BenQ Q7C3 Service Manual page 50

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