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46
ViewSonic Corporation
Confidential - Do Not Copy
VA502mb-1
VCPU
OUT-R-
R613
10K
Ω
1/16W
onBACKLITE 2
R625 10K
Ω
1/16W
LED_O
AD0
4
VCPU
R614 10K
Ω
1/16W
R634
100
Ω
1/16W
R618
120
Ω
1/16W
R601
10K
Ω
1/16W
U601
W78E65P-40
35
21
20
10
14
15
16
17
2
3
4
5
6
7
8
9
43
42
41
40
39
38
37
36
24
25
26
27
28
29
30
31
19
18
32
33
13
11
22
44
12
EA/VP
XTAL1
XTAL2
RESET
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P3.7/RD
P3.6/WR
PSEN
ALE/P
P3.1/TXD
P3.0/RXD
VSS
VCC
P4.3
Q602
PMBS3906
3
2
1
VCC5V
2,3,4
onPANEL_5V/3.3V 2
LED_B
FB602 600 OHM
Reset
Circuit
POWER
R643
NC
LED_ORANGE
OUT-L+
R638
NC
ENTER
C618
0.1uF
R640
NC
FB603
600 OHM
C612
0.1uF
R623 470
Ω
1/16W
VCPU
VCPU
Standby
LEFT
R624
470
Ω
1/16W
VCPU
2
X601
20MHz
CSZ
4
C616
1uF/25V
RIGHT
C617
100pF
+
C603
10uF/16V
C607
0.001uF
C613
0.1uF
Mute_key
RN602
10K
Ω
1/16W
1 2 3 4
8 7 6 5
CN602
CONN
2
4
6
8
10
12
14
16
1
3
5
7
9
11
13
15
R616
4.7K
Ω
1/16W
R617
120
Ω
1/16W
Mute_key
R629
4.7K
Ω
1/16W
ST_DET1
3
VCPU
AD1
4
R605 10K
Ω
1/16W
DDC_CLK 3
OUT-R+
C604 22pF
VCC12V
R639
100
Ω
1/16W
VCPU
Volume
4
R641 NC
R635
100
Ω
1/16W
VCPU
LEFT
R604 10K
Ω
1/16W
VCC12V
2
SDA
4
R611
NC
R630
NC
R628
0
Ω
1/16W
TXD
3
R631
NC
DVI-DSUB SELECT
R615 10K
Ω
1/16W
R620
470
Ω
1/16W
LED_GRN
AUTO
LED_BLUE
C606
0.001uF
VCC5V
R603
10K
Ω
1/16W
LED_G
AUTO
C605
0.22uF
C602 22pF
VCPU
DVI-DSUB SELECT
Q604
NC
3
2
1
CN603
NC
1
2
3
4
1
2
3
4
OUT-R+
R622
470
Ω
1/16W
C609
0.001uF
Mute
OUT-L-
R626
10K
Ω
1/16W
AD2
4
Q601
PMBS3906
3
2
1
LED_B
OUT-L-
R636
0
Ω
1/16W
VCC5V
R637
470
Ω
1/16W
R632
NC
LED_O
R609
100
Ω
1/16W
C614
NC
D601
LL4148-GS08
C611
1uF/25V
HWRESET 4
Q603
PMBS3906
3
2
1
R608
100
Ω
1/16W
R642
0
Ω
1/16W
ST_DET2
3
INT
4
OUT-R-
SCL
4
POWER
C608
0.001uF
R610
NC
R602
10K
Ω
1/16W
DDC_DAT 3
R607
10K
Ω
1/16W
RIGHT
C601
0.1uF
R627
10K
Ω
1/16W
LED_G
RN601
10K
Ω
1/16W
1 2 3 4
8 7 6 5
FB601 600 OHM
R612
NC
RXD
3
ENTER
U602
AT24C16N-10SC-2.7
1
2
3
4
5
6
7
8
A0
A1
A2
GND
SDA
SCL
WP
VCC
C615
NC
OUT-L+
AD3
4
R621 470
Ω
1/16W
VCC5V
U603
MAX810STR
1
2
3
GND
RST
VCC
CN601
CONN
2
4
6
8
10
12
14
1
3
5
7
9
11
13
R633
NC
C610
0.001uF
R619
4.7K
Ω
1/16W
VCPU
R606
10K
Ω
1/16W
Model
Title
Date
Rev:
ViewSonic Corporation
MCU
Summary of Contents for VA502mb-1
Page 10: ...7 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 13: ...10 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 14: ...11 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 16: ...PIN Descriptions 13 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 18: ...Block Diagram PIN Function 15 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 38: ...5 7 Packing Procedure 35 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 42: ...39 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 6 Troubleshooting Flow Chart...
Page 43: ...7 Block Diagram 40 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 53: ...9 PCB Layout Diagrams MAIN BOARD 50 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 54: ...POWER BOARD 51 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 56: ...53 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 57: ...AUDIO BOARD 54 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 58: ...KEY BOARD 55 ViewSonic Corporation Confidential Do Not Copy VA502mb 1...
Page 61: ...58 ViewSonic Corporation Confidential Do Not Copy VA502mb 1 Packing for Shipping...