Demodulator Schematic Diagram[Hr-Dvs3U/Sr-Vs30U] - JVC SR-VS30U Service Manual

4.12 DEMODULATOR SCHEMATIC DIAGRAM [HR-DVS3U/SR-VS30U]
5
1 4 DEMOD
4
TO MAIN
CN1501
I2C DATA
I2C CLK
TU MUTE(H)
DEMOD(R)
3
DEMOD(L)
9V
GND
COMP
2
1
4 4 4 4 4 4 4
A
C1518 C1517 C1516
IC1501
1 /50 10 /50 10 /50
UPC1852AGT
MATRIX
off-set
Absorption
off-set
Absorption
ST VCO
Mode
SAP VCO
Selector
Filter
L+R
De Em PC
LPF
ST VCO
Sub
det 1/2
1Œ 4"ú
ST
VCO
Pilot
1/2
DET
C1502
0.1 /50
C1501 C1504
22 /16 4.7 /50
R1517
C1521
3.3k
10 /50
B C
R1506 R1507 C1512 C1511
33k 33k 1 /50 1 /50
T T
C1513
C1515 C1514 3.3 R1505 R1504 C1510 R1515 R1514
1 /50 10 /16 /16 5.1k 3k 1 /50 0 0
GND
off-set
Absorption
IIL
WideBand Timing Spectral
RMS Current RMS
2.1K
LPF
VCA Wide
Band Spectral
filter filter
V.E.
filter
adjust
fh
trap
400LPF
ST/SAP
LPF
SW
Filter
ST
SAP
LPF
BPF.
Phase Loop SAP
1/2
det filter VCO
off-set
Absorption
SAP SAP SAP VCO
det LPF
Phase ATT Noise Noise
DET BPF det
GND
C1503 R1502
1 /50 330k
MY
C1509
0.1 /50
C1505 C1506
R1501
2.2 0.1 R1503
1k
/50 /50 120k
C1507 C1508
0.047 0.47 /50
D E
4-25 4-26
Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only.
When replacing the parts , refer to the Parts List.
Q1501
R1508
DTC114T
3.9k
R1509 C1519
1.2k 0.056
R1511 C1520
1.2k 0.056
Q1502
DTC114T
R1510
3.9k
F
pu97596_rev0
G H