Ic Block Diagrams; Ic Pin Function - Sony TA-F3000 Service Manual

QQ
3 7 6 3 1 5 1 5 0

3-6. IC BLOCK DIAGRAMS

• Main section
IC701 µPC1237HA
OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
AC OFF
DET
1 2 3 4
• Panel section
IC902 X24C01
VCC TEST INPUT SCL
8 7 6
START CYCLE
H.V. GENERATION
T E
L 1 3 9 4 2 2 9 6 5 1 3
START & CONTROL
STOP
LOGIC
CONTROL
LOGIC
E PROM
XDEC
32
LOAD
INC
WORD
ADDRESS
COUNTER
5
2
R/W
CK
PIN
DATA REGISTER
D
OUT
ACK
1 2 3
NC NC NC
IC904 BA6208
MOTOR
SWITCH
DRIVE
MOTOR
www SWITCH
DRIVE
REG
1 2 3 4 5 6 7
.
http://www.xiaoyu163.com
V ON
CC
F/F
MUTE
V CC
5 6 7 8
SDA
5
TIMING
2
32 x 32
32
YDEC
8
D
OUT
4
VSS
x a o
y
8 9
i
— 13 —
http://www.xiaoyu163.com
8

3-7. IC PIN FUNCTION

• IC901 TMP47C200BN-H371 (INPUT CONTROL, LED DRIVE)
Pin No. Pin Name
1 RCL
2 RDT
3 VDW
4 VUP
5 CD
6
MUT
7 AUX
8 T3
9
T2
10 T1
11 0
12 1
13 2
14 3
15 4
16 5
17 PHONO
18 TUNER
19
CD
20 AUX
Q Q
3 7 6 3 1
21 GND
22
23 T2
24 T1
25 to 29
30 TEST
31 XIN
32 XOUT
33 RESET
34 HOLD
35 TUNER
36
PHONO
37 SIRCS
38 to 41
42
+5V
u 1 6 3
.
2 4
9 9 8
I/O Function
O
Clock
Serial data of EEPROM (X24C01)
I/O
Data
O Down
VR motor control signal (Active: H, Stop: L-L, Brake: H-H)
O Up
O
CD input relay signal output
O Mute Control signal output when switching (Mute: H)
O AUX input relay signal output
I
Connected to ground
O TAPE input relay signal output
O MD input relay signal output
I
I
I Relativity position detection signal of rotary switch
I
(One of them terminal: L, the other terminal: H)
I
I
O
O
Function LED drive signal (ON: L)
O
O
5 1 5 0 8 9 2 4 9
–
Ground
– Not used
O
Function LED drive signal (ON: L)
O
– Not used
I Test terminal (Not used)
I
Oscillation signal 8MHz
O
I Reset signal (Reset: L)
I
Cancellation of hold mode signal (Start: H)
O
TUNER input relay signal output
O PHONO input relay signal output
I
SIRCS signal (Active: L)
–
Not used
– Power supply (+5V)
m
c o
— 14 —
2
9 9
8 2 9 9