Sony ICF-CD73 / ICF-CD73V Service Manual ▷ View online
ICF-CD73/CD73V
29
29
6-13. SCHEMATIC DIAGRAM – MAIN Section –
•
See page 33 for Waveforms.
LCD401
R405
R403
R401
C401
C402
C403
L402
X402
R482
C439
C438
C436
R480
C435
C434
C433
R478
R479
C428
C429
C430
C432
C431
R477
R476
R475
R474
R473
C441
C442
C443
R485
R486
R487
R488
R407
R489
C445
R506
R504
IC402
IC403
C451
C452
C456
C457
C416
C419
C420
C421
C422
C423
C424
C425
C426
R459
R460
R461
R462
R463
R464
R465
R466
R467
R468
R469
R470
R496
C454
R453
R454
R456
R457
R450
R451
C413
C414
C415
R508
R498
C455
R552
R553
R554
R556
S502
S501
C408
R162
C156
R161
Q153
R166
R164
R165
R167
Q152
R160
C160
R156
R159
C155
R267
R265
R262
R264
R266
C256
R261
Q252
Q253
R260
C260
R256
R259
C255
C163
R268
R277
R254
R278
C262
R272
Q254
R274
R174
Q154
C162
R178
R177
C418
C417
R495
R501
R493
R509
R500
R499
R507
R458
R492
R502
C449
C448
R484
C444
C437
C440
R505
C407
R472
L404
R446
C450
C351
C263
C353
R276
C354
R257
C253
D352
R154
C152
R172
R354
C412
D351
D353
D354
R494
R510
C453
Q301
C258
R352
R157
C261
C161
C153
R275
R253
C251
R252
R152
C151
R176
R353
R168
R279
R179
R153
R175
C352
CNP402
Q401
C406
D403
Q403
D401
D402
CNP602
CNP601
R601
R602
R603
R604
R605
R606
R608
R609
R610
R612
S601
S602
S603
S604
S605
S606
S607
S608
S609
S610
S611
R613
R614
R616
R615
R618
R619
R620
R622
C252
R351
R448
R497
CNP401
C446
R409
C458
Q406
R433
R435
R437
TP501
TP502
R491
R444
R443
R442
R441
R440
R439
R438
R436
R434
R432
IC401
R445
RV601
C460
L405
C405
L401
R452
R449
R455
S503
C410
C411
C409
C447
S551
C158
X401
Q405
Q251
Q151
R471
100k
100k
100k
2.2
2.2
2.2
4.19MHz
0
22p
22p
2.2
0
0.1
22p
22p
10k
10k
1000p
47p
100p
220p
220p
1k
1k
1k
1k
1k
0.01
0.01
0.01
1k
1k
1k
1k
22k
470k
0.01
22
22
XC61CN2002MR
XC6201P332PR
2.2
0.1
2.2
2.2
0.01
100p
100p
220p
100p
220p
100p
1000p
0.01
1k
1k
1k
1k
47
100
100
1k
10k
1k
1k
10k
470k
0.01
220k
100k
220k
100k
220k
100k
0.01
0.01
0.01
220k
220k
0.01
22k
47k
22k
10k
0.01
100k
0.47
1k
2SC4081
100k
22k
22k
0
2SC4081
1k
1
10k
1k
0.01
0
22k
100k
22k
100k
0.47
1k
2SC4081
2SC4081
1k
1
10k
1k
0.01
1000p
0
220k
470
100k
0.1
4.7k
2SC4081
1k
1k
2SC4081
0.1
100k
220k
0.01
1000p
100k
220k
220k
220k
220k
220k
220k
10k
470k
22k
0.1
0.1
10k
10
6.3V
100
4V
0.01
220
1000p
220k
1k
0.1
47
4V
4V
1000p
47
4V
4V
220k
47
4V
4V
100k
100p
1SS355
470
0.47
4.7k
100
0.01
1SS355
1SS355
1SS355
220k
220k
0.01
2SC4081
0.47
100
100k
0.047
0.047
100p
4.7k
2.2k
4700p
10k
10k
4700p
220k
1k
0
4.7k
4.7k
2.2k
4.7k
47
4V
4V
13P
2SC4081
0.01
RB411D
DTA124EUA
RB411D
RB411D
3P
6P
220k
470k
220k
100k
100k
47k
22k
47k
22k
10k
220k
100k
47k
100k
22k
47k
22k
10k
0.47
1k
1k
1k
11P
0.1
10k
0.01
DTA114EUA
10k
10k
10k
100k
10k
10k
10k
10k
10k
1k
1k
10k
10k
10k
-A33-8BT
1k
20k
1000p
0.01
100
100
100
100
4V
0.01
2.2
0.047F
5.5V
0.47
32.768KHz
DTS144EUA
2SC4081
2SC4081
10k
A1
A2
A3
A4
A5
A1
A2
A3
A4
A5
B1
B2
B3
B4
B1
B
2
B3
B
4
C1
C2
C3
C4
C5
C6
C7
C8
C1
C
2
C
3
C
4
C
5
C
6
C
7
C
8
C9
C
9
S
E
G
0
S
EG
1
S
E
G
2
S
E
G
3
S
E
G
4
S
E
G
5
S
E
G
6
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
S
E
G
1
7
S
E
G
1
6
S
E
G
1
5
S
EG
1
4
S
EG
1
3
S
EG
1
2
S
E
G
1
1
S
E
G
1
0
S
EG
9
S
E
G
8
S
E
G
7
SEG6
SEG5
SEG4
SEG3
SEG2
C
O
M
3
C
O
M
2
C
O
M
1
C
O
M
0
SEG1
SEG0
FSEQ
K
E
Y
0
K
EY
1
K
E
Y
2
A
V
S
S
C
D
O
N
A
C
IN
W
R
Q
B
U
Z
Z
E
R
D
R
F
X
R
S
T
AVDD
CD OPEN
X2
X1
IC
NC
V
L
C
0
V
L
C
1
V
L
C
2
N
C
N
C
VSS0
VDD0
SYSTEM CONTROLLER
XT1
XT2
POWER ON
R ON
NC
NC
NC
NC
NC
NC
N
C
C
D
CE
C
D
C
LK
C
D
D
A
T
A
C
D
C
H
K
K
E
Y
C
H
K
N
C
V
H
V
M
NC
COUNT
R CLK
R DATA
R CE
LOAD
LIQUID CRYSTAL DISPLAY
VT
GND
RCH
R +B
LCH
PLL DATA
COUNT
MUTE
VT
R +B
R ON
AC IN
VM
POWER ON
BUZZER
AMUT
AGC
+B
V
G
RST
FSEQ
DRF
WRQ
CL
CE
DI
RES
RCH
LCH
+3.3V
CD ON
DO
GENERATOR
RESET SIGNAL
R
C
H
P
R
E
G
N
D
L
C
H
CONTROL
SWITCH
Q252,253
LINE AMP
LINE AMP
Q152,153
CONTROL
SWITCH
MUTING
S GND
R CE
R CLK
(ICF-CD73V)
(ICF-CD73)
1
2
2
1
(CD LID OPEN/CLOSE)
+3.3V REGULATOR
CONTROL
SWITCH
LOAD
(CD73:CND,UK,MX)
(CD73:UK)
(CD73:IT)
VERSION0
VERSION1
VERSION2
C
D
D
A
T
A
IN
MUTE
RESET
A MUTE
B MUTE
BATT CHK M
CD
OFF
RADIO
ON
BAND
1
6
1
11
WAKE UP
SWITCH
AGC
AGC
SELECT/
PRESET
PRESET TUNING/PRESET TIMER
5
4
3
2
1
TIMER
EST
ON/OFF
VOLUME
OFF
AUTO
MODE
CLOCK
+
-
TUNE/TIME SET
TIMER SET
G
O
I
AGC
DC
MIDDLE VOLTAGE
CONTROL SWITCH
-1
-2
FILTER AMP
FILTER AMP
(
EXCEPT CD73: IT
)
(
EXCEPT CD73: UK
)
(C
D
7
3
:IT,C
D
7
3
V
)
µCDM-GND
100
µH
µPD789477GC
100
µH
(Page 23)
(Page 25)
(Page 27)
(Page 31)
(Page 31)
Ver. 1.1
ICF-CD73/CD73V
30
30
6-14. PRINTED WIRING BOARDS – POWER Section –
•
See page 21 for Circuit Boards Location.
:Uses unleaded solder.
D101
B-8
D201
B-7
D301
J-9
D302
H-10
D303
I-9
D304
J-9
D305
J-8
D307
G-9
D308
F-9
D309
A-8
D310
H-8
D311
D-10
D312
H-8
D901
H-3
D902
G-5
IC301
G-8
IC303
C-9
Q101
B-8
Q201
D-8
Q301
J-8
Q302
D-9
Q303
D-9
Q304
F-8
Q305
F-8
Q306
J-9
Q307
I-8
• Semiconductor
Location
Ref. No.
Location
C334
R333
R208
R108
R334
R319
R318
R106
C105
R104
R109
R105
R103
R102
R316
C325
R202
C326
C103
C203
R205
R203
C205
R204
R206
R209
R317
Q303
B
C
E
B
C
E
Q101
B
C
E
Q201
C324
R307
R308
C313
R309
R312
C309
C314
Q305
B
C
E
Q304
B
C
E
L301
C312
D308
A
K
R313
C311
C307
C306
IC301
R310
R311
R303
C333
R301
C320
R304
R321
Q306
B
C
E
E
C
B
Q301
R320
R306
C302
R322
4
1
CNP304
C201
+
JW310
JW0314
JW309
1
4
8
5
JW311
C101
+
C335
+
C327
+
D309
D101
D201
1
3
C104
+
C204
+
1
11
2
10
CNP301
JW306
JW307
JW308
JW305
C323
+
C305
+
Q302
D311
C315
+
C310
+
C308
+
D307
C304
+
JW302
JW303
1
3
CNP303
JW304
D302
Q307
D304
D301
D303
JW312
JW301
1
4
CNP302
D305
C303
+
R305
JW313
L302
D310
D312
T301
POWER BOARD
SP101
(L-CH)
(L-CH)
SP201
(R-CH)
C
LCD BOARD
CNP401
F
KEY BOARD
CNP602
E
CD BOARD
(CHASSIS)
3
1
4
5
(11)
11
1-687-320-
R901
C901
+
JW903
JW901
D902
1
3
CNP901
1
4
KH901
D901
R902
JW902
J901
L901
(CD73: CND, CD73V)
(CD73: UK, IT)
(11)
11
1-687-321-
DRY BATTERY
SIZE "C"
(IEC DESIGNATION)
4PCS. 6V
DC IN 6V
–
+
JACK BOARD
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
J
IC303
(Page 22)
(Page 28)
(Page 28)
ICF-CD73/CD73V
31
31
6-15. SCHEMATIC DIAGRAM – POWER Section –
KH901
CNP302
D901
JW903
JW901
R902
CNP901
L901
CNP301
CNP303
C333
R303
Q301
R304
D303
D304
C302
R306
D305
C303
R320
R322
Q302
Q303
R308
R307
C305
D310
C304
R301
D301
Q304
Q305
Q306
R321
C320
Q307
L301
L302
D312
C307
C306
C308
R309
C309
C310
R310
R311
D307
C312
R312
C313
R313
D308
C314
C315
CNP304
IC303
C103
C203
C104
R102
R316
C325
C326
R317
R204
R205
R206
R209
C205
D201
Q201
C204
Q101
R203
R103
R104
R105
R106
D101
R109
C105
C327
R318
R319
R208
R108
C101
C201
D309
R333
C334
C335
R334
C323
C324
D311
R202
R305
D302
J901
D902
C901
R901
C311
T301
SP101
SP201
IC301
4P
4P
1N4002
100
3P
11P
3P
0.1
10k
2SA1576
10k
1SS119
1SS119
0.01
10
MTZJ-6.8B
220
10V
10V
22k
1k
2SB1013
DTC114EUA
1k
47k
470
10V
10V
1SS119
100
10V
10V
1k
1N4002
2SC4081
2SC4081
2SC4081
4.7k
0.01
2SD2396K
1SS119
0.1
0.1
100
4V
10
0.01
10
50V
100k
47k
MTZJ-6.8B
1
47k
22p
1k
1SS355
0.1
1
50V
4P
LA4525
470p
470p
1
50V
220k
4.7k
0.022
2200p
10k
10k
10k
1k
22k
1000p
1SS119
2SD1757K-T146
-RS
1
50V
2SD1757K-T146
-RS
4.7k
4.7k
10k
10k
1k
1SS119
22k
1000p
4.7
16V
16V
100k
2.2k
4.7k
4.7k
470
4V
470
4V
1SS119
47k
0.047
4.7
16V
16V
1M
470
10V
10V
0.1
1SS119
220k
47
RD3.0ES-T1B2
1N4002
1000
16V
1k
0.01
XC62HR3302PR
VT
R ON
AC IN
VM
POWER ON
BUZZER
AMUT
AGC
+B
DGND
PVCC
PGND
G
N
D
VD
D
CE
NC
VOUT
RCH
LCH
GND
GND
GND
GND
PRE
VCC
NC
LCH
PRE GND
RCH
1
3
MUTING
MUTING
R +B
Q304,305,T301
DC/DC
CONVERTER
REGULATOR
+3.3V
Q302,303
B+ SWITCH
Q301,306,307
+6V REGULATOR
SPEAKER AMP
(CHASSIS)
DRY BATTERY
SIZE"C"
4PCS. 6V
(IEC DESIGNATION)
DC IN 6V
(CD73:UK,IT)
CD73V
CD73: CND
(L-CH)
(R-CH)
10µH
47µH
µCDM GND
47µH
(Page 23)
(Page 29)
(Page 29)
ICF-CD73/CD73V
32
32
• IC Block Diagrams
– CD Board –
– CD Board –
IC701
LC78646E-US-E
IC702
BH6575FV-E2
– TUNER Board –
IC1
TA2149BN
IC2
LC72137M-TLM
60
59
58
57
56
55
54
53
52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
SLCO
SLCIST
EFMIN
RF
FDO
SPDO
SLDO
GPDAC
FDO
SPDO
SLDO
GPDAC
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
V/P
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
VSS
VDD(3.3V)
69 68 67 66
65 64 63 62 61
VSS
VDD5
DRF
RES
WRQ
DO
DI
CL
CE
79
78 77 76 75 74 73 72 71
LDS
80
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
70
CONT3
WRQ
DO
DI
CL
CE
CE
FR
VVDD
PCKIST
VVSS
SBCK/FG
PDO2
PDO1
CONT1-3
SBCK/CONT6
CONT4,5
CONT4,5
DRF
WRQ
DO
DI
CL
CE
LDS
LDD
LDS
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
CONT3
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
FIN1
FIN2
TIN1
TIN2
REFI
REFI
DEFECT
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
SLCO
SLCIST
EFMIN
RF
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
JITTC
ADAVDD
ADAVSS
ADAVDD
ADAVSS
TDO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
DATA
DATACK
LRSY
RVDD
RVSS
RCHO
LCHO
LVSS
LVDD
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
16MOUT
XVSS
XIN
XOUT
XVDD
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
39 40
DOUT
TEST
51
50
49
48
47
46
45
44
43
42
41
+
–
MIX
PH
BH
MONI
CONT
CONT
AGC
+
–
+
–
+
–
+
–
+
–
+
–
LPF
TBAL
TBAL
RAM
TDO
TRACK JUMP
SW
D/A
APC
SUBCODE DECODE CRC
GENERAL PURPOSE
PORTS
8FS
DIGITAL FILTER
1BIT DAC
LPF
ERROR
CORRECTION
AUDIO CD
MONITOR SIGNAL SELECTOR
EXTERNAL
AUDIO IN
AUTO ADJUST
FRAME SYNC
DETECT,PROTECT,INSERT,
EFM DECODE
A/D
CLOCK
GENERATOR
COMMAND
INTERFACE
INTERFACE
SERVO PROCESSOR
LEVEL SET
+
–
S/H
SW
DRF
DRF
ATTENUATION
DEEMPHASIS
INTERPOLATION
MUTE
RUPTURE DEFECT
SLICE LEVEL
CONTROL
CLV,CAV
CONTROL
SERIAL
OUT
AUDIO OUT
RAM
JITTER
DETECT
PLL
VCEC
FE
TE
TEC
RF
RFMON
VREF
SPDO
SLDO
GPDAC
FSEQ
MONI1-5
FDO
LPF
LPF
EQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
START
OFF
CLK
MUTE34
MUTE1
RESET
IN1
IN2
IN3
IN4
VREF
FIL1
FIL2
FIL3
FIL4
PGND1
OUT4
−
OUT4
+
OUT3
−
OUT3
+
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
EO
EI
VSYS
SW
VG
LG
PGND3
GND
REGO
REGB
DC IN
CT
SOFT
SPRT
PGND2
OUT1
+
OUT1
−
OUT2
+
OUT2
−
PVCC
VSYS
DC/DC
CONVERTER
SYSTEM
OFF
SYSTEM
ON
OSC
MUTE34
MUTE1
RESET
PRE-DRIVER
PRE-DRIVER
PRE-DRIVER
PRE-DRIVER
VG
CONVERTER
REGULATOR
VSYS
DETECT
RF GND
3
2
1
IF REQ
AM
MIX
FM RFIN
AM LOW CUT
5
4
MIX OUT
VCC
AM IF IN
8
7
6
FM IF IN
GND
10
9
AGC
QUAD
12
11
R-OUT
L-OUT
FM RFOUT
22
23
24
20
21
17
18
19
15
16
13
14
AM RFIN
RF VCC
FM OSC
ST LED
OSC OUT
AM OSC
IF REQ
LPF1
MPX IN
DET OUT
LPF2
FM
MIX
FM
OSC
LEVEL
DET
AM
DET
MUTE
FM
DET
ST/MO
FM/AM
AM
OSC
AGC
SW
ST
1/8
BUFF
BUFF
DIVIDE
DECODE
VCO
IF BUFF
AF BUFF
AF
FM RF
AM IF
FM IF
1/1 OR
1/16
11
10
9
8
7
6
5
4
3
2
1
12
13
14
15
16
19
20
UNLOCK
DETECTOR
POWER ON
RESET
UNIVERSAL
COUNTER
CCB
I/F
CE
DI
CL
DO
XOUT
AOUT
XIN
AIN
PD
VSS
VDD
B04
FMIN
AMIN
B01
B02
B03
I01
I02
IFIN
PHASE
DETECTOR
CHARGE
PUMP
REFERENCE
DIVIDER
SWALLOW
COUNTER
1/16,1/17
4BITS
12BITS
PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
1/2
17
18
– POWER Board –
IC301
XC62HR3302PR
+
–
–
3
OUTPUT
CONTROL
REFERENCE
VOLTAGE
4
1
2
5
CURRENT
LIMIT
NC
VIN
CE
VSS
VOUT
Ver. 1.1
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