Sony HCD-GZR333IA, Service Manual

Page: 64 / 98

HCD-GZR333IA
64
VIN
1
VOUT
2
SS
5
ADJ
4
LATCH
&
DRIVER
ERROR AMP
COMPARATOR
OSCILLATOR RESET
OVERCURRENT
PROTECTION
THERMAL
PROTECTION
REFERENCE
VOLTAGE
GND
3
ON/OFF
SOFT
START
PREG
+
+
–
–
IC931 SI-8001FFEK (MAIN Board (3/3))
IC951 SI-8001FFEK (MAIN Board (3/3))
IC1500 TC74LVX4051FT (VIDEO Board)
IC781 BU9253FS-E (MIC Board)
16
OSC
CR
15
MUTE
14
VCC
13
AD IN
12
AD OUT
11
LPF OUT
10
LPF IN
9
MIX IN
1
GND
2
ECHO VOL
3
BIAS
4
DA IN
5
DA OUT
6
LPF IN
7
LPF OUT
8
MIX OUT
SRAM COUNTER
MIX
A/D
D/A
1
D4
2
D6
3
COM
4
D7
5
D5
6
INH
7
VEE
8
GND
9
SEL
C
10
SEL
B
11
SEL
A
12
D3
13
D0
14
D1
15
D2
16
VCC
OUT
C
IN
OUT
C
IN
OUT
C
IN
OUT
C
IN
OUT
C
IN
OUT
C
IN
OUT
C
IN
OUT
C
IN
LOGIC LEVEL
CONVER
TER