Read Sony ICF-CD853 / ICF-CD853L Service Manual online
ICF-CD853/CD853L
13
13
5-2.
BLOCK DIAGRAM – TUNER Section –
CF1
10.7MHz
FM/AM PLL
IC51
CT1, L1
FM TRACKING
CT2, L3
AM TRACKING
LOW-PASS
FILTER
LOW-PASS
FILTER
• SIGNAL PATH
: FM
: AM
X51
75kHz
L1
FM RF
XOUT
XIN
AM IN
A OUT
A IN
FM IN
20
19
11
12
18
BO2
6
CT1
D2
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
BO1
DI
CL
CE
PD
2
3
1
5
17
16
• R-ch is omitted due to same as L-ch.
DI
CLK
CE
R-CH
(Page 12)
B
TU-L
(Page 14)
C
L3
AM FERRITE-ROD
ANTENNA
(CD853L)
(CD853)
(CD853)
DI, CLK, CE
18
20
16
13
24
22
FM
FRONT-END
AM
FRONT-END
FM IF AMP/
DISCRI
DECODER
AMP
SWITCH
TUNING
INDICATOR
STEREO/MONO
SELECT
FM/AM
SELECT
REGULATOR
1/2
CONTER
VCO
AM IF AMP/
DET
PD2
PD1
14
FM
ANT
ANT
19
AM RF
IN
IN
FM/AM
FE OUT
CF3
10.7MHz
CF2
450kHz
FM RF
26
DISCRI
FM
IF IN
IF IN
4
ST IND
3
AM
IF IN
IF IN
PILOT DET
LPF
15
BAND SW
21
REG
29
PLL LPF
27
VCO
1
PLL LPF
2
PILOT DET
LPF
AM OSC
FM OSC
FM/AM FRONT-END,
FM/AM DET, MPX
IC1
T1
AM IF
LCH OUT
6
RCH OUT
5
T1
AM IFT
RV1
FM STEREO
ANT1
(FM)
BPF1
BPF
L.P.F.
CT4
LW VCO
VOLTAGE
CT3, L3-2
LW
TRACKING
CT2, L3-1
MW
TRACKING
L3
MW/LW
FERRITE-ROD
ANTENNA
CT2
Q2
CT3
L3-2
(LW)
L3-1
(MW)
Q2
MW/LW
SWITCH
D5
(1/3)
D5
(2/3)
CT2
D4
(1/2)
L4
AM(MW/LW) VCO
VOLTAGE
CT4
L4
AM
OSC
Q3
LW
SWITCH
D5
(3/3)
D4
(2/2)
Click on the first or last page to see other ICF-CD853 / ICF-CD853L service manuals if exist.