Sony ICF-CD855 / ICF-CD855L Service Manual ▷ View online
ICF-CD855/CD855L
21
21
6-6.
SCHEMATIC DIAGRAM – CD Section –
•
See page 30 for Waveforms.
•
See page 30 for IC Block Diagrams.
M701
R740
R742
R714
R715
R704
R702
C704
R711 R713
C703
R709
R710
C731
C734
C708
C736
R708
R706
R703
R723
C727
C741
C740
C733
C751
C742
C743
C709
C716
C711
C735
C755
C754
CNP701
R712
C717
R750
R744
R722
R721
R720
R719
R718
R717
R716
C722
C721
C720
C724
C726
C725
C723
R727
R729
C744
R724
R730
C730
R733
R732
R725
R726
IC702
CNP706
S701
M702
R728
L706
CNP702
R739
R748
JC710
R731
C745
C746
C705
JC708
R746
JC709
JC704
JC707
JC705
R741
JC703
JC706
Q701
JC711
IC701
CNP705
FB701
C702
R707
C701
C707
C706
C728
C729
CNP704
X701
R747
R751
220k
470k
470k
220k
10k
10k
22p
220
100
0.1
22k
4.7k
0.047
4700p
(FE)
(TE)
100p
4700p
10k
4.7k
4.7k
100
1000p
0.1
470
10V
10V
100
10V
10V
0.1
0.1
0.1
0.1
0.01
0.01
1000
6.3V
6.3V
0.01
0.01
20P
100
0.01
100
100k
100
1k
100
100
1k
1k
1k
22p
22p
22p
22p
1000p
1000p
0.01
2.2k
220
0.1
47k
1k
0.1
220
220
470
470
BA5826FP
6P
10k
0
14P
1k
100
0
2.2k
0.1
100
10V
10V
4700p
(VREF)
0
4.7k
0
0
0
0
10k
0
0
KTN2907AS-RTK
0
LC78646E
16P
0
47
10V
10
1000p
(RF)
1
1 50V
0.047
1
20P
16.9344MHz
22k
2.2k
Z2
Z3
Z4
Z6
Z7
Z8
Z1
Z
2
Z
3
Z
4
Z
5
Z
6
Z
7
Z
8
Z9
Z10
Z5
Z10
Z9
Z1
SP-
S
P
-
SP+
S
P
+
SL-
S
L
-
SL+
S
L
+
T+
T+
T-
T-
F+
F+
LIM
LIM
LD
LD
PD2
PD2
F
F
PD1
PD1
E
E
PD
PD
TDO
TDO
FDO
S
L
D
O
FDO
SLDO
F-
F-
CONT4
CONT4
SPDO
S
P
D
O
V
CC
M
UT
E
SP+
SPIN
SP-
SL-
S
L+
R
EG
O
V
CC
VREF
F-
F+
T-
T+
R
ST
DRF
DO
DI
CL
CE
FSEQ
R
EG-B
GN
D
G
ND
G
ND
NC
O
PO
U
T
OPIN
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
FD
O
SPD
O
S
LD
O
G
PD
AC
CO
NT4
CO
NT5
S
BC
K/CO
N
T6
SB
CK/FG
D
EFECT
V
/
∗
P
FSEQ
M
O
NI1
M
IN
I2
M
O
N
I3
M
O
NI4
M
O
NI5
(3.3V
)VSS
VD
D
D
OUT
TEST
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
XVDD
XOUT
XIN
FSX/16MIN
XVSS
C2F
EFLG
16MOUT
ASLRCK
ASDACK
ASDFIN
LRSY
DATACK
DATA
CE
CL
D
I
DO
∗
W
R
Q
∗
R
ES
DR
F
VD
D
5
VS
S
C
ON
T3
CO
NT2
CO
N
T1
PD
O
1
PD
O2
VVS
S
PC
KIST
VVDD
FR
LDS
LDD
SLCO
SLIN
(SLIN
)
FIN
(FIN)
TIN
(TIN)
A
C
B
D
F
E
LIM
SL-
SL+
SP-
SP+
GND
PD2
F
PD1
E
VC
VCC
LD
GND
PD
VR
F+
T+
T-
F-
D.GND
R-OUT
L-OUT
CD3.3V(D)
CD6V
P.GND
F-
T-
F+
T+
PD
VR
LD
GND
VCC
VC
E
PD1
F
PD2
SL+
SL-
GND
LIM
SP+
SP-
GND
GND
PD2
F
PD1
E
VC
VCC
SL+
SL-
LIM
SP+
SP-
NC
LD
GND
PD
VR
F+
T+
T-
F-
(SPINDLE)
(LIMIT)
(SLED)
FO
C
U
S
TRAC
KING
WRQ
RES
FOCUS/TRACKING
COIL DRIVE,
SPINDLE/SLED
MOTOR DRIVE
AUTOMATIC
POWER
CONTROL
RF AMP,FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
D/A CONVERTER
CLV SERVO,DIGITAL FILTER,
PD
LD
ON:WHEN THE OPTICAL PICK-UP IS
INNER POSITION
(Page 29)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
ICF-CD855/CD855L
22
22
1-688-455-
(11)
11
IC2
JC5
C1
R61
R63
TP
(VT)
R59
R60
C37
C77
R13
C78
C24
JC6
JC13
JC4
C14
IC1
C43
C32
JC3
C8
JC2
C61
R50
R91
C51
C56
R56
JC1
C26
C27
C65
R58
C62
R54
C11
C63
R92
R41
C39
R30
C80
R40
R2
C22
C31
C55
R1
R10
C59
C7
C34
C95
R11
R31
C57
C4
C41
R51
R53
JC24
C35
R24
R3
C42
C33
L11
C47
C20
D10
C15
D1
D2
R94
R32
C9
C30
R4
C52
C60
C66
C68
D11
R52
JC34
JC33
C18
JW3
JW9
JW4
JW13
JW8
JW7
JW11
JW10
JW12
C29
C21
C12
T2
C54
CT3
JC12
CT1
C10
C23
L1
D3
L4
JW5
L2
CF2
T1
X1
JW6
JC11
L3 AM FERRITE-ROD ANTENNA
C13
CF4
R65
C49
L21
C53
CNP1
(CD855: CND)
(CD855: CND)
(CD855: IT)
(CD855: IT)
TP
(GND)
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C
D
E
F
G
MAIN BOARD
BH301
TP
(ANT)
ANT1
FM
LEAD WIRE
ANTENNA
B
6-7.
PRINTED WIRING BOARD – TUNER Board (ICF-CD855) –
•
See page 19 for Circuit Boards Location.
:Uses unleaded solder.
(Page 27)
D1
C-9
D2
D-8
D3
D-8
D10
C-11
D11
C-11
IC1
E-9
IC2
F-4
• Semiconductor
Location
Ref. No.
Location
ICF-CD855/CD855L
23
23
C78
D10
D11
C32
C4
C10
C8
R3
R2
R1
CF2
CF4
C1
C11
JC13
C12
C9
C7
TP
C13
C34
L1
C35
D
1
CT1
C33
R32
R30
C80
C31
C30
L2
R31
D
2
R24
C23
JC3
C24
C21
R11
C22
C20
JC11
JC12
D3
C49
R41
R40
C47
C43
C42
C41
L3
C37
C39
L4
C61
C62
C63
JC4
R61
R60
R59
R58
C29
C27
C26
JC1
R10
JC34
JC2
JC33
R92
C66
C68
R94
C60
R4
JC5
R56
R13
TP
C57
R53
C55
C95
R54
C54
C59
C51
C52
R91
R51
C53
R65
R52
R50
R63
C65
C56
TP
X1
T2
T1
JC6
C15
C14
C18
C77
CT3
JC24
CNP1
IC1
IC2
ANT1
4700p
1SS355
1SS355
0.001
0.001
1
50V
0.001
10k
470
330
47p
0.1
0
4.7
50V
50V
10p
5p
(ANT)
0.01
0.01
0.01
KV1471E
0.01
100k
15k
0.01
22p
0.01
3.3k
KV
1471E
220
1
50V
0
220p
1
50V
3.3k
0.1
0.1
0
0
KV1520NT
0.01
10k
220k
10p
22p
100p
220p
0.01
0.1
100p
100p
100p
0
2.2k
2.2k
2.2k
2.2k
100
10V
10V
100p
100p
0
47
0
0
0
220
100p
100p
1k
0.001
10k
0
330
L21
10
µ
H
1k
(GND)
0.001
15k
100p
0.001
470
220
10V
10V
100p
22p
10p
220
10k
0.22
10k
0
1k
10k
4.7
50V
50V
0.001
(VT)
75KHz
FM IFT
AM IFT
0
220
10V
10V
4700p
0
L11
1
µ
H
11P
TA2149BN
LC72137M-TLM
∗
∗
RADIO 6V
VT
XOUT
XIN
LP-OUT
LP-IN
PD
VSS
VDD
MO/ST
FM IN
AM IN
CE
DI
CL
DO
BAND
ST
-IND
IF IN
MUTE
AM OSC
FM OSC
VCC1
OSC-OUT
IF-OUT
DET
-OUT
MPX-IN
R-OUT
L-OUT
ST
-IND
QUAD
GND2
IF-IN
AM
IF-IN
FM
VCC2
AGC
LPF1
/BAND
LPF2
/MO-ST
GND1
FM
RF-IN
RF-OUT
AM
RF-IN
FM
AM
LOW CUT
OUT
MIX-
BAND
FM/AM PLL
AM OSC
R-COUNT
R-CLOCK
R-DATA
R-CE
A-GND
S-GND
C14,15
0.022
0.01
FM OSC
FM
RF
ANTENNA
AM FERRITE-ROD
ANTENNA
FM/AM
B-MUTE
TU-L-OUT
TU-R-OUT
∗
FM/AM RF AMP,
MIX,OSC,IF AMP,
DET,MPX
(CD855:CND)
(CD855:IT)
(CD855:IT)
(CD855:CND)
(CD855:CND)
(CD855:IT)
FM LEAD WIRE
6-8.
SCHEMATIC DIAGRAM – TUNER Board (ICF-CD855) –
•
See page 30 for Waveform.
•
See page 30 for IC Block Diagrams.
(Page 29)
ICF-CD855/CD855L
24
24
C18
JW3
JW9
JW4
JW13
JW8
JW7
JW11
JW10
JW12
C53
C29
C49
C21
L21
C12
T2
CNP1
C54
CT3
CT1
C10
C23
L1
D3
L4
JW5
L2
CF2
T1
X1
JW6
IC1
CF4
IC2
JC5
C1
R61
R63
R59
R60
C37
C77
R13
C78
C24
JC6
JC4
C14
C43
C32
JC3
C8
JC33
JC2
C61
R50
R91
C51
C56
R56
JC1
1
11
R58
C62
R54
C11
C63
R92
R41
JC34
C39
R30
C80
R40
R2
C22
C31
C55
R1
R10
C59
R52
C7
C34
C95
R11
R31
C57
C4
C41
R51
R53
C35
R24
R3
C42
C33
C20
D10
C15
D11
D1
D2
R94
R32
C9
C30
R4
C52
C60
C66
C68
JC24
Q61
CT5
R16
C58
C70
JC23
R22
R43
C40
C64
C25
C73
C93
R19
R17
R12
C5
R64
C72
C48
C46
C6
C71
C3
C44
JC22
C45
R42
R18
R7
R93
C2
R9
Q41
Q43
Q12
Q44
Q14
Q42
R66
TUNER BOARD
C
MAIN BOARD
BH301
TP
(VT)
TP
(GND)
TP
(ANT)
1-688-451-
11
(11)
C
D
E
1
2
3
4
5
6
7
8
9
10
A
B
L3 – 1
MW FERRITE-ROD
ANTENNA
L3 – 2
LW FERRITE-ROD
ANTENNA
–1
–2
ANT1
LEAD WIRE
ANNTENA
6-9.
PRINTED WIRING BOARD – TUNER Board (ICF-CD855L) –
•
See page 19 for Circuit Boards Location.
:Uses unleaded solder.
(Page 27)
Q12
E-5
Q14
B-3
Q41
B-4
Q42
C-6
Q43
B-5
Q44
C-5
Q61
C-3
Ref. No.
Location
Ref. No.
Location
D1
C-8
D2
C-6
D3
C-6
D10
B-9
D11
B-9
IC1
D-7
IC2
D-3
• Semiconductor Location
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