Sony PMC-DR45L - Block Diagram -Tuner Section

PMC-DR45L
6-3. BLOCK DIAGRAM — TUNER SECTION —
– 27 – – 28 –
TUNER BOARD
CONTROL BOARD (1/3)
MAIN
BOARD
(1/3)
• Signal path
: FM
: MW/LW
R-ch : same as L-ch.
1 5 8 6 7
ANT VT OSC OUT VCC IF OUT
1 18 16
13
15
9
21 19
23
87
11
9
12
19
18
17
2
3
4
5
14
21
13
20
FM
IF
IF AMP
Q1
TU1
TUNER UNIT
AM/FM
IF
BUFFER
FM
DET
DECODER
ANTI-BIRDIE
DET OUT
AM
Q3
LEVEL
DET
AM
RF AMP
MW/LW RF
BUFFER
Q6
AGC
AM
DET
12
7
8
9
10
11
13
1
27
28
29
30
31
2
31
5
4
3
2
1
30
8
22
3
CT2,L4
LW TRACKING
CT1,L3
MW TRACKING
MW
FREQUENCY
COVERAGE
L5
J1(1/2)
EXT ANT
J1(2/2)
MW/LW
6
5
12
7
8
9
10
11
13
7 10 12 11
11
14
13
15
52
24
2 4 6 24
AM
IF
AM
OSC
AM
MIX
TUNING
DRIVE
BUFFER
COMP
STEREO
SWITCH
PILOT
CANCEL
PILOT
DET
FF VCO P-DET
14
17
S-CURVE
1
FM/MW/LW FRONT END,IF DET,
FM STREO DEMODULATOR
IC1
FM ON
SWITCH
Q2
TU+7.5V
CF1 CF2
CF3
FM IF IN
FMDET
AFC
AM
RF IN
AM
MIX OUT
AM
IF IN
TU
LED
ST
LED
IF
OUT
ST
S/W
BAND
SW
OSC
OUT
AM
OSC
IN
REG
SD
B-MUTE
R-CONT
R-CLK
R-DATA
R-CE
SYSTEM
CONTROL
IC801(1/3)
SD CLK
B-MUTE
R-CLK
R-CNT/ST
R-DATA
R-CE
DET-OUT
SD CLK
B-MUTE
R-CLK
R-CONT
R-DATA
R-CE
MO/ST
IF IN
AM IN
BAND
BAND
XIN
CE
DI
CL
DO
XOUT
FM IN
LP OUT
LP IN
PD
MW
ST IND
DET-OUT
SD
DET-OUT
6
X1
75kHz
MW/LW
LOOP
ANTENNA
FM
DET OUT
AM
DET OUT
R CH
L CH
TU+7.5V
TU
+7.5V
T1
IFT COIL
TU
+7.5V
VCC
CT3CT1CT2
LW
SWITCH
Q9
MW/LW
SWITCH
Q4
LW
SWITCH
Q8
L5
AM OSC
L3
MW RF
L4
LW RF
MW
SWITCH
Q7
MW
SWITCH
Q5
VCC
TAPE
SECTION
2
POWER SECTION
CNP305
(1/2)
CNP307
(1/3)
CNP1
(2/2)
CNP801
(1/3)
PLL
IC2
CNP1
(1/2)
04
CT3
LW
FREQUENCY
COVERAGE
MPX IN
PLL IN
PILOT DET
L OUT
R OUT
CF4
SYSTEM CONTROL,
AM IF
(Page 31)
(Page 33)