BenQ Q7C3 Service Manual page 62

5
D
LED_BLU
LED_ORG
L5 240 OHM
KEY_INC
L6 240 OHM
ENTER
L7 240 OHM
EXIT
L8
240 OHM
KEY_DEC
L9 240 OHM
PW_SW
L10 240 OHM
I-KEY
C
+5V V33
R603 R604
0 0 (OPEN)
R0805 R0805
B
C81
0.1U K
U7 GND
D[15:0]
D0
3 2
D1 Q1
D1
4 5
D2 Q2
D2
7 6
D3 Q3
D3
8 9
D4 Q4
D4
13 12
D5 Q5
D5
14 15
D6 Q6
D6
17 16
D7 Q7
D7
18 19
D8 Q8
11
CS1n CLK
1
RESETn
CLR
74LVC273
A
GND
5
4
R602
100 R601
100
1K
R61
R62 1K
R63 1K
R64 1K
C72 C73 C74 C75
100P 100P 100P 100P
50V J 50V J 50V J 50V J
R68 R69
4.7K
ENTER
KEY_DEC
KEY_INC
EXIT
I-KEY
PW_SW
D-SUB_CABLE_DETECT
LCD_ON
CS0n
LED_BLU
Power_OFF
LED_ORG
R76
BL_ON
0
VOL_ON
RS232_EN
ADC_PW_ON
4
3
TP26
TP27
TP28
TP29
TP30
TP31
R65 1K TP32
R66 1K TP33
C76 C77
100P 100P
C78
50V J 50V J
0.1U K
R70 R71 R72 R73 R74 R75
4.7K 4.7K 4.7K 4.7K 4.7K 4.7K
2
1A1
4
1A2
6
1A3
8
1A4
11
2A1
13
2A2
15
2A3
17
2A4
1
OE1
19
OE2
R77
O PEN
3
2
CON1
1
2
3
4
5
6
7
8
9
2060091109
C79
0.1U K
R67 0
GND_SIGNAL
V33 GND GND_SIGNAL
C80
0.1U K
GND
U8
D0
18
1Y1
D1 D[15:0]
16
1Y2
D2
14
1Y3
D3
12
1Y4
D4
9
2Y1
D5
7
2Y2
D6
5
2Y3
D7
3
2Y4
74LCX244
Benq Corporation
Project Code
99.L9072.001
GND
Title
Size
PCB P/N
<Size>
Tuesday, May 13, 2003
Date:
Prepared By
ANGEL HU
2
1
Model Name OEM/ODM Model Name
Q7C3 NA
INTERFACE BOARD
PCB Rev. Document Number R ev.
0
48.L9001.S11 99.L9072.000-C3-304-001
S11
Sheet 6 o f 7
Reviewed By Approved By
WAIT CHEN DAVEN WU
1
D
C
B
A