Sony BKM-142HD Maintenance Manual page 68

EL4451 (IC301, 302, 303)
1
NC 1
14 V
2
GND 13 NC
V- 3 Σ 12
V+
V+ 4 FB
11
V- 5 REF
10
NC 6 NC
9
2
7 8 GAIN
GAIN
MB88346BPFV (IC403)
VSS 1
1
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7
3
A03 2
2
8 BIT 8 BIT
D/A CONVERTER LATCH
D0-D7
A04 3
3
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7
A05 4
4
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7
A06 5
4
5
8 BIT 8 BIT
D/A CONVERTER LATCH
D0-D7
A07 6
6 D0
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7 D1
D2
A08 7
D3
7 D4
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7 D5
D6
A09 8
D7
8
D8
5
8 BIT 8 BIT
D/A CONVERTER LATCH D0-D7 D9
ADDRESS
1-12 DECORDER
D10
A010 9
D11
VDD 10
A B
MC74HC4053F (IC408)
X1 1
X0 2
OPEN
Y1 3
YC 4
Y0 5
OPEN
EN 6
VEE 7
GND 8
OPEN
TC4W53FU (IC410)
COMMON 1
INH 2
LOGIC LEVEL
CONVERTOR
VEE 3
20 GND
4
12 VSS
8 BIT 8 BIT
LATCH D/A CONVERTER
D0-D7
19 A02
11
8 BIT 8 BIT
D0-D7 LATCH D/A CONVERTER X25040S-C7000 (IC407)
18 A01
WRITE
STATUS
PROJECT
REGISTER
LOGIC
CS 1
COMMAND
DECODE
SO 2 AND
17 DI
CONTROL
LOGIC
WP 3
WRITE
CONTROL
AND
16 CLK
TIMING
LOGIC
4
VSS
15 LD
14 D0
10
8 BIT 8 BIT
LATCH D/A CONVERTER
D0-D7
13 A012
9
8 BIT 8 BIT
D0-D7 LATCH D/A CONVERTER
12 A011
11 VCC
C
BHA BHA
BKM-142HD BKM-142HD
16 VDD
15 XC
ZC
14
13 Z1
12 Z0
11 AZ
10 AX
9 AY
8 VDD
OUT IN
7 CH0
C
6 CH1
OUT IN
C
5 A
X DECODE 512 BYTE
LOGIC ARRAY
32
32X32
8 VCC
32
32X32
64
64X32
4 8
Y DECODE
7
HOLD
DATA REGISTER
6
SCK
5 SI
7-14 7-14
D E F G
BKM-120D/127W/129X/142HD
H