DVH-3900MP/XZ/EW5
36
1
2
3
4
1
2
4
C
D
F
A
B
E
DVD/CD no sound?
IC1301
(172, 173, 174,175)
YES
NO
Checked the
MPEG Audio DATA
out?
IC1401(4, 5, 6, 9, 10)
See Figure 25
YES
NO
Checked
the DAC Vcc,
Vdd, GND?
IC1401(1, 2, 3, 7, 8, 16)
See Figure 26, 27
YES
NO
Checked
the DAC signal
In/out?
IC1301(178),
IC1401(11, 12)
See Figure 28
YES
NO
Checked the
DAC mute?
IC1402(4, 8)
See Figure 29
YES
NO
Checked the
OP AMP Vdd,
GND?
IC1402(1, 2, 6, 7)
See Figure 29
YES
NO
Checked the
OP AMP signal
in/out?
See a sound error
correction process.
YES
NO
Checked the
E-VR & Power
6-D
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TEL 13942296513 QQ 376315150 892498299
