Sony ICF-CD7000 Service Manual ▷ View online
ICF-CD7000
25
25
ICF-CD7000
6-10. SCHEMATIC DIAGRAM – AMP Section –
•
See page 26 for IC Block Diagrams.
CN351
C908
C905
C909
R913
R912
C904
C907
C903
Q901
R908
D902
R906
R905
R901
R902
R903
R904
Q902
D903
C902
C910
C911
C901
IC351
µ
TV8227 S
Q251
Q151
C154
C254
R154
R153
R254
R253
C351
R352
C153
C253
C255
C155
C257
C157
R255
R155
C256
C156
R256
R156
R257
C906
R152
R252
C251
C151
R351
Q352
Q351
R157
C158
C353
C352
Q353
Q354
C159
C356
C354
C355
C258
C259
R158
C161
C261
C260
CN353
SP201
SP101
CN352
R447
R449
R402
R404
R406
R408
R410
R412
R414
R416
R418
S410
R419
R420
R421
R422
R423
R424
R425
R426
R427
R428
R429
R430
R431
R432
R433
R434
R437
R439
D401
D402
R435
S420
Q401
Q402
S411
S416
S417
S418
S412
S413
S414
S415
S401
S402
S403
S404
R407
R405
R403
R401
R409
R411
R413
R415
R417
S405
S406
S407
S408
S409
S422
S421
R450
R258
C160
D901
Q903
Q904
R909
R910
TP406
16P
0.1
0.1
100
10V
10V
100
47
470
10V
10V
100
10V
10V
0.01
2SC3052EF-T1-LEF
10k
MC2837
10k
10k
4.7k
4.7k
4.7k
4.7k
2SA1235TP-1EF
UDZSTE17-6.8B
0.01
0.01
47p
1000
16V
2SC3052EF-T1-LEF
2SC3052EF-T1-LEF
1000p
1000p
1k
10k
1k
10k
4.7
50V
50V
10k
1000p
1000p
1
50V
1
50V
470p
470p
2.2k
2.2k
2200p
2200p
1k
1k
100
220
10V
10V
4.7k
4.7k
1
50V
1
50V
1k
RT1N144C
RT1P144C
100
47
10V
1000p
100
10V
10V
RT1P141C
RT1N441C
100
10V
10V
0.1
0.1
470 16V
47
10V
100
10V
10V
2.2
0.22
0.22
470
10V
10V
4P
2P
100k
100k
100k
47k
470k
100k
47k
100k
47k
470k
220k
22k
47k
22k
100k
47k
47k
47k
470k
100k
220k
22k
47k
22k
100k
47k
47k
220
220
∗
∗
1k
RT1P144C
RT1P436C
100k
47k
47k
22k
22k
22k
47k
47k
100k
220k
2.2
470
10V
10V
MC2836
2SD2394-F
2SD2394-F
100
100
MO6V
MOGND
C-GND
C-GND
AU6V
KEY0
U-GND
P-ON
TU6V
AMUT
VT
TUGND
SGND
L-OUT
AGND
R-OUT
STB
Y
R
O
U
T
R
IN
+
LIN
+
RIP
PLE
LO
U
T
VC
C
BS L
L NF
R
N
F
PR
E
GN
D
B
S R
POWER
GND
GND
POWER
KEY0
GND
GND
GND
KEY0
KEY3
KEY2
GND
GND
OFF
KEY1
KEY0
SNOOZE
GND
+6.2V
HIGH
MID
SNOOZE/BRIGHTNESS
Q401,402
LED DRIVE
∗
D401,402
1L4344B22COCDT02 (for WHITE, BLACK)
1L0345W31B0CT001 (for BEIGE)
4
1
OFF
ALARM RESET
VOLUME
+
AUDIO
IN
TUNE
TIME SET
+
RADIO ON
BAND
CD
ALARM
B
VOLUME
-
TUNE
TIME SET
-
1
3
ALARM
MODE
SLEEP
NAP
PRESET
TUNING
5
TRACK
SELECT
PRESET
PRESET
TUNING
TRACK
PRESET
TUNING
TRACK
PRESET
TUNING
TRACK
PRESET
TUNING
TRACK
1
2
3
4
SELECT
PRESET
SELECT
PRESET
SELECT
PRESET
SELECT
PRESET
CLOCK/
1
2
(R-CH)
(L-CH)
R-CH
GND
GND
L-CH
POWER AMP
Q353,354
+B
2
1
Q151,251
MUTING
Q351,352
MUTING CONTROL
Q901,902
REGULATOR CONTROL
+6V REGULATOR
+6V REGULATOR
(AC IN)
A
1
5
B+ SWITCH
TIMEZONE
POWER UNIT
(TEST CD)
DATE
D401,402
(ILLUMINATION)
(Page 21)
(Page 21)
(Page 21)
(Page 23)
Ver. 1.1
Note: Refer to “COLOR VARIATION” in the “SERVICING NOTES”
(page 3) about color variation of destination.
ICF-CD7000
26
26
ICF-CD7000
•
Waveforms
– CD Board –
qa
IC2
w;
(XOUT)
500 mV/DIV, 5
µ
s/DIV
13.3
µ
s
0.9 Vp-p
ws
IC801
ug
(X2)
(CD play mode)
1 V/DIV, 100 ns/DIV
239 ns
3.1 Vp-p
2
IC701
ek
(XO)
(CD play mode)
1 V/DIV, 20 ns/DIV
59.2 ns
3.2 Vp-p
3
IC701
rk
(TEO)
(CD play mode)
200 mV/DIV, 5 ms/DIV
Approx.
400 mVp-p
400 mVp-p
1
IC701
9
(FEO)
(CD play mode)
50 mV/DIV, 5 ms/DIV
Approx.
60 mVp-p
60 mVp-p
wa
IC801
ua
(XT2)
1 V/DIV, 10
µ
s/DIV
30.4
µ
s
3.5 Vp-p
– TU Board –
– MAIN Board –
•
IC Block Diagrams
– CD Board –
IC701 BU9532KS2
AVDD1
1
DGND
39
XO
38
DVDD
36
XI
37
XPLCK
35
BUSY
32
MONI1
34
MONI0
33
RF SIGNAL
GENERATOR
SERVO
SIGNAL
GENERATOR
DIGITAL
SERVO
FILTER
FILTER
x8 OVER
SAMPLING
DIGITAL
FILTER
1 bit D/A
CONVERTER
APC
AC
BD
VBIAS
E
F
F
2
3
4
5
6
FEN
FEO
FEO
8
9
PKC
7
BTC 10
ASY 13
PD
LD
11
12
PLL
PCO
FCO
14 15
DIGITAL SERVO
SIGNAL
PROCESSOR
FDOUT
JUMPO
17 18
TDOUT
SDIN
19 20
CLK88
LON
23 24
RESETX
31
R/W
30
MCK
27
DOUT
29
DIN
28
CLK
SUBSYQ
25 26
DIGITAL
SIGNAL
PROCESSOR
COMMAND
INTERFACE
INTERFACE
16k SRAM
SDOUT
CLVOUT
21
EQO
52
RFI
CAGC
51 50
TEN
49
TEO
48
AGND2
RDACO
44
AVDD2
40
43
VCDAC
42
LDACO
41
SC
TZCRFM
47 46
RFRPRFM
45
22
AGND1
16
27
ICF-CD7000
IC781 BA5826SFP-E2
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
LEVEL
SHIFT
MUTE
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULATOR
VCC
VCC
– TU Board –
IC1 TA2149BN
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
28
ICF-CD7000
IC2 LC72137M-TLM-E
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
– MAIN Board –
IC802 TK11140CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
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