Pioneer AVH-P6300BT/XNUC Service Manual page 52

1
Check 10: Audio circuit OK?
A
<Outline>The serial three-wire digital output +DACCLK that is output from DVD-LSI (IC1501) is converted
to the analog audio signal using Audio-DAC (IC1801), and the converted signal is output from
HOST I/F (CN1901).
Simultaneously, the analog MUTE signal is output through HOST I/F from DVD-LSI (IC1501).
The digital audio signal (IECOUT) output from DVD-LSI (IC1501) is output through CN1901.
IC1501
DVD-LSI
B
C
<How to check>
Play back DVD-REF-A1 TITLE2 CHAPTER1 (48k/16bit 1kHz 0dB).
Checking should be based on DGND.
If NG is found, check the relevant lines, periphery of main components described above,
soldering of peripheral components and defective components.
NO. Spot to check 1 (sending pin) Rated value 1
1 ADOUT
2 SRCK
3 LRCK
D
Rated value 1
GND
E
F
52
1
2
LRCK IC1801
Audio-DAC
ADOUT
SRCK
IECOUT
Fig. 10.1: Audio circuit
VCC33V-0.6V or more 0.4V or less
VCC33V-0.6V or more 0.4V or less
VCC33V-0.6V or more 0.4V or less
Rated value 2
Fig. 10.2: Rated value of serial three wires
AVH-P6300BT/XNUC
2
3
LO
RO
GNDAU
Rated value 2 Reference waveform
Waveform 1
Waveform 2
Waveform 3
3
4
CN1901
HOST I/F
4