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DVH-3900MP/XZ/EW5
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No REAR line out signal?
OK
YES
Q308, F303, IC701(8)
YES
NO
Checked the line
out AMP Vdd?
YES
Q309, IC401(64)
NO
Checked the line out
AMP Vdd control?
IC701(4)
YES
NO
Checked the line
out AMP Ground?
YES
IC401(48), Q705, Q701, Q703
NO
Checked the line out
AMP mute contorl?
YES
IC701(1, 2, 3, 5, 6, 7)
NO
Checked the line out
AMP signal in/out?
2-A
Hearing the Pop noise with TUNER function?
(RDS Model)
YES
IC401(1, 2, 3, 6, 61), IC601(21, 22,23),
IC801(22), Q707, Q708, Q709, Q710
NO
Checked the
TU101(19), IC401(4)
NO
2-B
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TEL 13942296513 QQ 376315150 892498299