Read Sony STR-K402 Service Manual online
21
STR-K402
3-16. IC PIN FUNCTION DESCRIPTION
• IC102 MB90553ABPF-G-193-BND (SYSTEM 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
I
I
O
O
O
O
O
O
—
O
—
O
O
O
O
O
O
O
I
I
O
O
—
I
O
I
—
—
O
—
—
—
—
—
—
—
—
I
I
I
I
—
I
I
—
—
I
I
—
—
Pin Name
A
B
BLUE LED
DCS LED
AFD LED
2CH LED
MOD LED
PW RY
P30
SP_A RY
VSS
CENTER RY
WOOFER RY
REAR RY
H/P RY
FL DATA
FL CLK
FL LAT
FLASH 1
FLASH 2
YSS912 CLK
YSS912 SI
VCC
YSS912 SO
YSS912 CS
HTIB
C
P50
AC MUTING
P52
P53
P54
P55
AVCC
AVRH
AVRL
AVSS
AD KEY IN 1
AD KEY IN 2
AD KEY IN 3
AD KEY IN 4
VSS
VERSION
RDS SIGNAL
P66
P67
STOP
RDS DT
MD0
MD1
Description
Read volume encoder A changing
Read volume encoder B changing
Control Blue LED
Control DCS LED
Control AFD LED
Control 2CH LED
Control MODE LED
Control power relay
Control front speaker relay
Ground
Control center speaker relay
Control woofer relay
Control rear speaker relay
Control headphone relay
Output data signal to FL tube driver
Output clock signal to FL tube driver
Output latch signal to FL tube driver
Input FLASH 1 signal
Input FLASH 2 signal
Output clock signal to DSP
Output data signal to DSP
Power supply
Input data signal from DSP
Output chip select signal to DSP
Input HTIB signal
Power stabilizing capacitor
Control power to power amp
Analog power supply
Analog ground
Read key push signal
Read key push signal
Read key push signal
Read key push signal
Ground
Read version setting
Detect RDS signal level
Input signal when AC off
Read RDS data
Selection of micom operation mode
Selection of micom operation mode
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