Sony ICF-CD853V Service Manual ▷ View online
ICF-CD853V
13
13
25
22
20
16
18
12
19
20
11
FM
RF AMP
FM/TV
LPF
MPX
DECODER
TV/FM
OSC
AM/FM: 1/2
TV: 1/8
PHASE DETECTOR
CHARGE PUMP
DATA SHIFT REGISTER
LATCH
FMIN
MPXI
R-CH
ARFI
150kHz
DETO
45kHz
FMRO
TVRO
AMLO
FTLO
FMIN
63
HP ON
60
POWER ON
52
BUZZER
61
A MUT
76
RESET
48
CD ON
RADIO ON 59
NAP LED
CD LED
RADIO LED
BUZZER LED
68
BACK LIGHT1
49
AC IN
62
HP SW
AMIN
29
IFCT
12
BAND
1
VCO
TV/FM/AM RF AMP,
MIX, OSC, DET, MPX
IC1
FM/AM PLL
IC51
SYSTEM CONTROLLER
IC401 (2/2)
RV2
AM IF
RV1
FM STEREO
D4
VT
AM
OSC
FM
LMT
FM
DET
AGC
AMP
AM
BPF
19
REGV
24
TV
RF AMP
TVIN
ANT1
(FM/TV)
CT3, L3
TV(7 – 13ch)
WEATHER(1 – 7ch)
TRACKING
CT2, L2
CT1, L5
L2
FM RF
CT2
BPF1
AM TRACKING
BPF
L5
AM
FERRITE-ROD
ANTENNA
L1
AM OSC
X51
75kHz
AM
RF AMP
26
CT1
L3
TV RF
CT3
D3
D2
(1/2)
D2 (2/2)
D5
+
+
35
LOUT
3
L OUT 5
R OUT
STANDBY
3
8
NF R
13
R IN
12
NF L
10
L IN
11
36
AMP
Q102
OSC BUFFER
Q2
AM VCO
VOLTAGE
FM/TV(2-6ch)
TRACKING
BUFFER
Q108
AMP
Q101
MUTING
Q106
MUTING
Q405
B+ SWITCH
Q1
RV301
3.3V
R-CH
R-CH
R-CH
D303
Q301
VOLUME
S301
ON OFF
MEGA BASS
BASS BOOST
SWITCH
Q103
LOW-PASS
FILTER
Q52, 53
STANDBY
SWITCH
Q302, 303
+3.3V
REGULATOR
Q951
LIQUID CRYSTAL DISPLAY
LCD401
+6V
REGULATOR
Q952
+3.9V
REGULATOR
Q953
+3.9V
REGULATOR
Q955
POWER AMP
IC302
51
BUZZERMUTE
Q304
Q107
Q207
CD-L
HEADPHONE
SWITCH
Q107, 207
T901
POWER
TRANSFORMER
D401,
D601 – 603
LED 3.9V
D604 – 609
(LCD BACK LIGHT)
Q403,
Q404
Q404
SP101
(L-CH)
(L-CH)
SP201
(R-CH)
J301
(HEADPHONE)
i
PSN
REGULATOR
VCO
BAND SELECT
Q51
15
PD
5
BO1
6
BO2
PSN
SWALLOW
COUNTER
1/16, 1/17, 4BITS
12BITS
PROGRAMMABLE
DIVIDER
CCB
I/F
(AC IN)
RECT
D901 – 903
VT
3.3V
MOTOR 6V
TU 3.3V
CD 3.3V
RECT
D905, 906
RECT
D907 – 910
B+ SWITCH
Q305
67
BACK LIGHT0
XT2
XT1
X2
X1
3.9V
LED 3.9V
RESET SIGNAL
GENERATOR
IC402
D402
CLK
2
3
1
DI
XIN
XOUT
CE
CLK
DI
DI, CLK, CE
CE
70
71
X401
32.768kHz
74
75
X402
4.19MHz
A
(Page 12)
77 – 80
KEY0 – KEY3
43 – 46
COM0 – COM3
6 – 9
SEG0 – SEG27
10 – 37
Q401,
Q402
Q402
Q401 – 404
LED DRIVE
LED DRIVE
S601 – 621
B
(Page 12)
: CD PLAY
: FM
: TV
: AM
•
R-ch is omitted due to same as L-ch.
•
SIGNAL PATH
5-2.
BLOCK DIAGRAM – MAIN Section –
ICF-CD853V
14
14
5-3.
NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS
• Circuit Boards Location
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
PRESET board
LCD board
LED board
ALARM board
MAIN board
CD board
HP board
TRANSFORMER board
VOLUME board
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
ICF-CD853V
15
15
2.6 Vp-p
239 ns
• Waveforms
– CD Board –
– CD Board –
1
IC701
4
(RF) (CD PLAY mode)
2
IC701
qd
(FE) (CD PLAY mode)
3
IC701
qg
(TE) (CD PLAY mode)
4
IC701
rk
(XOUT)
ws
IC401
uf
(X1) (CD PLAY mode)
0.85
±
0.2
Vp-p
Approx.
90 mVp-p
90 mVp-p
Approx.
60 mVp-p
60 mVp-p
2.9 Vp-p
29.5 ns
– MAIN Board –
qa
IC51
w;
(XOUT) (RADIO ON mode)
1.4 Vp-p
13.3
µ
s
– LCD Board –
wa
IC401
u;
(TX1)
7.5 Vp-p
30.4
µ
s
ICF-CD853V
16
16
M702
(SLED)
S701
(LIMIT)
C732
CNP701
X701
CNP702
C702
JW701 JW702
JW703
JW705
JW706
JW707
JW708
JW709
JW713
JW714
JW716
JW717
JW718
JW721
JW722
JW723
JW724
JW725
JW726
JW727
JW728
JW729
JW730
C740
C750
C746
C747
JW719
C735
JW720
JW711
C733
C706
JW712
JW710
JW715
Q701
IC702
C729
C730
R730
R728
R729
C704
R708
C728
R724
R722
R725
R726
R707
C701
C726
C723
C725
C724
R719
R717
R718
R716
C720
C721
C722
R731
R721
R720
C716
R715
R714
C727
C711
C709
FB701
C736
C734
R709
C705
R704
R702
R711
R710
R703
R705
R701
C703
C731
R706
C738
C739
R727
R712
R723
C708
R741
JC701
R743
C751
JC702
C743
C744
C745
C742
C754
C755
C741
JC704
C707
L706
C717
R744
IC701
CD BOARD
A
MAIN BOARD
CN302
M
M
M701
(SPINDLE)
1-680-943-
13
(13)
C
D
E
F
G
H
1
2
3
4
5
6
7
8
A
B
TP
(GND)
TP
(RF)
OPTICAL
PICK-UP
BLOCK
(KSS-213R)
5-4.
PRINTED WIRING BOARD – CD Section –
•
See page 14 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
IC701
C-4
IC702
H-3
Q701
F-5
(Page 18)
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