Service manual

LED1
V12_ON
IRup
KEY0
KEY3
KEY5
KEY4
KEY6
IRRC
V12_ON
KEY1
KEY2
PWSW
PWSW
IRup
PWROFF
PWRON
LED1
PWSW
V12_ON P{19}
IR P{9}
KEY[6:0] P{9}
AC_ON
P{17}
2030CLOCKP{9}
PWRDOWNP{9}
CEC {3,9}
DPMS
P[9]
Vsub
Vsub V5up
VsubVsubIR
Vsub
Vsub
Vsub
Vsub Vsub
V5up
V5up
V5up
V5up
V5up
V5up
VCC
V5up
V5up
V5up
V5up
POWER OFF=HI
2.
ᄅ
R357
ᏺ
C477102
R315 0_NC
D30
1N4148
A K
C486 22P
L114 SBK16-102
L106 SBK16-102
U40C
74LVC14
5 6
147
C473
.1
D29
1N4148
A K
R305
10K
U40A
74LVC14
1 2
147
C471
.1
L109 SBK16-102
U41 SM5964C40J
RST
10
XTAL2
20
XTAL1
21
GND
22
PSEN
32
ALE/PROG
33
EA/VPP
35
VCC
44
P1.0
2
P1.1
3
P1.2
4
P1.3
5
P1.4
6
P1.5
7
P1.6
8
P1.7
9
P2.0/A8
24
P2.1/A9
25
P2.2/A10
26
P2.3/A11
27
P2.4/A12
28
P2.5/A13
29
P2.6/A14
30
P2.7/A15
31
P3.0/RXD
11
P3.1/TXD
13
P3.2/INT0
14
P3.3/INT1
15
P3.4/T0
16
P3.5/T1
17
P3.6/WR
18
P3.7/RD
19
P0.0/AD0
43
P0.1/AD1
42
P0.2/AD2
41
P0.3/AD3
40
P0.4/AD4
39
P0.5/AD5
38
P0.6/AD6
37
P0.7/AD7
36
L117 SBK16-102
Y8
12 MHZ
1 2
3
D18
1N4148
A K
R308 100_NC
L112 SBK16-102
C483
100U
12
Q17
2N7002_NC
D
G
S
U40D
74LVC14
9 8
147
C485 22P
L108 SBK16-102
R299
10K
J10
KEYPAD
1
2
3
4
5
6
7
8
9
C467102 C465102 C466101
L115 SBK16-102
L113 SBK16-102
R307 3.3K
R301 1K
R309 100
D28
1N4148
AK
J9
LED/IR
1
2
3
4
L116 SBK16-102
D271N4148
A K
L111 SBK16-102
D261N4148
A K
C481102
+ C487
10U
R296 470
R316
10K
Q16
3906
3 2
1
C479102
R306 5.6K_NC
L107 SBK16-102
R300 2.2K
R297
1K
R357
10K
C468
100U
1 2
R298
5.6K
C482
.1
L105 SBK16-102
C480102
U39
74LVC1G126
1
2 4
3 5
R314 0
C484
.01
R311 10K
C472
.1
C476102
R313
1M
C470
.1
C474102
R303
470
C475102
C469
100U
12
R302
30K
Q15
2N7002
D
G
S
R304
3.3K
U40B
74LVC14
3 4
147
Q18
3904
CE
B
R312
1K
L110 SBK16-102
R310 10K
C478102
ViewSonic Corporation Confidential - Do Not Copy N4261w-1M
32
9.2 MICROCONTROLLER