Pioneer AVH-P2300DVD Service Manual page 47

5
QQ
3 7 63 1515 0
Check 10: Is the audio circuit OK?
<Outline> The serial 3 lines digital output + DACCLK, output from DVD-LSI (IC1501), are converted to analog audio
signal at Audio-DAC (IC1801) and are output from the HOST I/F (CN1901).
Simultaneously, the analog MUTE signal is also output from DVD-LSI (IC1501) via the HOST I/F.
The digital audio signal (IECOUT), output from DVD-LSI (IC1501).
IC1501
DVD-LSI
<Check method> Playback DVD-REF-A1 TITLE 2 CHAPTER 1 (48 k/16 bit 1 kHz 0 dB),
NO. Check point 1 (stylus)
1 ADOUT3
2 SRCK
3 LRCK
TE
L 13942296513
Specification
value 1
GND
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IECOUT
IC1801
L R C K
Audio-DAC
ADOUT
S R C K
Fig 10.1: Audio circuit
and check with DGND being the reference.
In case of NG, check the applicable line, periphery of major components as described in the above drawing,
soldering of the peripheral components and defective components.
Specification value 1
VCC33 V-0.6 V or higher
VCC33 V-0.6 V or higher
VCC33 V-0.6 V or higher
Specification
value 2
Fig 10.2: Serial 3 lines specification value
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y
i
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Specification value 2
0.4 V or lower
0.4 V or lower
0.4 V or lower
Q Q
3 6 7 1 3
u163
.
AVH-P2300DVD/XNUC
7
2 9 9 4 2 8
CN1901
HOST I/F
L O
R O
GNDAU
Reference waveform
Waveform 1
Waveform 2
Waveform 3
1 5 0 5 8 2 9 9 4
m
co
7
8
9 9
A
B
C
2 8 9 9
D
E
F
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