Sony HCD-VX222 / MHC-VX222 Service Manual ▷ View online
41
41
HCD-VX222
6-20. SCHEMATIC DIAGRAM – VIDEO CD SECTION (1/2) –
CN301
3P
PANEL
BOARD
CN713
(Page 37)
M30620MCA-B22FP
1
3
33
MAIN BOARD
(5/5)
CN102
1
2
3
4
5
IC B/D
IC B/D
IC B/D
G
(Page 42)
E
BD BOARD
CN101
(Page 27)
H
CN501
• See page 21 for Waveforms.
• See page 46 for IC Pin Function Description.
• See page 51 for IC Block Diagrams.
• See page 46 for IC Pin Function Description.
• See page 51 for IC Block Diagrams.
42
42
HCD-VX222
6-21. SCHEMATIC DIAGRAM – VIDEO CD SECTION (2/2) –
IC506
MT23C020-H001S
C561
6p
50V
CH
10p
IC B/D
6
7
8
9
q;
qa
qs
qd
qf
(Page 41)
• See page 21 for Waveforms.
• See page 51 for IC Block Diagrams.
• See page 51 for IC Block Diagrams.
43
HCD-VX222
6-22. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD (4/5) IC401 M30622MAA-A98FP (MASTER CONTROL)
• MAIN BOARD (4/5) IC401 M30622MAA-A98FP (MASTER CONTROL)
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
O
O
I
I
O
O
O
—
—
I
O
I
O
—
I
I
I
I
I
I
I
O
I
I
O
O
I
O
O
O
—
I
I
I
O
—
O
O
O
O
O
O
O
O
O
I
I
I
I
—
Description
Serial data output the display control.
Serial clock output from main controller.
Busy signal input from the display control. “L” : busy
Pemoto commander input.
Data signal output for IC301(BH3878KS2)
Latch signal output for IC301(BH3878KS2)
Clock signal output for IC301(BH3878KS2)
Connected to ground.
Connected to ground.
SUB SYSTEM CLOCK input.(32.768MHz)
SUB SYSTEM CLOCK output.(32.768MHz)
System reset input.
MAIN SYSTEM CLOCK output.(16MHz)
Connected to ground.
MAIN SYSTEM CLOCK input.(16MHz)
Power supply.(+5V)
PULL UP.(EVER+5V)
AC CUT ON(L)/OF(H) CHECK.
CD Q-data request signal input.
RDS interrupt signal input.
RDS data signal input.
Tuner mute signal output.
STEREO detect signal input.L=ON,H=OFF
TUNER detect signal input.L=ON,H=OFF
TUNER chip eneble output.
TUNER data output.
TUNER data input.
TUNER clock signal output.
I2C SCL output.
I2C SDA output.
Not used.
Subcode Q data input(CD data).
Subcode Q clock input(CD clock). (Not used)
BD condition signal input. (Connected to ground)
CD data output. (Not used)
Not used.
CD clock output. (Not used)
CD-POWER ON/OFF signal output.H=ON,L=OFF
Not used (open).
HOLD signal output. (Not used)
Micom reset signal output to the display control. “L” : reset
CD latch signal output. (Not used)
CD reset signal output.
Loading motor control signal output (Loading).
Loading motor control signal output (un Loading).
Tray open detect signal input.
Tray close detact signal input.
Pick-up up/down detect signal input.
CD table detect signal input.
Not used.
Pin Name
S-OUT
S-CLK
S-BSY
REMOTE IN
3878-DAT
3878-LAT
3848-CLK
BYTE
CN VSS
XC IN
XC OUT
RESET
X OUT
VSS
X IN
VCC
NMI
AC-CUT
SCOR
RDS-INT
RDS-DATA
ST-MUTE
STEREO(IN)
TUNED
ST-CE
ST-DOUT
ST-DIN
ST-CLK
I2C CLK
I2C DATA
NO USE
SQ-DAT IN
SQ-CLK
SENS
CD-DAT OUT
CAN’T-USE
CD-CLK
CD-POWER
CLOCK-OUT
HOLD
M-RESET
XLT
XRST
LOAD-IN
LOAD-OUT
OPEN
CLOSE
UP/DOWN
T-SENS
GAME/DVD
44
HCD-VX222
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
—
—
—
—
—
—
O
O
O
O
O
I
I
—
O
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
O
I
I
I
—
I
—
O
—
—
I
Description
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Surround control signal output.
Surround control signal output.
Surround control signal output.
A deck trigger control signal output.H=ON,L=OFF
B deck trigger control signal output.H=ON,L=OFF
Power supply.(+5V)
Not used.
Connected to ground.
Capstan motor REV/FWD/STOP control signal output.H=REV,L=FWD/STOP
Detection input from the deck-B rec forward detect switch. “L” : rec
Detection input from the deck-B rec reverse detect switch. “L” : rec
A deck hafe detect signal input.
B deck hafe detect signal input.
A deck play detect signal input.
B deck play detect signal input.
AMS signal input.L=ON,H=OFF
DISPLAY KEY control signal output.
POWER KEY control signal output.
BIAS ON/OFF signal output.H=ON,L=OFF
Playback deck A/B select signal output.H=High,L=Normal
Tape deck relay ON/OFF signal output.H=ON,L=OFF
PB mute ON/OFF signal output .H=ON,L=OFF
REC mute ON/OFF signal output .H=ON,L=OFF
Serial data latch pulse output to BH3878KS2 (IC301)
Serial data latch pulse output to BH3878KS2 (IC301)
Serial data latch pulse output to BH3878KS2 (IC301)
Line mute signsl output.L=ON,H=OFF
Power amplifier mute ON/OFF signal output.H=ON,L=OFF
Speaker protect signal input.L=ON,H=OFF
STANDBY relay control signal output.
Rear speaker relay control output.
Front speaker relay control output.
A deck reel pulse detect signal output.
B deck reel pulse detect signal output.
SP/VACS (tape) select signal input.
Destination setting terminal.
Version select signal input.
Not used
Tape recording level input.
Connected to ground.
POWER ON/OFF signal output.H=ON,L=OFF
Analog reference voltage.
Power supply.(+5V)
Serial data input the display control.
Pin Name
NO USE
CENT-MUTE
REAR-MUT
494-DAT
494-CLK
494-LT
SUR1
SUR2
SUR3
A-TRG
B-TRG
VDD
SOFT TEST
VSS
CAMP-CONT
B-REC FWD
B-REC REW
A-HAFE
B-HAFE
A-PLAY
B-PLAY
AMS-IN
DISPLAY KEY
POWER-KEY
BIAS
PB-A/B
TC-RELAY
PB-MUT
REC-MUT
SP-LATA
SP-LATB
SP-LATC
LINE-MUT
STK-MUT
PROTECT
STB-RELAY
REAR-RELAY
FRONT-RELAY
A-SHUT
B-SHUT
SP/VACS
MODE IN
SPEC-IN
VIDEO SW2
VACS
AVSS
POWER-KEY
AV-REF
AVCC
S-IN
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