Sony ICF-CD523 Service Manual ▷ View online
25
ICF-CD523
•
Waveforms
– MAIN Board –
1
IC401
yk
(X2) (CD play mode)
1 V/DIV, 100 ns/DIV
238 ns
3.9 Vp-p
2
IC401
us
(XT2)
1 V/DIV, 10
µ
s/DIV
30.5
µ
s
4.1 Vp-p
3
IC51
1
(XOUT)
(Radio on mode)
500 mV/DIV, 5
µ
s/DIV
13.3
µ
s
1.1 Vp-p
4
IC501
1
(FEO)
(CD play mode)
100 mV/DIV, 500 ns/DIV
Approx.
140 mVp-p
140 mVp-p
10.4
µ
s
5.6 Vp-p
5
IC551
qf
(CLKO)
(CD play mode)
2 V/DIV, 5
µ
s/DIV
6
IC501
ed
(RFO)
(CD play mode)
500 mV/DIV, 500 ns/DIV
1.2
±
0.3 Vp-p
7
IC501
rg
(TEO)
(CD play mode)
100 mV/DIV, 500 ns/DIV
Approx.
110 mVp-p
110 mVp-p
8
IC551
wa
(MDP)
(CD play mode)
500 mV/DIV, 2
µ
s/DIV
10.1
µ
s
1.2 Vp-p
22.7
µ
s
5.1 Vp-p
9
IC551
el
(LRCK)
(CD play mode)
2 V/DIV, 10
µ
s/DIV
q;
IC551
rd
(BCK)
(CD play mode)
2 V/DIV, 200 ns/DIV
472 ns
5.7 Vp-p
qa
IC551
qa
(XTAO)
(CD play mode)
2 V/DIV, 20 ns/DIV
59.4 ns
6.4 Vp-p
26
ICFCD523
•
IC Block Diagrams
– MAIN Board –
IC1
CXA1238M-T6
IC51
BU2614FS
VCO
REGULATOR
FM FRONT-END
AM FRONT-END
MPX
REGULATOR
MONO/STEREO
SELECT
DECORD
AMP
MUTING
AUTO
BLEND
TUNING
INDICATOR
AM IF/
DET
FM IF/
DISCRI
RIPPLE
FILTER
BAND-PASS
MUTE
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
L-CH OUT
VCC
R-CH OUT
RIPPLE FILTER
AGC AFC1
10
AGC AFC2
13
FM IF IN
14
AM IF IN
15
BAND SELECT
11
GND
12
TUNE IND
1/2
COUNTER
1/2
COUNTER
PD1
PD2
FM/AM FE OUT
FM GND
FM RF IN
AM RF IN
FM RF
REG
FM OSC
AFC
AM OSC
MUTE
FM DISCRI
GND
PLL LPF2
MPX REG
VCO
FM IN
PD1
VSS
VDD2
VDD1
AM IN
P2
IF-IN
XOUT
XIN
CE
CK
DA
CD
P0
P1
16
12
13
14
15
8
9
10
11
4
5
6
1
2
3
7
IF
COUNTER
OUTPUT
CONTROL
I/O CONTROL
REGISTER
MAIN CONTROL
PRESCALLER
PHASE
DETECT
1
CH2 OUTPUT
2
VCC
4
NC
11
NC
12
PRE GND
5
POWER GND
3
CH1 OUTPUT
OUTPUT
AMP
6
STBY
OUTPUT
AMP
INPUT
AMP
STANDBY
SWITCH
7
FILTER
RIPPLE
FILTER
8
P.P
9
CH1 INPUT
10
CH2 INPUT
POP NOISE
PREVENTION
BLOCK
REF
AMP
INPUT
AMP
TSD
PROTECTOR
IC351
LA4629
27
ICF-CD523
IC501
CXA1992BR
FZC
VC
TDFCT
TZC
ATSC
TEI
LPFI
TEO
VEE
EI
E
F
FE
BIAS
SL P
SL M
SL O
ISET
VCC
XRST
DATA
DATA
XLT
CLK
CLK
LOCK
SENS2
SENS1
C. OUT
VCC
DFCTO
IFB1 – IFB6
BAL1 – BAL4
TOG1 – TOG4
FS1 – FS4
TG1 – TG2
TM1 – TM7
PS1 – PS4
TGH
TGL
BALH
BALL
ATSC
DFCT
TM1
TG1
FS2
IFB1 – IFB6
VCC
VEE
VCC
VEE
VEE
PD 2
I-V AMP
FOK
CC2
CC1
CB
CP
RF O
RF I
RFTC
PD2
PD1
PD
LD
RF M
TA
O
TA
M
FSET
TG2
TGU
SRCH
FEO
FEI
FDFCT
FGD
FLB
FE O
FE M
TZC
FZC
FOL
FOH
MIRR
LDON
LPCL
LPC
TGFL
DFCT1
CC1
1
2
3
4
5
6
7
8
9
10
26
25
24
23
22
21
21
20
19
18
17
16
15
14
40
41
42
43
44
45
46
47
48
49
50
51
52
39
PD 1
I-V AMP
38
PD
AMP
37
LD
AMP
LASER
POWER
CONTROL
FOCUS BIAS
WINDOW
COMPARATOR
FOCUS ERROR
AMP
F I-V
AMP
AMP
E I-V
AMP
AMP
TGFL
TRACKING GAIN
WINDOW
COMPARATOR
E-F BALANCE
WINDOW
COMPARATOR
ATSC
WINDOW
COMPARATOR
TZC
COMPARATOR
TRACKING PHASE
COMPENSATION
CENTER
VOLTAGE
GENERATOR
FZC
COMPARATOR
FOCUS PHASE
COMPENSATION
CHARGE UP
FSET
ISET
IIC DATA REGISTER, INPUT SHIFT REGISTER,
ADDRESS DECODER, SENSE SELECTOR,
OUTPUT DECODER
TTL
↓
IIL
IIL
↓
TTL
IIL
↓
TTL
RF SUMMING
AMP
FOCUS OK
COMPARATOR
PEAK/BOTTOM
HOLD
PEAK/BOTTOM
HOLD
DEFECT
AMP
MIRR
COMPARATOR
36
34
31 30
29
28
27
35
33 32
BAL1 – BAL4
TM6
TM2
VCC
VEE
TM5
11
12
13
TG2
TM4
VCC
VEE
TM3
FS1
VCC
VEE
TOG1 – TOG4
TM7
FS4
DFCT
+
–
+
–
28
ICFCD523
IC551
CXD2589Q
PWM
PWM
1
2 3
4 5 6
12
13
14
15 16 17
19 20
34
27
24
23
25
21
61
63
64
66
67
68
69
70
71
72
73
74
75
77
78
79
80
OSC
62
65
76
7 8 9
10
11
18
22
28
26
33
32
31
30
29
36
35
40
39
38
37
45
44
43
42
41
50
49
48
47
46
55
54 53 52 51
59 58 57
56
60
EFM
DEMODULATOR
ERROR
CORRECTOR
16k
RAM
D/A
INTERFACE
CLOCK
GENERATOR
SERVO
AUTO
SEQUENCER
CPU
INTERFACE
DIGITAL
OUT
SUB CODE
PROCESSOR
3rd-ORDER
NOISE SHAPER
OVER SAMPLING
DIGITAL FILTER
SERIAL-IN
INTERFACE
DIGITAL
CLV
OSC
DIGITAL
PLL
ASYMMETRY
CORRECTOR
LRCKI
LRCK
ASYO
ASYI
BIAS
RF
AVDD
CLTV
AVSS
FILI
FILO
PCO
V16M
VCTL
VCTL
VCKI
VPCO1
TES1
TES0
PWMI
MDP
VDD
SYSM
AVSS
AVDD
XTAI
XVDD
AVSS
LOUT1
AIN1
AOUT1
XTAO
XVSS
AVSS
LOUT2
AIN2
AOUT2
AVDD
AVSS
XRST
XRST
VDD
VSS
EXCK
SBSO
SCOR
WFCK
ENPHI
EMPH
DOUT
C4M
XTSL
C2PO
GFS
XPCK
XUGF
VDD
VSS
BCKI
BCK
PCMDI
PCMD
VSS
LMUTE
RMUTE
SQCK
SQSO
SENS
DATA
XLAT
CLOK
SEIN
CNIN
DATO
XLTO
CLKO
SPOA
SPOB
XLON
FOK
VDD
VSS
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