Schematic Diagrams - ViewSonic N2230w-2M Service Manual

8. Schematic Diagrams

8.1. System Power
9 1
12V
12V 13
L102 40uH DIP
C108 C109
100nF/0603/50V C110
P101
1500u/16V LESR
100nF/0603/50V
1
BKLON
2
ADJPWMA
3
4
5
6
L123 600uH DIP/NC L103 80R 0805 6A
7
8
9
L104 80R 0805 6A
L101
DUAL BEAD 100R C101
+
1500u/16V LESR
L120 600R/1.5A 0805 measure current
12V
C162
+ C160 C161 R180
6
SW
470u/35V/LESR 100nF NC
5
IN
4
EN
I109 MP2359DJ/TSOT23-6
R181
NC
ONLY C617 C142 C141ARE 50V OTHER IS 16V
CHIP CAP
L112
+5V_General
L113
C137
+ C140
5
V_IN
470u/16V 100nF
4
SHDN
I106
FP6736S5PTR SOT23-5/SMD
Power Management
6 PANEL-ON/OFF-GPIO10
ViewSonic Corporation
0 ~ 5v
R102 NC R103 NC
ADJPWMA
VCC5V-ST
Q102
2
VCC5V-ST
C103 + C102 R104 3
1
VCC5V-ST 6,13
NC NC NC
R105
3904/NC
NC
+ C111
NC
R106 100
R107 10K
VCC5V-ST
5VAMP 12,13
BKLON
R108 0 0603
5VAMP
R139 0 Q101
2
3 R101 1K
C112 VBLCTRL-GPIO44
1
NC
3904/NC
C115 C114 R109
+
100nF NC NC
L121 NC
L122 15uF
100nF
100K 1% 0603
D136 + C165 C163 R182 R183 C166 C164 +
NC
1
BST SR36
47u/16V 100nF 100nF
100K 1% 0603
2
GND
3
FB
R184 4K75 1% 0603
TOM R185
4K75 1% 0603
measure current
10uH
C141 30VTU
NC D103 SR36 100nF/50V 0603
30VTU 4
C138 C142
+
1
SW
1u/50V 100nF/50V 0603
Rb
2
GND
Ra
3 R125
FB
R127 11K5 1% 0603 274K1% 0603
measure current
L114 80R 0805 6A
VCC5V-ST
VCC5V-ST
R129 C143
10K 100nF
R130
200K
R131
10K Q105
1
VCC5V-ST
MMBT3904
R141
NC
R133
PANEL-ON/OFF-GPIO10 4.7K Q106
1
MMBT3904
R135
10K 1 Q107
VCC5V-ST
MMBT3904
R142
NC
R136
POWER-ON/OFF-PWM2 4.7K Q108
6 POWER-ON/OFF-PWM2 1
MMBT3904
58
N2230w-2M
Confidential - Do Not Copy
BRI_ADJ-PWM1 6
VBLCTRL-GPIO44 6
5VIF
5VIF 4
VCC5V-ST
C167
220u/16V LESR R187
Q120
R186 4K7 47K Q121
POWER-ON/OFF-PWM2 R188 4K7
1
B
SOT 3 1
C B
23 SOT
2 3
E C
2 23
E
MMBT3904
MMBT3904/NC
R189 4K7
1.2V Core Power
VCC5V-ST
L110
600R/1.5A 0805
VCC5V_IN
R123
C131 3K 0603 VCC5V_OCSET
+ C133 R124
100u/16V 100nF C136 100K 0603 VCC5V_EN
100nF
C139
100nF
VCC1.2V_FB
R128
1.62K 1% 0603
I107
STM4953
1 8
PANEL-VCC 14
S2 D2
2 7 PANEL-VCC
G2 D2
3 6
+5V_General
S1 D1
4 5
G1 D1 +5V_General 3,8,10,15
measure current
R132 C144
10K 100nF
R134
200K
3.3V Stand-by Power
VCC3.3V-ST
I103 1084-3.3
3 2
VIN VOUT
VCC5V-ST
1 4
ADJ TAB
C118
100nF R110
C119 VCC3.3V_ADJ NC
+
R111
10u/16V 0R
2.5V Power
VCC2.5V-ST
I104 1084-ADJ
600R/1.5A 0805 D133 GS1B
3 2
VIN VOUT
L108
VCC5V-ST
L109 NC 1 4
+5V_General
ADJ TAB
R117
C130 VCC2.5V_ADJ 100R 1% 0603
TOM C129 100nF R120
+ R1
110R 1% 0603
10u/16V
R2
Vout=Vref*(1+R2/R1)+Iadj*R2
Vref=1.25V
L124 NC
I105 L111
measure current VCC1.2V-ST
AP1533/AP1534 22uH/2.9A
VCC1.2V_OUT
4 5
VCC OUTPUT VCC1.2V-ST 6
3 6
OCSET OUTPUT
D102 + C132 + C134 C135
100nF
2 7
EN VSS SR36
220u/16V LESR 1u/50V
1 8
FB VSS
R126
RA
1K 1% 0603
Vout=VFB*(1+RA/RB)
RB
VFB=0.8V
RB=0.7K~5Kohm
VCC3.3V-ST 6,10
+ C116 C117
100nF
220u/16V LESR
VCC2.5V-ST 6,7
+ C127 C128
100nF
220u/16V LESR