Sony STR-W555 Service Manual page 38

• Main (1/2) section
IC401 M65850P
14 13 12 11
OSCILLATOR
D/A
1/2 VCC
CLOCK DO1
MO
AUTO
MAIN
RESET
RESET CONTROL
MI
D1 DO0
A/D
LPF1
1 2 3 4 5
• Main (2/2) section
IC112 MC14052BCP
2X0 1
2X2 2
3
2XCOM
2X3 4
2X1 5
INH 6
VEE 7
VSS 8
• MIC/ECHO section
IC6002 M65850P
14 13 12 11
OSCILLATOR
D/A
1/2 VCC
DO1
CLOCK
MO
AUTO
MAIN
RESET
RESET
CONTROL
MI
D1 DO0
A/D
LPF1
2 3 4 5
1
10 9 8
LPF2
20KBIT
SRAM
6 7
IC851 uPC1237HA
16 VDD
15 X2
14 X1
13 XCOM
12 X0
11 X3
10 A
9 B
1 2
10 9 8
LPF2
20KBIT
SRAM
6 7
IC402 MC14053BCP
B1 1
B0 2
OPEN
C1 3
C.COM 4
OPEN
5
CO
6
INH
VEE 7
OPEN
VSS 8
OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
AC OFF
DET
3 4
– 54 –
VDD
16
B.COM
15
14 A.COM
13 A1
A0
12
11 A
10 B
9 C
V ON
CC
F/F
MUTE
5 6 7
V
CC
8