Read Sony CHC-TB10 / CHC-TB20 / HCD-TB20 Service Manual online
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
Click on the first or last page to see other CHC-TB10 / CHC-TB20 / HCD-TB20 service manuals if exist.