Read Sony TA-FB730R Service Manual online
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– 24 –
3-11. IC PIN FUNCTION
• IC902 Input Control & LED Drive (TMP47C103N-JP47) (PANEL BOARD)
O
I
I
I
O
O
I
I
I
I
O
O
O
—
O
O
O
O
O
I
I
I
O
O
O
O
I
—
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
X OUT
X IN
RESET
PMD
VOL +
VOL –
SW 0
SW 1
SW 2
EON
PHONO
TUNER
CD
GND
AUX
MD/DAT
TAPE
MON
PRY
PKY
MOI
SIRCS
MUTE
SCE
SDT
SCK
STOP
+3V
System clock (4MHz)
Reset input
Mode select input
Motor drive output (+)
Motor drive output (–)
Rotary switch input (CD)
Rotary switch input (TUNER)
Rotary switch input (PHONO)
EON signal input
PHONO LED drive output
TUNER LED drive output
CD LED drive output
Ground
AUX LED drive output
TAPE “2” LED drive output
TAPE “1” LED drive output
MONITOR output
Power relay output
Power key input
MONITOR input
SIRCS input
Muting output
Chip enble output
Serial data output
Serial clock output
STOP input
+3V Power supply
I/O
Function
Pin No.
Pin Name
3-10. IC BLOCK DIAGRAMS
• Main section
IC700 uPC1237HA
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
• Panel section
IC901 BA6208
1
2
3
4
5
6
7
8
9
NC
OUTPUT 2
Vcc
GND
NC
INPUT 2
INPUT 1
NC
MOTOR
DRIVE
MOTOR
DRIVE
REG
SWITCH
SWITCH
OUTPUT1
• Input section
IC101 LC7821
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTROL
LATCH
SHIFT RESISTER
LEVEL SHIFT
CL
DI
CE
VEE
L COM3
L7
L COM2
L5
L4
L2
VSS
S
RES
VDD
R COM3
R8
R7
R COM2
R6
R4
R2
R5
R COM1
R3
R1
L3
L1
L COM1
L6
L8
BUFFER
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