Pioneer AVH-P6500DVD UC Service Manual page 141

5
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
location 1 location 2
1 AOUT0 IC1503 90pin
2 SRCK IC1605 1pin
3 LRCK IC1605 3pin
Rated value1
GND
Three serial output rated values
Checks are conducted with the measurement circuit below.
NO. Verification Verification
location 1 location 2
4 LO CN1611 36pin
5 RO CN1611 34pin
Analog audio outputs (LO and RO) rated values
LO
RO
22kΩ
AAGND
LO and RO output measurement circuit
NO. Verification Verification
location 1 location 2
6 IECOUT CN1501 1pin
5
6
Rated
value 1
2.0V
and over
2.0V
and over
2.0 V
and over
Rated value 2
Rated value
1100±150mV
1100±150mV
Rated value
HOST I/F
These resistors are inserted.
Rated value 1
2.2V and over
6
Rated Reference
value 2 waveform
0.8V Waveform 3
and lower
0.8V Waveform 3
and lower
0.8V Waveform 3
and lower
Reference
waveform
Waveform 4
Waveform 4
Rated value 2 Reference
waveform
0.8V and lower Waveform 5
AVH-P6500DVD/UC
7
7
8
A
B
C
D
E
F
141
8