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SW1
SW_MOM_4P
RSTn
2
1
3
4
RESET
To RESET PW106
v.
PANELVCC ON
In the period of POWER ON, the signal of control PANELVCC output a Hi level signal from PW328
I/O port PNLPWR, PANELVCC will supply power to Panel via LVDS output Header
PANELVCC ON/OFF
For 37" LG AUO Panel
V12
VCC
For 32" Samsung Auo Panel
P{9}
PNLPWR
vi.
INVERTER ON
When POWER ON, the signal of control Backlight-ON will output from I/O port BKLTPWR of U18
PW328 via Q20, Q19 to 13
Power Supply forwards the signal to the Inverter of Panel and turn it
INVERTERON/OFF
P{9}
BKLTPWR
vii.
BACKLIGHT ADJUST
The signal of Backlight Adjust which output from PWM I/O port of U18 PW328 sending a PWM
signal to U42 C491 converged into a DC signal then forward to Inverter of Panel via 12
to adjust the brightness of Backlight.
ViewSonic Corporation
V33
RESET IC
U19
R141
G
GND
2.2K_NC
I
VCC
R
RESET
CAT809RTB
L119
PBY20-221
L120
PBY20-221
R335
10K
th
pin of J11 and sends to Switching Power supply. Then Switching
Vsub
R324
10K
R325
10K
B
Q20
R326
3904
10K
V33
V33
R140
5.6K
C193
100U
1
2
U20
74LVC1G126
1
2
3
R331
10K
4
R334
10K
B
Q22
3904
For 32" Power
VCC
For 37" Power
R322
C492
510
.1
C493
G
10U_NC
Q19
2N7002
9
Confidential - Do Not Copy
C194 .1
4
RESETn
P{2,4,12,14,15}
To RESET TUNER, HDMI
MSP4440K,PWM2030
J4.
Q21
PANELVCC
AP4435M
8
S1
D1
7
S1
D1
6
S1
D1
5
G1
D1
C502
100U
on.
V12IN
R318
0_NC
0
R319
Vsub
Backlight ON=4.5V
th
pin of J11
N4261w-1M
C503
.1
J11
1
2
3
4
5
6
7
8
9
10
11
12
13
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