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5
QQ
3 7 63 1515 0
Check 4: Is the audio circuit operating normally?
Reproduce DVD-REF-A1(GGV1018) Title 2 Chapter (48k/16-bit/1 kHz/0dB).
This check is the same for all DVD-V compatible modules.
Checks are to be conducted using GNDAU1 (sensing pins) as a reference.
If the result is not satisfactory, check to see if there are any problems with the resin flux cored solder, parts and compo-
nents, in the vicinity of the main components (the section marked 4 in the circuit diagram circuit diagram).
NO.
Verification Rated
location
1
IC1601 pin-3 2.2V
2
IC1601 pin-2 2.2V
4
IC1601 pin-4 2.2V
GND
Three serial output rated values
Checks are conducted with the measurement circuit below.
NO.
Verification
location 1
4
LO
5
RO
TE
L 13942296513
Analog audio outputs (LO and RO) rated values
Q1602.3
Peripheral
muting
circuit
LO and RO output measurement circuit
NO.
Verification
location 1
6
IEC958
www
.
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6
value 1
Rated value1
Rated value 2
Verification
Rated value
location 2
CN1701 15pin
1120±150mV
CN1702 12pin
1120±150mV
Rated value
HOST I/F
LO
RO
22k
These resistors are inserted.
AAGND
Verification
Rated value 1
location 2
CN1702 1pin
2.2V and over
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2 9
8
Rated
Reference
value 2
waveform
0 .8V
Waveform 3
and over
and lower
0 .8V
Waveform 3
and over
and lower
0 .8V
Waveform 3
and over
and lower
Reference
waveform
Waveform 4
Q Q
Waveform 4
3
6 7
1 3
1 5
Rated value 2
Reference
waveform
0.8V and lower
Waveform 5
co
.
DVH-P7000R
7
9 4
2 8
0 5
8
2 9
9 4
2 8
m
7
8
9 9
A
B
9 9
C
D
115
8
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