![background image](http://html1.mh-extra.com/html/benq/q7c3/q7c3_service-manual_2734280050.webp)
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
R+
G+
B+
PC5V
GND
GND
GND
GND
GND
PC5V
PC5V
V33
V33
GND
V33
V33
GND
GND
GND
V33
GND
GND
GND
GND
GND
GND
TXD
RXD
TXD_1
HS
VS
RED+
BLUE+
GREEN+
ISOG
HS_I
RS232_EN
D-SUB_CABLE_DETECT
VS_I
HS_I
VS_I
RXD_1
TXD_1
RXD_1
VS
HS
Title
Size
Document Number
R ev.
Date:
Sheet
o f
Project Code
Reviewed By
Approved By
Prepared By
Model Name
PCB P/N
PCB Rev.
Benq Corporation
OEM/ODM Model Name
99.L9072.000-C3-304-005
INTERFACE BOARD
3
7
TOM LONG
DAVEN WU
48.L9001.S21
S21
ANGEL HU
<Size>
Q7C3-LG
99.L9072.001
0
Tuesday, June 03, 2003
NA
(NO SCREW)
R24
10K
C22
0.047U K
C28
47P
50V J
R15
75
TP2
R27
2.2K
DN4
BAV70LT1
2
3
1
R22
4.7K
TP7
R20
100
C24
0.047U K
Q2
2N3904
1
3
2
R301
0
R28
2.2K
R25
10K
U3
AT24C02A
A0
1
A1
2
A2
3
VSS
4
VCC
8
WP
7
SCL
6
SDA
5
D1
TZMC5V1
1
2
C23
1000P K
U4D
74LVC14A
9
8
14
7
R26
OPEN
D5
TZMC5V1
1
2
CP1
OPEN(22pF)
1
2
3
4
5
6
7
8
L302
1000 OHM
C25
0.047U K
R10
22
R17
2.7K
R23
4.7K
TP3
U4C
74LVC14A
5
6
14
7
TP4
D3
TZMC5V1
1
2
C30
47P
50V J
TP9
C26
0.1U K
TP5
D4
TZMC5V1
1
2
R302
100
R18
47
TP1
R13
22
R9
75
C29
0.1U K
R19
47
DN1
BAV99
1
3
2
TP8
U4A
74LVC14A
1
2
14
7
C31
47P
50V J
D301
TZMC5V1
1
2
C27
47P
50V J
J4
2024012015
1
7
2
8
3
9
4
10
5
11
12
13
14
15
6
16
17
TP6
DN3
BAV99
1
3
2
R12
75
TP301
TP10
R21
100
R16
2.7K
TP11
DN2
BAV99
1
3
2
Q1
2N3904
1
3
2
R7
22
D2
TZMC5V1
1
2
L301
1000 OHM
U4B
74LVC14A
3
4
14
7