Pioneer AVIC-N2 Service Manual page 204

1
Check 4: Is the audio circuit operating normally?
Reproduce DVD-REF-A1 Title 2 Chapter (48V/16-bit/1 kHz/0dB). Verify the circuit described in Figure 2.
A
Checks are to be conducted using GNDAU1 (sensing pins) as a reference.
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 the resin flux cored solder, parts
and components, in the vicinity of the main components.
NO. Verification Verification
location 1
1 AOUT0
B
2 SRCK
3 LRCK
GND
C
Three serial output rated values
Checks are conducted with the measurement circuit below.
NO. Verification
location 1
4 LO
5 RO
D
Analog audio outputs (LO and RO) rated values
E
LO and RO output measurement circuit
F
204
1
2
location 2
IC1503 90pin
IC1605 1pin
IC1605 3pin
Rated value1
Rated value 2
Verification Rated value
location 2
CN1611 36pin 1100±150mV
CN1611 34pin 1100±150mV
Rated value
HOST I/F
LO
RO
22kΩ
These resistors are inserted.
AAGND
2
3
Rated Rated
value 1 value 2
2.0V 0.8V
and over and lower
2.0V 0.8V
and over and lower
2.0 V
0.8V
and over and lower
Reference
waveform
Waveform 4
Waveform 4
AVIC-N2/XU/UC
3
4
Reference
waveform
Waveform 3
Waveform 3
Waveform 3
4