Pioneer AVIC-N2, Service Manual

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AVIC-N2/XU/UC
204
1 2 3 4
1 2 3 4
C
D
F
A
B
E
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.
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 Rated Rated Reference
location 1 location 2 value 1 value 2 waveform
1 AOUT0 IC1503 90pin 2.0V 0.8V Waveform 3
and over and lower
2 SRCK IC1605 1pin 2.0V 0.8V Waveform 3
and over and lower
3 LRCK IC1605 3pin 2.0V 0.8V Waveform 3
and over and lower
Rated value1
Rated value 2 GND
Three serial output rated values
Checks are conducted with the measurement circuit below.
NO. Verification Verification Rated value Reference
location 1 location 2 waveform
4 LO CN1611 36pin 1100
±
150mV Waveform 4
5 RO CN1611 34pin 1100
±
150mV Waveform 4
Analog audio outputs (LO and RO) rated values
LO and RO output measurement circuit
Rated value
22k
Ω
AAGND
HOST I/F
RO
LO
These resistors are inserted.