pin 23)
YES
Is there
Sled drive voltage output?
(IC501 pin 17, 18)
YES
Is there
HALL/SLDOUT signal input?
(IC701 pin82)
TE
L 13942296513
YES
Is there
SLED FG signal input?
(IC701 pin97)
YES
OK
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NO
Check the connection of IC701
pin 85
Check the connection of IC502
NO
pin 17.
Replace the IC502(BA5925FA)
NO
Is Act_Mute signal "L"?
Replace the IC501(BA5983FM)
Is there HALL 1
NO
signal input (IC508 pin3)
NO
Check the IC502(BA5925FA)
Check the Connector(CN501)
Replace the SLED Motor.
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2 9
8
(IC501 Pin9)
YES
Q Q
3 6 7 1 3 1 5
NO
co
.
-75-
9 4 2 8
NO
Replace the IC701(MICOM)
NO
Check the connection of IC701
pin 26.
YES
Replace the IC508(BU4053BCFV)
0 5 8 2 9 9 4
m
9 9
2 8 9 9