ViewSonic VLCDS25973-2W Service Manual page 73

10. Schematic Diagrams
JP2
12VCC VCC
1
J7
2
1 3
2 4
3
CONN 4PIN
4
CONN 4PIN_3.96mm
12VCC
L5 22uH
AWG1
C11 C185
C8 4.7uF/NC 0.1uF
0.1uF
U2
VCC AIC1084
3 2
VIN VOUT
R17
CT7 C16
200R 1%
470uF/16V 0.1uF
AAQ5
R18
330R 1%
CLOSE TO U2
R285
R286
12VCC
R287
R288
R289 R290
10K 10K
ViewSonic Corporation
12VCC
4PIN FOR VP
L20
C145 CT1 CT2
+ +
0.1uF 100uF/16V/LSR 470uF/16V
LowESR
Option for +12V input only
U1 AP1501 L4
150uH
AWG2
1 2
+VIN VOUT
4
VOS
CT26
470uF D1
5V_MAIN=2.5A
1N5822
R301
0
+3.3V
U3 UTC1117-1.8V
3 2
VIN VOUT
R15
C17 C18 CT8 C19
NC
100uF/16V 0.1uF 100uF/16V 0.1uF AAQ8
R19
0
CLOSE TO U3
U31
10R
7805
10R
1 3
VIN VOUT
10R
C176 CT24
10R
0.1uF 100uF/16V
Confidential - Do Not Copy
70
+3.3V VCC
22uH
12INV
C154
CT22 +
C31 C32
470uF/16V/LSR 0.1uF
0.1uF 0.1uF
PNL_EN
VCC
C10
+
0.1uF CT5
1000uF/16V/LSR
BLON
BRIGHT
+1.8V
CT9 C20
100uF/16V 0.1uF
BKL_ON
BRI_ADJ
VCC_MUX
C177
CT25
0.1uF 100uF/16V
VP191b/s-1/-2
L2 22uH
PANELPIN
L3 22uH/NC
CT3 C144 VCC
1
2
470uF/16V 0.1uF
3
4
R60
10K
R168 0
R144 C5
AAQ4
1
0.1uF
1K C9 Q2
0.1uF 2N3904
R14
BKL_ON
100
C21 R95 C22
100pF/NC 10K 0.1uF
R12 1K
BRI_ADJ
R94
C13 C14 CT6
10K
100pF/NC 0.1uF 100uF/16V
CN6
1 9
2 10
3 11
4 12
5 13
6 14
7 15
8 16
CON16B C181 C182
HEAD8X2
0.1uF 0.01uF
GND GND
ViewSonic Corporation
Title
GM5321 for VP Series
Size Document Number
Date: Wednesday, January 12, 2005
Q11
8
S D
7
S D
6
S D
5
G D
VPL
IRF7204
R142 R143 CT4 C6 C7
750R 750R 100uF/16V/NC 0.1uF 0.1uF
J6
12INV
1
2
BKL_ON
3
BRI_ADJ
4
5
12INV
6
7
BKL_ON
8
BRI_ADJ
9
10
HEADER 10-2.0
+5V 12VCC
C183 C184
0.1uF 0.01uF
GND
Rev
POWER D1
Sheet 2 of 9