DOWNLOAD Sony ICF-CD853V Service Manual ↓ Size: 2.4 MB | Pages: 39 in PDF or view online for FREE

Model
ICF-CD853V
Pages
39
Size
2.4 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cd853v.pdf
Date

Sony ICF-CD853V Service Manual ▷ View online

10
ICF-CD853V
Adjustment Location:
– MAIN BOARD (Component Side) –
L1 AM VCO Voltage Adjustment
L5
AM Tracking Adjustment
CT1 
}
L3
TV (7 – 13 ch)/Weather (1 – 7 ch)
CT3 
}
Tracking Adjustment
CT2
FM/TV (2 – 6 ch) Tracking Adjustment
L2    
}
RV1 FM Stereo Adjustment
RV2 AM IF Adjustment
– MAIN BOARD (Conductor Side) –
TP
(ANT)
TP
(AM GND)
TP
(RADIO +B)
TP
(VT)
TP
(FM GND)
ICF-CD853V
11
11
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
FOCUS  BIAS  CHECK
1. Connect the oscilloscope to TP (RF) and TP (GND) on the CD
board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
u
(CD) button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (
) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
0.8 
±
 0.2 Vp-p
When observing the eye pattern, set the oscilloscope 
for AC range and raise vertical sensitivity.
Adjustment Location:
IC701
TP (GND)
TP
(RF)
– CD BOARD (Conductor Side) –
ICF-CD853V
12
12
A
A
B
B
D
D
F
F
E
E
C
C
I-V AMP
DETECTOR
12
11
17
18
26
SL+
SL–
F–
F–
F+
F+
T+
T+
T–
T–
SPINDLE
MOTOR DRIVE
M701
(SPINDLE)
S701
(LIMIT)
SLED
MOTOR DRIVE
27
M702
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SP+
SP–
3
25
9
19
FIN
TIN
SLIN
SPIN
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC702
LD
LD
PD
PD
LASER DIODE
OPTICAL PICK-UP
(KSS-213R)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
2
1
1
M
M
7
MUTE
AUTOMATIC
POWER
CONTROL
Q701
8
FIN2
7
FIN1
+
MIX
4
RF
LPF
EQ
PH
BH
10
TIN2
9
TIN1
A/D
SW
LPF
TRACK
JUMP
TBAL
80
LDD
APC
AUDIO
ADJUST
SERVO
PROCESSOR
RUPTURE
DETECT
79
LDS
SW
AGC
D/A
13
FE
15
TE
20
TDO
21
FDO
23
SLDO
22
SPDO
S/H
3
EFM
IN
SLISE LEVEL
CONTROL
ERROR
CORRECTION
AUDIO CD
C1 – 2, C2 – 2
RAM
8FS
DIGITAL
FILTER
INTERPOLATION
MUTE
ATTENUATION
DEEMPHASIS
1 BIT
DAC
42
LCHO
45
RCHO
LPF
39
DOUT
AUDIO
OUT
FSEQ
PLL
VCEC
CLV, CAV
CONTROL
FRAME SYNC
DETECT,
PROTECT INSERT,
EFM DECODE
31
RAM
DRF
67
25
CONT4
72
CONT1
66
RES
61
CE
62
CL
63
DI
64
DO
65
WRQ
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC701
50 WRQ
56 DATA-IN CD
54 DATA CD/RADIO
55 CLK CD/RADIO
53 LAT CD/RADIO
58 XRST
57 DRF
41 FSEQ
CD-L
39
OPEN
S302
CD LID OPEN/CLOSE
DETECT
D306
D307
D308
(Page 13)
A
SYSTEM
CONTROLLER
IC401 (1/2)
R-CH
: CD PLAY
 R-ch is omitted due to same as L-ch.
 SIGNAL PATH
DI, CLK, CE
(Page 13)
B
GENERAL-PURPOSE
PORTS
COMMAND
INTERFACE
DRF
XOUT
XIN
49
48
X701
33.8688MHz
DI
CLK
CE
D52
D53
D54
SECTION  5
DIAGRAMS
5-1.
BLOCK  DIAGRAM  – CD Section –
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
SP101
(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
Q401 – 404
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 –
Page of 39
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