Sony MHC-W555 / STR-W555 Service Manual ▷ View online
– 55 –
• Display section
IC505 MC14053BCP
2
3
14
1
f04
13 f
12 VCC
11 NC
10 NC
15 f03
5
GND
6
BIAS
C
7
NC
8
NC
9
NC
4
16 f02
17 f01
18 RESET
RESET
C
PREF
LINE
NF
LINE
IN
REFFERENCE
CURRENT
BPF
DET
BPF
DET
BPF
DET
BPF
DET
DET
RESET
Bias
1
2
3
4
5
6
7
8
B1
B0
C.COM
CO
INH
VEE
VSS
VDD
B.COM
A.COM
A1
A0
A
B
C
C1
9
10
11
12
13
14
15
16
OPEN
OPEN
OPEN
• Panel/Motor section
IC891 LB1641
IC506 BA3833F
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
– 56 –
Pin No.
Pin Name
I/O
Function
1
CLK
O
Not used
2
LEVEL A
O
Surround level A signal output
3
LEVEL B
O
Surround level B signal output
4
PROLOGIC RLY
O
Not used
5
DBFB B2
O
DBFB level 2 signal output
6
DBFB B1
O
DBFB level 1 signal output
7
TA MUTE
O
Mute signal output
8
GND
—
Ground
9
TEST
—
Test terminal (Connected to ground)
10
X2
O
11
X1
I
12
VDD
—
Power supply (+5V)
13
XT2
O
14
XT1
I
15
RESET
I
Reset signal input
16
RDS CLK
I
RDS clock input
17
RDS DATA
I
RDS data input
18
VOL A
I
19
VOL B
I
20
JOG A
I
21
JOG B
I
22
SPEANA CONT
O
Spectrum analyzer control output
23
VDD
—
Power supply (+5V)
24
A VDD
—
Analog power supply (+5V)
25
VACS
I
Audio input for VACS control
26
SPEANA0
I
27
SPEANA1
I
28
KEY0
I
29
KEY1
I
30
KEY2
I
31
KEY3
I
32
ACCUT
I
Back up signal input
33
A VSS
—
Analog ground
34
GND
—
Ground
35
FL DATA
O
FL data output
36
FL CLK
O
FL clock output
37
FL LAT
O
FL latch output
38
FL RESET
O
FL reset output
39
GND
—
Ground
40
VSS
—
Ground
• Abbreviation
FL : Fluorescent indicator tube
5-21. IC PIN FUNCTION
• IC501 SYSTEM CONTROL (uPD780016AYGF-012-3BA)
X’tal (5MHz)
X’tal (32kHz)
Rotary encoder (VOLUME) pulse input
Rotary encoder (MULTI JOG STATION) pulse input
Spectrum analyzer data input
Key data input
– 57 –
Pin No.
Pin Name
I/O
Function
41
AV IN
I
AV INPUT (VIDEO 2) switch input
42
SENSOR IN
I
Sliding (panel) sensor signal input
43
SIRCS IN
I
Remote sensor signal input
44
SPEANE RST
O
Spectrum analyzer reset output
45
GND
—
46
GND
—
47
GND
—
48
GND
—
49
SOFT
O
Soft test terminal
50
SEN
O
Auto indicator output
51
MOVIE A
O
52
MOVIE G
O
53
MUSIC A
O
54
MUSIC G
O
55
I2C DATA
I/O
Serial data input/output
56
I2C CLK
I/O
Serial clock input/output
57
GAME A
O
58
GAME G
O
59
PLACE A
O
60
PLACE G
O
61
PFILE A
O
62
PFILE G
O
LED driver output
63
GROOVE
O
64
+/–
O
65
JOG
O
66
ENTER
O
67
EFECT
O
68
KEYCON G
O
69
KEYCON A
O
70
NON STOP
O
LED driver output
71
VSS
—
Ground
72
DELAY
O
73
REVER B
O
74
SUFFIX0
I
75
SUFFIX1
I
76
SUFFIX2
I
77
SUFFIX3
I
78
WJ1/WJ3
I
Model select terminal
79
GND
—
Ground
80
VCD
I
VCD select terminal
“L”: NON-VCD (Connected to ground)
Ground
LED driver output
Not used
LED driver output
Destination terminal
– 58 –
Pin No.
Pin Name
I/O
Function
81
GND
–
Ground
82
MOTOR1
O
83
MOTOR2
O
84
PANEL OPEN
O
Panel open switch output
85
PANEL CLOSE
O
Panel close switch output
86
ST.MUTE
O
ST mute signal output
87
STEREO
I
Stereo detection input for tuner
88
TUNED
I
Tuned detection input for tuner
89
LAT
O
Tuner PLL latch output
90
DATA IN
I
Tuner PLL data input
91
PCL OUT
O
Sub clock output
92
DATA OUT
O
Tuner PLL data output
93
CLK
O
Tuner clock output
94
POWER ON/OFF
O
Power on/off control output
95
GEQ LAT
O
GEQ latch output
96
GEQ DATA
O
GEQ data output
97
GEQ CLK
O
GEQ clock output
98
LAT1
O
99
LAT2
O
Not used
100
DATA
O
Panel motor contol output
• Abbreviation
GEQ : Graphic Equalizer
PLL : Phase Locked Loop
PLL : Phase Locked Loop
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