Block Diagram - Tuner Section - Sony ICF-CD863V Service Manual

ICF-CD863V
5-2.
TV(7-13CH)/WEATHER
FERRITE-ROD
BLOCK DIAGRAM – TUNER Section –
CT3, L3
L3
D4
TV/WEATHER
CT3
TRACKING
RF
ANT1
(FM/TV)
BPF
BPF1
CT2, L2
L2
FM/TV(2-6CH)
FM/TV CT2
TRACKING
RF
D3
L5
AM
D2
ANTENNA CT1
(1/2)
CT1, L5
AM TRACKING
VT
DI, CLK, CE
(Page 15) B
TVRO TV/FM/AM RF AMP,
20
MIX, OSC, DET, MPX
IC1
TVIN
TV
24
RF AMP
150kHz
FMIN FM FM/TV FM
+ +
25 PSN
RF AMP LPF LMT
FMRO
22
45kHz
AM AGC
BPF AMP
AM/FM: 1/2
TV: 1/8
ARFI
AM
26
RF AMP
TV/FM
AM
REGULATOR
OSC
OSC
16 18 19
D5
D2 (2/2)
L1
AM OSC
L4
AM VCO FM/TV
VOLTAGE OSC
OSC BUFFER
FM/AM PLL
IC51
11
LOW-PASS
PD
FILTER 15
Q52, 53
PHASE DETECTOR
CHARGE PUMP
12BITS
PROGRAMMABLE
XIN
19
DIVIDER
X51
75kHz SWALLOW
20 XOUT
COUNTER
1/16, 1/17, 4BITS
DI DI
2
CLK CLK
CCB DATA SHIFT REGISTER
3
I/F
CE CE
1
16 16
LOUT
DETO
FM MPXI MPX
3
35 36
DET DECODER
R-CH
VCO
29 12 1
RV2 RV1
AM IF FM STEREO
BAND SELECT
Q2 Q51
12 5 6
PSN
LATCH
TUNER-L
C
(Page 17)
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: FM/TV(2-6CH)
: TV(7-13CH)/WEATHER
: AM