ViewSonic VA502mb-1 Service Manual page 45

CN201
GND 1 2 ON_OFF
GND DIM
3 4
VCC12V 5 6 VCC12V
GND GND
7 8
VCC5V 9 10 VCC5V
GND GND
11 12
CONN
VCC5V
R203
1KΩ 1/16W
Brightness
R205 4.7KΩ 1/16W
1 Q202
4 AdjBACKLITE
PMBS3904
C
B E
VCC5V
6 onPanel_5V/3.3V
4.7KΩ 1/16W
ViewSonic Corporation
R201 4.7KΩ 1/16W
D201 SS14
FB201
600 OHM
C202 C204
C203
+ +
0.1uF 220uF/25V
220uF/25V
R204
10KΩ 1/16W
C206
1uF/25V
VCC5V
R214 delete
R206 R208
10KΩ 1/16W 10KΩ 1/16W
R216 R215
R207 4.7KΩ 1/16W 100KΩ 1/16W
1 Q204
PMBS3904
C207
0.1uF
42
Confidential - Do Not Copy
VCC5V
VCC12V
R202
VCC12V 6
10KΩ 1/16W
C201 R212 4.7KΩ 1/16W
VCC5V+
1
VCC5V
0.1uF Q201
VCC5V 3,4,6
PMBS3904
C
VCPU
B E
VCPU 6
C205
0.1uF
NEW
Circuit
VLCD
VLCD 5
VCC5V VCC3.3 VCC12V
R209 R210
Q203
AO3401 0Ω 1/16W NC
C217
0.068uF
C208 R211
+
100uF/16V
10KΩ 1/16W
VA502mb-1
VCC5V+
SOT-252
D202
U201
GS1D
RT9164
3
C210
0.1uF
onBACKLITE 6
VCC5V+
TO-263
U202
AIC1084-33M
3 2
VIN VOUT
1
ADJ
C214 C215
0.1uF 47uF/16V
R213
NC
VCC2.5
2
VI VO VCC2.5
C211 C212
+
47uF/16V 0.1uF
VCC3.3
VCC3.3 4
VAA1
VAA1 4
C216 VAA2
+
0.1uF
VAA2 4
VAA3
VAA3 4
VAA4
VAA4 4
ViewSonic Corporation
Model
Title
POWER
Date Rev:
4