Block Diagram - Tuner Section - Sony HCD-GRX7 Service Manual

HCD-GRX7/GRX7J/R700/RX77/RX77S
7-2. BLOCK DIAGRAM – TUNER Section (East European, CIS models only) –
ST +10V
Q5
B+ SWITCH
FM CIRCUIT B+
TM1
5
ANTENNA
+B
FM 75
8 ANT IN
COAXIAL FE1
FM FRONT-END
4
AM
Q13
MW
SWITCH
10 17 9
05
CF3
CF1
10.7MHz 10.7MHz
FM IF AMP
IF OUT 1 1
Q1 – 4
FE2
MW/LW FRONT-END
6 12 28
5 13
Q9
LW SWITCH
14
3 15
16
2
17 29
26 25 24 23 22 21 20
27
Q14
LW SWITCH
Q12 Q11
MW MW
SWITCH SWITCH
RV42
FM TUNED
LEVEL
11
FM/AM PLL
IC21
– 23 –
FM-IN FM DET-OUT 23
CT1701, L1701, TP1701
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
IC41
REG
AM
AM IF AM
AM-MIX 2 4 24
DET
IFT41 IF
OUT
SUB CARRIER
AM-OSC
AM-SD
12
ADJ
RV41
STEREO
AM TUNED
STEREO 7
LEVEL
TUNED
AM-RF IN TUNED 6
AM
10 9 FM DET
SD
X42 X41
450kHz 10.7MHz
30 14 15 13
D41
MUTE
D42 D43
X21
4.5MHz
1
14 7 2 12 8 24 13
ST-CE
CE 3
ST-DOUT
4
DI
ST-CLK
CL
5
ST-DIN
DO
6
• SIGNAL PATH
: FM
: AM (MW/LW)
MPX LPF41 AMP AMP
22 OUT L 21 19
IN L.P.F. IN L OUT L
OUT R 20
POLAR /PILOT SWITCH
IC1702
POLAR DECODER
IC1701
SUB CARRIER
PEAK
12
14
IN L OUT 7 13
2
5
4 R-CH
R OUT 6 3
3 SUB IN
C A
TP1701
9 11
20 SUB IN
RV1701
VCO STOP 9
ST IND 10
LEVEL
18
17
D1701 D1702
RV1702
SWITCHING SWITCHING
TP1702
Q1702 Q1703
TP1702, RV1702
VCO
D1704
STEREO, TUNED, MUTE,
ST-CE, ST-DOUT, ST-CLK, ST-DIN
– 24 –
ST-L
I
17
(Page 29)
SWITCHING
Q1701
D1703
J
(Page 29)