24
DVD-1920/756
FLOW CHART NO.23
Audio is not outputted. (JK7101)
Set the disc (with 5.1ch Audio) on the disc tray, and playback.
Are the analog audio signals outputted to each pin
of CN7102 on 5.1ch Amp CBA.
CN7102 15PIN FRONT(L)
CN7102 13PIN FRONT(R)
CN7102 11PIN SURROUND(L)
CN7102 9PIN SURROUND(R)
CN7102 7PIN CENTER
CN7102 5PIN SUBWOOFER
IC7301 2, 6PIN FRONT(L/R)
IC7401 2, 6PIN SURROUND(L/R)
IC7501 2, 6PIN CENTER/SUBWOOFER
Replace the DVD Main CBA or DVD Mechanism.
Replace
ICs (
IC7301, IC7401 or IC7501
)
.
Check each line between each pin of CN7102
and each pin of IC7301,IC7401 and IC7501
and service it if defective.
CN7102 15,13PIN → IC7301 2,6PIN FRONT(L/R)
CN7102 11,9PIN → IC7401 2,6PIN SURROUND(L/R)
CN7102 7,5PIN → IC7501 2,6PIN CENTER/SUBWOOFER
Are the analog audio signals inputted to each pin
of IC7301, IC7401 and IC7501.
Are the analog audio signals outputted to each pin
of IC7301, IC7401 and IC7501.
IC7301 1,7PIN FRONT(L/R)
IC7401 1,7PIN SURROUND(L/R)
IC7501 1,7PIN CENTER/SUBWOOFER
Ye s
Ye s
No
No
No
Check each line and service it if defective.
No
Replace the DVD Main CBA Unit.
No
Ye s
Do the mute signals of CN7102 on 5.1ch Amp
CBA become to "H" level?
FRONT(L) → CN7102 14PIN
FRONT(R) → CN7102 12PIN
SURROUND(L) → CN7102 10PIN
SURROUND(R) → CN7102 8PIN
CENTER → CN7102 6PIN
SUBWOOFER → CN7102 4PIN
Ye s
Is the analog audio signal of each line outputted to
each terminal of JK7101 (as shown below) ?
IC7301 1PIN → JK7101 FRONT(L)
IC7301 7PIN → JK7101 FRONT(R)
IC7401 1PIN → JK7101 SURROUND(L)
IC7401 7PIN → JK7101 SURROUND(R)
IC7501 1PIN → JK7101 CENTER
IC7501 7PIN → JK7101 SUBWOOFER
w
w
w
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1
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4
2
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1
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2
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0
5
1
5
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3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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