Sony VPL-X2000U Service Manual page 211

5V–4
TB2901
S2901
1 NC/GND
1
6 DSR/GND
6
2
RD/TX
2
7 RTS/TX
RD
7
3 TD/RX
RS–232C/422
3
8
CTS/RX
8
4 DTR/GND 2
4
9 NC/GND
9
5 GND/NC
5
SWITCH
Q2912
1
6
2
SWITCH
7
PJ COM
Q2913
3
IN
8
4
9
5
SWITCH
Q2914
TB2902
1
6
2
7
PJ COM
3
OUT
8
5V–4
4
9
5
D2914–2917
PROTECTOR
D2916 D2917
CONTROL–S
5V–4
IN D2908
PROTECTOR
PROTECTOR
3/8 WRCL
SWITCH
1/8 SMIX
Q2903
A B
SWITCH
Q2915
TD
RD
TX RX
3
TD
5V–4
2
RY2901
IC2904
D2902 INVERTER
PROTECTOR
4 5
4
TX
5V–4
RX
RY2902 RX
TX
D2903
PROTECTOR
6 7
TX
5V–4
RX
RY2903
D2904
PROTECTOR
8 9
IC2906
LEVEL SHIFT
6 A
RO 1 SI
R
2
7 B RE
3 RTS
DE
DI SO
4
D
6 A
RO 1 DSR
R
2
D2915 D2914 7 B RE
DE 3 RTS
DI
4 DTR
D
IC2907
LEVEL SHIFT
D2905
IC2905(1/4)
PROTECTOR
COMPARATOR
2
1 4
2 INVERTER
3
5
RV2901 IC2903(1/2)
OP AMP
O SET
D2907
6
1
7
D2912
IC2905(2/4)
OR
COMPARATOR
INVERTER
Q2901
D2913
TP2902
OR
INVERTER INVERTER
Q2905 Q2909
C D
M (8/8) M (8/8)
IC2909
LEVEL SHIFT
IC2901(2/3)
25
INVERTER
SHDN
6 2
2/8
RES
24 EN
21
RIN
9 R1OUT 8 SI 25
R
T4OUT 21 SO
28 T4IN 26
T
11
X2901
18.432MHz
13
IC2910
OSC
LEVEL SHIFT
3 RE
12 A
DSR 41
2
RO SI
R
11 B
SI 39
10 Z
9 Y 5
DI SO
D
DE
4
5V–4
SWITCH
Q2908
6
7
INVERTER
7
Q2906
Q2906
IC2903(2/2)
IC2911
OP AMP
5V–4
D.FF
2
7
D PR
1 6
INVERTER
CK CLR
Q2907
5
Q
INVERTER
Q2904
SWITCH
SIRCS 2/8,7/8
5V–4
Q2910
BUFFER
D2909
Q2911
PROTECTOR
8-23 8-23
E
IC2902
SERIAL INTERFACE
MR
24 RD
RD R/W
SIN2
20 WRL
WRL
18
CS CE6
SOUT2
10
A0
A0
14 A1
A1
XIN
15 A2
A2
16 A3
XOUT
CHSL
2–9
D0–D7
D0–D7
IC2901(3/3)
INVERTER
17
3 5
INTR2 232C/422
I–DSRI
34
1 7
SIN1 485
IC2901(1/3)
38 SO
INVERTER
SOUT1
37 DTR
O–DDATA
36 RTS
O–RTS1
IC2905(4/4)
13.5V
COMPARATOR
8
14
9
J2901
POWER ON
D2911
TRIG
10
REF
13
11
IC2905(3/4)
COMPARATOR
TB2902
CONTROL–S
D2906
OUT
PROTECTOR
F G
1
2/8
3/8
A 3/8
2
3/8
D
2/8
2/8
3
4
5
M BLOCK (8/8)
H