Sony CHC-TB10 / CHC-TB20 / HCD-TB20 Service Manual ▷ View online
49
49
7-20. Printed Wiring Board POWER Section
IC911
E
E
AEP,UK,KR
MX
E
AEP,UK,
MX,KR
MX,KR
E
AEP,UK,
MX,KR
MX,KR
D
AEP,UK,
MX,KR
MX,KR
TO
TRANS
BOARD
(Page 39)
(Page 47)
(Page 47)
• See page 27 for Circuit Boards Location.
50
50
HCD-TB20
• WAVEFORMS
– BD SECTION –
– MAIN SECTION –
4
IC101
wh
(MDP)
2
IC101
ra
(TE)(CD Play mode)
1
IC101
ta
(RFAC)(CD Play mode)
3
IC101
el
(FE)(CD Play mode)
100 mV/DIV, 20 s/DIV
1 V/DIV, 4 s/DIV
100 mV/DIV, 20 s/DIV
500 mV/DIV, 1 s/DIV
2.5 Vp-p
0.3 Vp-p
0.4 Vp-p
1.1 Vp-p
7.5 s
7-21. IC Pin Function Description
• IC401 M30622MGN-A00FP MASTER CONTROL (MAIN BOARD)
Pin No.
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
39
40
41
42
43
44
45
46
47
48
49
50
I/O
–
I
O
I
O
O
O
–
–
I
O
I
O
–
I
–
I
I
I
I
O
O
O
O
I
O
O
O
O
O
–
I
O
I
O
O
O
I
O
I
O
O
O
O
O
O
O
O
O
I
Pin Name
NC
RDS DATA
LCD RS
SIRCS
LCD DATA
LCD STB
LCD SCK
BYTE
CNVSS
XCIN
XCOUT
RESET
XOUT
VSS
XIN
VCC
NMI
RDS INT
SCOR
AC CUT
ST MUTE
ST CE
ST DOUT
PWM3
ST DIN
PWM2
ST CLK
PWM1
IIC CLK
IIC DATA
NC
SQ DATA IN
SQ CLK
STEREO
CD DATA
XLT
CD CLK
TC PLAY
TC MUTE
TC LID
REC MUTE
BIAS
TC RELAY
ALC
STB LED
LED3
LED2
LED1
LED CONT
HP DETECT
Description
Not used
RDS DATA signal input
LCD reset signal output
Remote control receiver data signal input
LCD DATA signal output
LCD STB signal output
LCD clock signal output
External data bus width select input (connected to ground)
Processor mode switch (connected to ground)
Sub clock input
Sub clock output
System reset input
Main system clock output
Ground
Main system clock input
Power supply (+3.3V)
Not used (connected to Vcc)
RDS interrupt signal input
CD subcode sync detect signal input
AC detect signal input
Tuner muting control signal output
Tuner chip enable signal output
Tuner data signal output
BU PWM3 signal output
Tuner data signal input
BU PWM2 signal output
Tuner clock signal output
BU PWM1 signal output
IIC clock output
IIC data output
Not used (open)
CD SQ data input
CD SQ clock output
STEREO signal input (L=ON,H=OFF)
CD data output
CD latch signal output
CD clock output
Tape deck play switch signal input
Tape deck line muting control signal output
Tape deck lid detect signal input
REC muting control signal output (H=ON,L=OFF)
BIAS control signal output (H=ON,L=OFF)
Tape deck relay control signal output (H=ON,L=OFF)
ALC control signal output (L=ON,H=OFF)
Standby LED control signal output (H=ON,L=OFF)
LED control signal output (not used)
LED control signal output
LED control signal output
LED control signal output for LED 1 to 3
Headphone detect signal input
5
IC401
qa
(XCOUT)
6
IC401
qd
(XOUT)
3.1 Vp-p
30.5 s
2.7 Vp-p
1 V/DIV, 40 ns/DIV
62 ns
1 V/DIV, 10 s/DIV
– DECK SECTION –
12.1 Vp-p
12.8 s
7
Q642 collector
5 V/DIV, 4 s/DIV
51
HCD-TB20
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78 to 80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
O
I
I
O
–
I
I
O
O
O
–
–
O
–
O
O
O
O
I
I
I
I
I
I
–
I
I
–
O
O
O
O
O
I
O
O
–
I
I
I
I
I
I
–
I
–
–
–
Pin Name
BACK LIGHT
VOL B
VOL A
LDON
NC
SENS
TUNED
TC TRG
CAPM CONT
XRST
NC
VCC
SOFT TEST
VSS
CD POWER
CD MUTE
LOAD OUT
LOAD IN
OPEN
CLOSE
T SENS1
T SENS2
DISPLAY KEY
POWER KEY
NC
T SENS3
DISC SENS
NC
LINE MUTE
STAND BY RELAY
FAN CONT
STK POWER
FRONT RELAY
PROTECT
AMP DATA
AMP CLK
(VCD DET)
TC SHUT
TC HALF/REC
MODEL IN
SPEC IN
KEY3
KEY2
AVSS
KEY1
VREF
AVCC
NC
Description
Back light LED control signal output
Volume signal input from the rotary encoder
Volume signal input from the rotary encoder
LDON signal output to IC103(CXA2581N)
Not used (open)
SENS signal input from IC101(CXD3017Q)
TUNED detect signal input (L=ON,H=OFF)
Tape deck trigger control signal output (H=ON,L=OFF)
Capstan motor control signal output (H=REV,L=FWD,L=STOP)
CD reset signal output
Not used
Power supply (+3.3V)
Test point (soft check out)
Ground
CD power control signal output (H=ON,L=OFF)
CD muting control signal output
Loading motor control signal output
Loading motor control signal output
Tray open detect signal input
Tray close detect signal input
CD table detect signal input
CD table detect signal input
DISPLAY key detect signal input
Power key detect signal input
Not used
CD table detect signal input
Disc detect signal input
Not used
Line muting control signal output (H=ON,L=OFF)
Standby relay control signal output
Fan motor control signal output (not used)
Power amplifier control signal output (H=ON,L=OFF)
Front speaker relay control signal output (H=ON,L=OFF)
Speaker protect signal input (L=ON,H=OFF)
Data output to the sound processor
Clock output to the sound processor
Not used
Tape deck reel pulse signal input
Tape deck half detect signal input
Model input terminal
Version select input terminal
Key input signal from the function key
Key input signal from the function key
Analog ground
Key input signal from the function key
Analog reference voltage
Analog power supply
Not used
52
HCD-TB20
IC101 CXD3017Q
1
2
3
10 11 12 13 14 15 16 17 18
19
20
60
59 58 57
56
55
54
52
51
50
49
48
47
46 45 44
53
21
39
40
41
42
43
22
23
79
24
26
25
28
27
29
30
31
32
35
36
37
38
33
34
80
62
61
77
78
78
75
76
76
73
74
72
71
70
69
66
65
64
63
68
67
4
5
6
7
8
9
D/A
Interface
Digital
PLL
CPU
Interface
Digital
OUT
Serial-In
Interface
Over Sampling
Digital Filter
Timing
Logic
PWM
3rd-Order
Noise Shaper
PWM
Asymmetry
Corrector
A/D
Converter
OP Amp
Analog SW
Clock
Generator
Digital
CLV
MIRR
DFCT
FOK
SERVO DSP
FOCUS
SERVO
SERVO
TRACKING
SERVO
SELED
SERVO
EFM
Demodurator
Servo Auto
Sequencer
SERVO
Interface
Error
Corrector
16K
RAM
Sub Code
Processor
PWM
GENERATOR
FOCUS PWM
GENERATOR
TRACKING
PWM
GENERATOR
SLED PWM
GENERATOR
SQSO
SQCK
XRST
DATA
XLAT
CLOK
SENS
SCLK
VDD
SPOA
SPOB
XLON
XPCK
SCOR
COUT
MIRR
DFCT
FOK
LOCK
MDP
SSTP
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
TEST
TES1
VC
FE
SE
TE
CE
RFDC
ADIO
IGEN
ASYO
ASYI
BIAS
RFAC
CLTV
FILO
FILI
PCO
DOUT
XTAI
XTAO
AVDD1
AOUT1
AIN1
LOUT1
LOUT2
AIN2
AOUT2
LMUT
XVSS
RMUT
SYSM
ATSK
WFCK
XUGF
GFS
C2PO
VSS
XTSL
AVDD
AVSS
AVSS
AVDD
VSS
VDD
LRCK
PCMD
BCK
EMPH
XVDD
AVSS1
AVSS2
AVDD2
7-22. IC Block Diagrams
– BD BOARD –
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