Schematic Diagrams - ViewSonic N3260w-1NT Service Manual

9. Schematic Diagrams

9.1 POWER
V C C _ A M P
5V_SB
L1
1 2
1 0 u H / C OIL
R 2 C 1 R 3
+
1 K 1000uF F B 2 560
P B Y 3 2 _ 1 9 O H M
R 7
GND-AMP
V C C _ 1 2V
L2
1 K
1 2
1 0 u H / C OIL
R 1 0 C 1 0
+
1 K 1000uF
G N D
G N D
7 P O W E R _ O N
H : System Off
L : System On
D 1
5V
D 2 1N4148
1 2
L3 Q 4
S S L 0 4 0 2 T - 1 R 0 M - S
I R F 7 8 21
8
1 2 7 3
6 2
C 1 7 C 1 8 5 1
+ +
4
220uF 150uF
R 1 9
G N D
G N D
0
15mils
5V
R 2 4
U 3
I R U 3 0 3 7ACS
0 10mils
1 8
Fb S S
R 2 5
2 7
VCC Comp
3 6
LDrv Vc
C 2 7
4 5 C 3 0
G N D HDrv
1uF
100nF
G N D G N D G N D
5V_SB
R 2 9
0
R 3 1
7 P O W E R _ O N
10k
R 3 2
1 K
S B _ P W R R 3 3 4.7K
1
6 S B _ P W R
H : Power Off
L : Power On
G N D
ViewSonic Corporation
F B 1
5V_SB F1 F U S E
P B Y 3 2 _ 1 9 O H M
C 2 C 3 C 4
+
470uF 100nF F B 3 100nF F B 4
P B Y 3 2 _ 1 9 O H M P B Y 3 2 _ 1 9 O H M
470uF
C 6 C 7
C 5
100nF F B 5 100nF
F2
P B Y 3 2 _ 1 9 O H M
F U S E
5V_SB
5V_SB
R 1 2 1 K
R 1 4
R 1 5 0
10K Q 3 C 1 1
R 1 7 4.7K 1 100nF
MMBT3904
G N D
1N4148
1 2
D 3 1N4148
1 2
C 1 6
L4
S S L 0 8 0 4 T - 4 R 7 M - S
100nF
1 2 400mils
5 6 7 8
R 1 8
Q 5
+
4.7
4
I R F 7 8 21
C 2 3 R 2 0
1 2 3
400mils
470pF 0
C 2 4 N S
G N D
R 2 2 3.16K 1%
close to pin 1
R 2 3
close to pin 1
1K 1%
4 7 K
G N D
C 3 1 C 3 2
10nF 100nF
G N D G N D
5V_SB 5V
U 5
R 2 7 10k 1 8
S D
2 7
1N4148
S D
3 6
D 5 S D
4 5
G D
C 4 1 C 4 2
SI4435
+
1
SO-8
47uF 100nF
G N D G N D G N D
32
Confidential - Do Not Copy
G N D
N16810698
G N D
G N D
NT3260w-NT use FB11
NT3760w-NT NT4060w-NT use FB10
3.3V
F B 8
C 2 0 C 2 1 C 2 2
+
P B Y 3 2 _ 1 9 O H M
100nF 100nF 100uF
G N D
5V V C C
FB15
P B Y 32_120 OHM
C 2 8 C 2 9
7 B K L T _ P W R
+
100nF 100uF
G N D G N D
5V 5V_P
FB17
P B Y 32_120 OHM
C 3 3 C 3 4 C 3 5
+
100nF 100nF 100uF
G N D G N D G N D
V C C _ 12V U 6
LM7809_T0263_3
FB19
1 3
VI VO
P B Y 3 2_120 OHM
C 4 3 C 4 4 C 4 5
+ +
100uF 100uF 100nF
G N D
G N D G N D G N D
N3260w_N3760w_N4060w
N3260wb_N3760wb -1NT
V C C
P O W E R 1
C O N N R E C T 1 3
R 1
13
12
11 1 0 K _ N S
10
9 R 5 22
8
R 8 C 8 C 9
7
+
6
5
4 0 _ N S 10nF 100uF
V C C
3
2
1 G N D G N D G N D
R 1 1
1 K
I N V _ O N
1 R 1 6
Q 2
MMBT3904
G N D
5V U 1 3V3_SB
A P L 1117_3.3
F B 7
3 2
VI VO
P B Y 32_120 OHM
C 1 2 C 1 3 C 1 4
4
T A B
+
100uF 100nF 100nF
G N D G N D G N D G N D
NT3760w-NT NT4060w-NT use FB10
NT3260w-NT use FB11
V C C _ 12V
5V_SB 5V_SB
R 2 1
10k
U 2
D 4
1
S D
1N4148
2
S D
3
S D
4
G D
R 2 6 1 K SI4435
1
G N D
V C C _ 12V
FB18
P B Y 3 2_120 OHM
C 3 6 C 3 7
+ +
100uF 100uF
9VA
G N D G N D
C 4 6 C 4 7
+
100nF 100uF
G N D G N D
V C C
R 4
4.7K
R 6 0
EXT_ P W M
1 R 9 10K
Q 1 EXT_ P W M 10
MMBT3904
G N D
R 1 3
V C C
1 0 0 _ N S
R624
10K
B K L T _ C N T L
330
B K L T _ C N T L 7
R G 1 0
R G 2 0
G N D G N D
C 1 5
+
R G 3 0
G N D G N D
100uF
R G 4 0
G N D G N D G N D
R G 5 0
G N D G N D
P V D D
R G 6 0
G N D G N D
R G 7 0
G N D G N D
F3
6 . 3 A / 250V
R G 8 0
G N D G N D
8
G N D G N D
7
6
5
C 2 5 C 2 6
+
47uF 100nF
G N D G N D
U 4 9VB
L M 7 8 0 9 _ T 0 2 6 3 _ 3
1 3
VI VO
C 3 8 C 3 9 C 4 0
+
100nF 100nF 100uF
G N D G N D G N D G N D