Pioneer AVH-P3100DVD Service Manual page 51

5
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
IECOUT
DVD-LSI
L R C
ADOUT
S R C
Fig 10.1: Audio circuit
<Check method> Playback DVD-REF-A1 TITLE 2 CHAPTER 1 (48 k/16 bit 1 kHz 0 dB),
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.
NO. Check point 1 (stylus)
1 ADOUT3
2 SRCK
3 LRCK
Specification
value 2
Specification
value 1
GND
Fig 10.2: Serial 3 lines specification value
5
6
K IC1801
Audio-DAC
K
Specification value 1
VCC33 V-0.6 V or higher
VCC33 V-0.6 V or higher
VCC33 V-0.6 V or higher
AVH-P3100DVD/XN/UC
6
7
L O
R O
GNDAU
Specification value 2
Reference waveform
0.4 V or lower Waveform 1
0.4 V or lower Waveform 2
0.4 V or lower Waveform 3
7
8
CN1901
HOST I/F
8
A
B
C
D
E
F
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