Sony ICF-CDK50 Service Manual ▷ View online
ICF-CDK50
ICF-CDK50
25
25
6-11. SCHEMATIC DIAGRAM - PANEL Section -
S414
S415
R421
R418
S409
S410
S411
S412
S413
R440
R441
R437
R436
R442
R422
R423
R428
LCD401
JC411
R43
0
R431
JC412
R401 R402
R403
R404
R405
S401
S402
S403
S404
S405
S406
S408
R407
R408
R409
R410
C410
IC401
R426
R427
C406
C407
S417
CN409
R424
R425
R419
Q404
D406
JC408
W403
W404
W406
R415
R420
S416
R406
D404
S407
S418
1k
220
470
220
1k
1k
2.2k
470
220
1k
0
470
470
0
470
220
1k
1k
2.2k
220
1k
1k
2.2k
0.1
NJL23H400A
1k
1k
100
100
4P
1k
1k
470
RT1N434C
-TP-1
L-34HD
0
1k
2.2k
470
L-7104FGCK
VOL
JO
G-
VOL
JO
G+
uCON-GND
1
3
16
1
1
11
1
7
1
3
1
4
D-GND
TIMER JOG
-
TIMER JOG+
KEY1
PRESET TUNING
3
5
4
2
1
MEGA BASS
CLOCK/DATE
LED DRIVE
(TIMER)
D_TIMER_LED
VCC
SEG16
SEG15
SEG14
SEG13
SEG1
2
SEG1
1
SEG10
SEG0
9
SEG08
SEG0
7
SEG0
6
SEG0
5
SEG04
SEG0
3
SEG02
SEG01
SEG00
COM3
COM
2
COM
1
COM0
KEY0
GND
KEY3
KEY2
KEY1
TIME_JOG-
VCC
RMC
RMC
GND
VCC
1
3
W401
OUT
GND
VCC
REMOTE
CONTROL
TIME ZONE
ROTARY
ENCODER
TIMER
PUSH
START/STOP
LIQUID CRYSTAL DISPLAY
VOLUME
ROTARY
ENCODER
LIGHT
LCD BACK
AUDIO IN
MODE
OPEN/CLOSE
CD
OFF
RADIO
BAND
TUNE/TRACK
1
3
VOL_JOG-
VOL_JO
G+
TIMER_JOG+
RECEIVER
(Page 22)
(Page 22)
(Page 22)
ICF-CDK50
ICF-CDK50
26
26
• Waveforms
– CD Board –
– CD Board –
• IC Block Diagrams
– CD Board –
– CD Board –
IC701 BU9532KS2
IC701 (FEO)
(CD play mode)
(CD play mode)
100 mV/DIV, 500 ns/DIV
Approx.
170 mVp-p
170 mVp-p
IC701 SL (TEO)
(CD play mode)
(CD play mode)
100 mV/DIV, 500 ns/DIV
Approx.
110 mVp-p
110 mVp-p
IC701 FL (XO)
1 V/DIV, 20 ns/DIV
59.1 ns
3.4 Vp-p
RB
IC2 X (XOUT)
500 mV/DIV, 5
μs/DIV
13.3
μs
0.9 Vp-p
XT
IC801 RL (X2)
1 V/DIV, 100 ns/DIV
XB
IC801 RH (XT2)
1 V/DIV, 20
μs/DIV
30.6
μs
2.28 Vp-p
240 ns
1.96 Vp-p
– TU Board –
– MAIN Board –
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
x8 OVER
SAMPLING
DIGITAL
FILTER
1 bit D/A
CONVERTER
APC
AC
BD
BD
VBIAS
E
F
F
2
3
4
5
6
3
4
5
6
FEN
FEO
8
9
9
PKC 7
BTC 10
ASY 13
PD
LD
11
12
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
16k SRAM
SDOUT
CL
VOUT
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
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
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
REGULA
TOR
VCC
VCC
IC702 BA5826SFP-E2
– 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
ICF-CDK50
27
IC302 UTC8227 S
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
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
DA
TA
SHIFT
REGISTER
LA
TCH
1/2
17
18
– MAIN Board –
IC301 BD3499FV-E2
1
A1
18 BCB1
17 BCA1
16 BCA2
17 BCA1
16 BCA2
20 SB2
19 OUT2
22 SB1
21 SR
21 SR
24 VCC
23 OUT1
26 SDA
25 SCL
25 SCL
28 FIL
27 GND
27 GND
15 BCB2
2
A2
3
B1
5
C1
6
C2
4
B2
11
VOL1
12
VOL2
13
TC2
14
TC1
7
D1
8
D2
9
SEL2
10
SEL1
INPUT
SELECTOR
TREBLE/
BASS
INVERTER
VOLUME
INPUT
GAIN
SURROUND
PC BUS
LOGIC
IC802 TK11140CSCL-G
IC805 TC7WZ74FU (TE12R)
1
7
8
9
10
11
12
3
4
4
+
–
+
–
–
VCC1
CH-1
CH-2
OUTPUT1
BOOT STRAP1
PRE GND
NF1
INPUT1
VCC2
OUTPUT2
BOOT STRAP2
RIPPLE
NF2
INPUT2
OUTPUT2
BOOT STRAP2
RIPPLE
NF2
INPUT2
2
5
6
6
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
1
2
3
4
5
6
7
8
9
NC
OUTPUT
2
Vcc
GND
NC
INPUT
2
INPUT
1
NC
MOTOR
DRIVE
MOTOR
DRIVE
REG
SWITCH
SWITCH
OUTPUT1
ICF-CDK50
28
• IC Pin Function Description
MAIN BOARD IC801 uPD778FD483GC-GAD-AX (SYSTEM CONTROLLER)
MAIN BOARD IC801 uPD778FD483GC-GAD-AX (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-R-MUTE
O
Tuner muting on/off control signal output to the FM/AM PLL "H": muting on
2
I-AC-IN
I
Failure of power supply detection signal input terminal
3
I-R-COUNT
I
Serial data input from the FM/AM PLL
4
O-R-CLK
O
Serial data transfer clock signal output to the FM/AM PLL
5
O-R-DATA
O
Serial data output to the FM/AM PLL
6
O-R-CE
O
Chip enable signal output to the FM/AM PLL "L": active
7
O-V-CLK
O
Serial data transfer clock signal output to the electrical volume
8
O-V-DATA
O
Serial data output to the electrical volume
9
I-RMC
I
Remote control signal input from the remote control receiver
10
I-C-OPEN
I
Detection input from the tray open/close detect switch
"L": when tray is open, "H": when tray is close
"L": when tray is open, "H": when tray is close
11 to 13
VLC2 to VLC0
-
Not used
14
I-RESET
I
System reset signal input from the reset signal generator
"L": reset For several hundreds msec. after the power supply rises, "L" is input, then it chang-
es to "H"
"L": reset For several hundreds msec. after the power supply rises, "L" is input, then it chang-
es to "H"
15
XT2
O
Sub system clock output terminal (32.768 kHz)
16
XT1
I
Sub system clock input terminal (32.768 kHz)
17
FLMD0
-
Not used
18
X2
O
Sub system clock output terminal (4.19 MHz)
19
X1
I
Sub system clock input terminal (4.19 MHz)
20
REGC2.4V
-
Not used
21
VSS
-
Ground terminal
22
VDD
-
Power supply terminal (+3.3V)
23
O-R-ON
O
Tuner power on/off control signal output terminal "H": power on
24
O-CD-ON
O
CD power on/off control signal output terminal "H": CD power on
25
I-C-LIM SW
I
Detection input from the sled limit-in detect switch
The optical pick-up is inner position when "L"
The optical pick-up is inner position when "L"
26
I-C-BUSY
I
Busy signal input from the CD DSP
27
FM/AM SHIFT
O
Shift point terminal for oscillation frequency change
28
ATS1
I
ATS clock signal input teminal
29
ATS2
I
ATS data input teminal
30
TIMER JOG+
I
Jog dial pulse input from the rotary encoder (TIMER)
31
VOL JOG+
I
Jog dial pulse input from the rotary encoder (VOLUME)
32
O-TIMER LED
O
LED drive signal output terminal
33
I-C-CLOSE
I
Detection input from the tray open/close detect switch
"L": when tray is close, "H": when tray is open
"L": when tray is close, "H": when tray is open
34
TRAY CLOSE
O
Motor drive signal output to the disc tray open/close motor driver "H": table in
35 to 37
NC
-
Not used
38 to 54
SEG16 to SEG0
O
Segment drive signal output to the liquid crystal display
55 to 58
COM3 to COM0
O
Common drive signal output to the liquid crystal display
59
AVREF
-
Power supply terminal (+3.3V) (for A/D converter)
60
AVSS
-
Ground terminal (for A/D converter)
61
NC
-
Not used
62
I-BACTHK
I
Battery voltage detection input terminal (A/D input)
63
I-VRSN
I
Destination setting terminal (A/D input)
64 to 67
I-KEY3 to I-KEY0
I
Front panel key input terminal (A/D input)
68
TRAY OPEN
O
Motor drive signal output to the disc tray open/close motor driver "H": table out
69
TIMER JOG-
I
Jog dial pulse input from the rotary encoder (TIMER)
70
VOL JOG-
I
Jog dial pulse input from the rotary encoder (VOLUME)
71
O-BATCHK
O
Battery voltage detection output terminal
72
BUZZER
O
Buzzer drive signal output terminal Not used
73
I-C-SBSYQ
I
Subcode Q data (80 bit serial) input from the CD DSP
74
O-P-CON
O
Output control signal output to the power amplifi er
75
O-A-MUTE
O
Audio muting on/off control signal output terminal "H": muting on
76
O-C-RSTX
O
System reset signal output to the CD DSP "L": reset
77
O-C-R/W
O
Data read/write selection signal output to the CD DSP
78
O-C-DATA
O
Serial data output to the CD DSP
79
I-C-DATA
I
Serial data input from the CD DSP
80
O-C-MCK
O
Serial data transfer clock signal output to the CD DSP
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