Sony VPL-X2000U Service Manual page 283

A B
9-67
C D
H
H Board IC Block Diagrams
MB8814APFV-ER (IC6301, 6303)
CSO 16
CS1 17
CS2 18
MOD 19
SCL 20
SDA 21
D0 D7
8BIT
LATCH
1ch 4ch
VDD1 22
R–2R
LADDER
VSS1 23
CIRCUIT
VCC 13
GND 24
1 2
A01
TC74VHC244F (IC6302, 6304)
OEA 1
2
A1
YB4 3
4
A2
YB3 5
A3 6
YB2 7
A4 8
YB1 9
GND 10
9-67
E F
I C BUS INTERFACE 2
D/A&I/O CONTROL LOGIC
D0 D7 D0 D7 D0 D7
8BIT 8BIT 8BIT
LATCH LATCH LATCH
5ch 12ch
VDD2
R–2R R–2R R–2R 15
LADDER LADDER LADDER
14 VSS2
CIRCUIT CIRCUIT CIRCUIT
8
3 4 5 6 7 8 9 10 11 12
A04 D7/A05 D0/A012
20 VCC
19 OEB
18 YA1
17 B4
16 YA2
15 B3
14 YA3
13 B2
12 YA4
11 B1
G H
1
2
3
4
5