Pioneer AVH-P5700DVD Service Manual page 126

1
Check 3 : Is the audio circuit operating normally?
Reproduce DVD-REF-A1 Title 2 Chapter (48k/16-bit 1 kHz/0dB).
Checks are to be conducted using GNDAU1 (sensing pins) as a reference.
A
If the locations, listed under "verification location 2", can be verified, there is no need to conduct verifications for
the locations listed under "verification location 1."
If the result is not satisfactory, check to see if there are any problems with resin flux cored solder and other
defects in the applicable line, vicinity of major parts stated in the above diagram (Circuit Diagram
peripheral components.
Verification location 1
No.
(Sensing pin)
AOUT0
1
SRCK
2
LRCK
3
B
Rated value 1
GND
C
Checks are conducted with the measurement circuit below.
Verification location 1
No.
(Sensing pin)
LO
4
5 RO
D
Analog audio outputs (LO and RO) rated values
E
Verification location 1
No.
(Sensing pin)
IEC958
6
F
126
1
2
Verification
Rated value 1
location 2
IC1851 2pin 2.0V and over
IC1851 1pin 2.0V and over
IC1851 3pin
2.0V and over
Rated value 2
Three serial output rated values
Verification
location 2
CN1901 37pin
CN1901 35pin
Rated value is effective value (rms)
LO
RO
22k
GNDAU
Verification location 2
CN1551 1pin
AVH-P5700DVD/EW
2
3
Rated value 2
0.8V and lower
0.8V and lower
0.8V and lower
Reference
Rated value (rms)
waveform
1100 150mV Waveform 2
1100 150mV Waveform 2
HOST I/F
These resistors are inserted.
LO and RO output measurement circuit
Rated value 1
VCC33V - 0.6V and over
3
4
) and
2
Reference
waveform
Waveform 1
Waveform 1
Waveform 1
Rated value 2 Reference waveform
0.4Vand lower Waveform 3
4