Sony ZS-RS70BT - Page 53

ZS-RS70BT/RS70BTB
53
IC401 BU4053BCF-E2
– KEY A Board –
IC601 HT1621
IC904 S-T111B33MC-OGSTFG
IC901 NJW4152GM1-A (TE2)
1
2
3
15
16
Y1
Y0
Z1
4
5
6
Z
Z0
INHIBIT
7
8
VEE
VSS
VDD
Y
13
14 X
X1
11
12 X0
A
9
10 B
C
LEVEL
CONVERTER
BINARY TO 1 OF 2 DECODER
WITH INHIBIT
SW8
IN–
5
FB
6
GND
7
V+
ON/OFF
2
PV+
1
3
RT
4
BUFFER
REGULATOR
TSD
OSC
OCP
PULSE BY PULSE
STANDBY
ON/OFF
LOW
FREQUENCY
CONTROL
VREF
ER.AMP
PWM
SOFT
START
+
–
+
–
UVLO
+
–
4
5
1
2
ON/OFF
VOUT
VIN
VSS
3
NC
OVER CURRENT
PROTECTOR
REFERENCE
VOLTAGE CIRCUIT
ON/OFF
CIRCUIT
CS
SEG10
1
RD
2
WR
3
DATA
4
SEG2124
BZ
8
COM0
9
COM1
10
COM2
11
34
SEG30
14
SEG31
13
COM3
12
VSS 5
VLCD 6
VDD 7
CONTROL
AND
TIMING
SCIRCUIT
LCD DRIVER/
BASE CIRCUIT
DISPLAY
RAM
TONE
FREQUENCY
GENERATOR
WATCHDOG TIMER
AND
TIME BASE GENERATOR
SEG29
15
SEG28
16
SEG27
17
SEG26
18
SEG25
19
SEG24
20
SEG23
21
SEG22
22
SEG2023
SEG1925
SEG1826
SEG1727
SEG1628
SEG1529
SEG1430
SEG1331
SEG1232
SEG1133
4
32
SEG9
35
SEG8
36
SEG7
37
SEG6
38
SEG5
39
SEG4
40
SEG3
41
SEG2
42
SEG1
43
SEG0
44