Read Sony ICF-CD843L Service Manual online
ICF-CD843L
17
17
5-5. SCHEMATIC DIAGRAM – CD Board –
JC703
C736
C707
C706
C738
C739
C732
C751
C733
C750
C743
C742
C708
C734
TP
C701
TP
R711
R708
R710
C703
R709
C704
C731
Q701
R707
IC701
R712
R706
R705
R704
R703
R702
R701
CNP701
C702
R724
C747
C730
C744
C729
C728
R725
R726
R728
R727
R729
R730
C746
C745
R731
C717
JC704
X701
FB701
R715
C716
C711
R714
C735
C755
C754
L706
R721
R718
R716
R717
R720
R719
R722
R723
CNP702
C727
C726
C725
C7
24
C723
C722
C721
C720
C740
C741
R741
R744
R743
C709
M702
M701
S701
C705
JC701
JC702
IC702
0
4700p
1
1
50V
0.1
0.1
100
10V
10V
0.1
100
10V
10V
100
10V
10V
0.1
0.1
100p
4700p
(VC)
(FE)
(TE)
(GND)
1000p
(RF)
330
10k
4.7k
0.1
22k
22p
0.047
KTN2907AS-RTK
10
LC78645NE-U
100
47k
15k
15k
15k
15k
47k
16P
47
10V
47k
100
10V
10V
0.1
0.1
1
0.047
680
680
10k
2.2k
220
1k
100
10V
10V
0.1
2.2k
0.01
220
33.8688MHz
150
0.01
0.01
150
1000
6.3V
6.3V
0.01
0.01
(L-CH)
(R-CH)
1k
1k
1k
1k
100
100
100
100
14P
1000p
1000p
1000p
22p
0.01
22p
22p
22p
470
10V
10V
0.1
6.8k
100k
6.8k
0.1
4700p
0
0
BA5826FP-E2
A9
A10
A9
A10
A1
A1
A2
A2
A8
A8
A4
A4
A3
A3
A5
A5
A6
A6
A7
A7
B1
B3
B5
B1
B3
B5
C1
C2
C3
C4
C1
C2
C3
C4
B2
B4
B2
B4
E
D
A
B
C
F
LD
VR
PD
F+
T+
T
−
F
−
SW
GND
V
C
C
M
U
T
E
S
P
+
S
P
IN
S
P
-
S
L
-
S
L
+
R
E
G
O
V
C
C
V
R
E
F
F-
F+
T
-
T
+
R
S
T
DRF
∗
RES
DO
DI
CL
CE
VREF
VCC
GND
FSEQ
∗
WRQ
R
E
G
-B
G
N
D
G
N
D
G
N
D
N
C
O
P
O
U
T
O
P
IN
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
FD
O
S
P
D
O
S
L
D
O
G
P
D
A
C
C
O
N
T
4
C
O
N
T
5
S
B
C
K
/C
O
N
T
6
S
B
C
K
/F
G
D
E
FE
C
T
V
/*
P
FS
E
Q
M
O
N
I1
M
IN
I2
M
O
N
I3
M
O
N
I4
M
O
N
I5
(3
.3
V
)V
S
S
V
D
D
D
O
U
T
T
E
S
T
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
XVDD
XOUT
XIN
FSX/16MIN
XVSS
C2F
EFLG
16MOUT
ASLRCK
ASDACK
ASDFIN
LRSY
DATACK
DATA
C
E
C
L
D
I
D
O
*
W
R
Q
*
R
E
S
D
R
F
V
D
D
5
V
S
S
C
O
N
T
3
C
O
N
T
2
C
O
N
T
1
P
D
O
1
P
D
O
2
V
V
S
S
P
C
K
IS
T
V
V
D
D
FR
L
D
S
L
D
D
SLCO
TX
TY
FX
FY
S
P
Y
S
P
X
S
L
X
S
L
Y
S
L
IN
(S
L
IN
)
FIN
(F
IN
)
T
IN
(T
IN
)
(LIMIT)
SL+
SL
−
SP
−
SP+
(SLED)
(SPINDLE)
AUTOMATIC
POWER CONTROL
RF AMP,FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO,D/A CONVERTER
COIL DRIVE,
FOCUS/TRACKING
SPINDLE/SLED
MOTOR DRIVE
P-GND
CD MOTOR 6.0V
CD R-OUT
CD L-OUT
D-GND
CD VDD 3.3V
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
•
See page 24 for IC Block Diagrams.
•
See page 24 for Waveforms.
(Page 20)
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