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A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
CS0n
D2
D4
D7
D5
D3
D0 D0
D1
D3
D5
D7
D4
D6
D2
D1
D[0:7]
D6
D[0:7]
IRRCVR
IRRCVR1
IROUTIRVCC
LED5
LED4
LED0
LED3
LED2
LED1
KEY8
KEY[7:0]
LED3
LED2
LED1
LED0
LED4
KEY4
KEY7
KEY0
KEY4
KEY1
KEY6
KEY3
KEY2
KEY0
KEY6
KEY5
KEY7
KEY5
KEY3
KEY2
KEY1
LED5
IRRCVR2
IRVCC
IROUT
D[0:7]
CS0n
3.3V
CS1n
GND
RESETn
D[0:7]
IRRCVR
VDD
KEY8
VDD
3.3V
3.3V
VDD
VDD
VDD
VDD
KEY[7:0]
KEY[7:0]
LED[5:0]
LED[5:0]
IRRCVR1
IRRCVR2
IRRCVR1
IRRCVR2
Title
Size Document Number Rev.
Date: Sheet
of
Project Code
Reviewed By Approved By
Prepared By
Model Name
PCB P/N
PCB Rev.
Benq Corporation
OEM/ODM Model Name
48.J8601.S04
MAIN BOARD
12 20
DAVID HN LIN KELVIN LIAO
99.J8677.B12-C3-304-004S04
ANGEL HU
<Size>
PB610099.J8677.001
1
Tuesday, October 07, 2003
<OEM/ODM>
In version 2 PCB the power for this block is VDD_D but it
is floating. I version 3 schematic we change to VDD net
for this block power source.
IR receiver circuit
77.62203.0C1
77.62203.0C1 77.62203.0C1
OPEN
RN725 120 OHM
1
2
3
45
6
7
8
U27
74AHC244
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
VCC
20
GND
10
C127
0.1U
R813
0
TP232
R744
0
R957
0
TP34
CN701470P
81
72
63
54
C812
0.1U
TP948
C801
470P K
R22
10K
C811 0.1U
U7
74AHC1G08
1
2
3
4
5
CN703 470P
81
72
63
54
L802
240 OHM
L801
240 OHM
J4 20L2021020
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TP44
TP949
TP233
TP41
R23
510
R958
0
TP35
U28
74LVC273
CLR
1
GND
10
CLK
11
VCC
20
Q1
2
Q2
5
Q3
6
Q4
9
Q5
12
Q6
15
Q7
16
Q8
19
D1
3
D2
4
D3
7
D4
8
D5
13
D6
14
D7
17
D8
18
RN726 120 OHM
1
2
3
45
6
7
8
R857
0
J813
20L2021004
1
2
3
4
TP37
C12
4.7U Z
CN704 470P
81
72
63
54
CN702
470P
81
72
63
54
TP45
TP47
R15
47
TP39
R745
0
U6
FM-6038LM-5A
OUT
1
GND
2
VS
3
TP42
TP46
C816470P K
RN727 120 OHM
1
2
3
45
6
7
8
TP36
TP48
TP231
J913
20D0049103
1
2
3
R858
0
C815
470P K
TP38
RN728 120 OHM
1
2
3
45
6
7
8
TP801
TP40
TP49
TP947
TP43
CP7
0.1U