Sony VPH-G90U Service Manual page 423

YA (10/10) BOARD
SUB+5V(MAIN)
EXT BUS
SUB +5V
D0
D1
D2
CN902
15P D3
SUB+5V 1
Y3 ≠≠ ≠
Y3 2
Y2 ≠≠ ≠
Y2 3
Y1 ≠≠ ≠ D4
Y1 4
C905
≠≠ ≠ Y0
Y0 5 0.1
F:CHIP
6
Q7 D5
Q7 7
Q6
Q6 8
Q5 D6
Q5 9
Q4
Q4 10
Q3 D7
Q3 11
Q2
Q2 12
Q1
Q1 13
Q0
Q0 14
GND 15
TO YB BOARD
CN410
VPH-G90J/G90E/G90U/G90M
A B
IC701(3/6)
TC74VHC14F
6 5
485 ≠≠≠ ≠≠
39
SUB +5V
R925
40 I-CTS1
10k :CHIP
41 I-DSR1
R926
10k :CHIP
42 I-DCD1
R927
43 I-RI1
10k :CHIP
44 VDD
C923
0.1
1 TXRDY1
F:CHIP
D0
2 D0
D1
3 D1
D2
4 D2
D3
5 D3
D4
6 D4
IC701(4/6) 7
TC74VHC14F
8 9
422 ≠≠≠ ≠≠
EXT BUS
C924
15p
CH:CHIP
C925
15p
CH:CHIP
C904
0.1
F:CHIP
GND
VCC TDO
TDI TP32
TP16
D0 TP8
TP4
D1 TP2
TP1
D2 VCC
GND
IC901
EPM7128STC100-15
D3
7SEG.LED DRIVER
TCK
TMS INT CLK
START
D4 GND
VCC
D5
D6
D7
VCC
C903
0.1
F:CHIP
C D
YA (10/10) YA (10/10)
SUB +5V
C921 R921 R922 R923 R924
0.1 10k 10k 10k 10k
F:CHIP :CHIP :CHIP :CHIP :CHIP
38 37 36 35 34 33 32 31 30 29
I-CTS2 28
O-DTR2 27
TP941 S02
SOUT2 26
TP942 SI2
SIN2 25
≠≠ ≠ RD
IC921
RD 24
PC16552DV
O-RTS2 23
UART WITH FIFO
VSS 22
MR 21 RES
D941
≠≠≠≠ WRLL ≠≠≠ MA111
WR 20
MF2 19
CS 18 SIF ≠≠≠ ≠≠
1
10 4
8 9 10 11 12 13 14 15 16 17
Q941
DTC114EKA
R930
100
:CHIP
R929
1M X921
:CHIP 18.432MHz
INDEX
1 3 5 7 1 3
SUB +5V
RB961
10k
:CHIP
2 4 6 8 2 4
D961
DA204K
D962
DA204K
D963
DA204K
D964
DA204K
D965
DA204K
D966
DA204K
D967
DA204K
C901
D968
0.1
DA204K
F:CHIP
1 3 5 7 1 3
RB963
100
:CHIP
2 4 6 8 2 4
5 4 3 2 5 4
C8 C4 C2 C1 C8 C4
S962 1 S963 1
X10 X1
X10 X1
10-61 10-61
E
IC941 IC942
MAX202ECSE MAX489ECSD
RS-232C DRV.
RS-422A DRV.
C941
C942
0.1
C1+ VCC
F:CHIP 0.1
F:CHIP
V+ GND
C944
0.1
C1- T1O
F:CHIP
C2+ R1I
C945
0.1
C2- R1O
F:CHIP
V- T1I
C946
0.1
T2O T2I
F:CHIP
R2I R2O
D942 D943 D944
SUB +5V
MA111 MA111 MA111
RY941 RY942 RY943
3 8 5 1 3 8 5 1 3 8 5
2 7 9 6 10 4 2 7 9 6 10 4 2 7 9 6
Q942 Q943 Q944
DTC114EKA DTC114EKA DTC114EKA
SW
IC961
MAX3085CSA
5 7
RS-485 DRV.
RB962
SI TP961 SI1 RO
10k
:CHIP R
RE
RTS
6 8
TP963 S01 DE
7 SO
D
DI
6
IC962
MAX3085CSA
RS-485 DRV.
5
TP964 DSR RO
DSR
R
4
RE
RTS
TP966 DE
3 DTR
D
DTR DI
R975
2 0 :CHIP
1
0
5 7
R965
1k
RB964
:CHIP
100
:CHIP 1
SW
6 8
3 2 8 9 7 11 10 12
5 4 3 2 1
9 8 7 6 14 13 12 11
C2 C1 S961
18 17 16 15
2 3 1 5 6 4 232C<->422A
RS-232C/422A RS-485
9
TB961
4 COMMUNICATION
RS-485
RS-422A/232C
7SEG LED DRIVER
YA(10/10)
F G
SUB+5V(MAIN)
1
C943
0.1
F:CHIP
RX
≠≠ ≠ RX
≠≠ ≠ TX
TX
2
RY944
1 3 8 5
10 4 2 7 9 6
SUB+5V(MAIN)
3
+
C900
470µF
VCC
C961
0.1
B
F:CHIP
A
GND
C962
0.1
VCC
F:CHIP
B
A
GND GND
TP967
+
C991
470µF
D969
4
DA204K
D970
DA204K
D971
DA204K
D972
DA204K
SUB +5V
10 23 22 21 20 19
27 26 25 24
RS-485
5
B-%SX1640<AEP>-YA.
H