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7.2
Main Supply
All Power Supply Units deliver the following voltages to the
chassis:
•
+12V for AMP
•
+ 5V for USB, STBY, TUNER, Panel_PWR
•
+3.3 V for SD-RAM, Scalar, HDMI SWITCH, USB2, AVDD,
VDDP
•
+2.6 V for VDDM, DDR
7.2.1
Panel Sets
The Panel set in this chassis comes with a buy-in LG supply
units:
5V3
18V
Table 7-1 IPB Power connectors
19PFL3404/12
22PFL3404/12
Pin
CN851 CN853
CN831 CN833 CN851 CN853
1
HVR
HVR
2
HVR
HVR
3
-
-
4
-
-
5
-
-
6
-
-
7
-
-
8
-
-
9
-
-
10
-
-
11
-
-
TPS62203
+5V_STBY
CN902
SI4835
1
BEAD FB7115, for w/o WT6703F
2
3
4
5
6
7
8
9
10
11
3V3 STBY
SI4835
SI4835
+12V
SC4525A
SI4835
SC4524B
5V_SW
SC4524B
Figure 7-3 High level Power Architecture
19&22PFL3404/12
CN902
INV-ON/OFF
BRIGHTNESS
+5V3
+5V3
GND
GND
GND
+18V
+18V
NC
Standby
Circuit Descriptions
•
LC190WH1
•
LC220WXE
This supply unit delivers the power for the display. Refer to
chapter "Circuit Diagrams and PWB Layouts". The power
supply for the SSB is located on the SSB itself.
The connector to the SSB-platform is CN902, which has all the
basic requirements for the SSB-power.
When defective, a new panel must be ordered and the
defective panel must be sent for repair, unless the main fuse of
the panel is broken. Always replace a defective fuse with one
with the correct specifications! This part is available in the
regular market.
+3V3_STBY
(WT6703F)
AME1117
5V_SW
3V3_SW
3V3_HD_SW
(DVR601RT)
(TMDS261)
AIC1084PE
(MST9A885GL)
AVDDA
(MST9A885GL)
AVDD_MPLL
(MST9A885GL)
VDDP
(MST9A885GL)
SC4524B
1V2
VDDC
(MST9A885GL)
AME1117
3V3
AVDD_USB2
(SD RAM)
(MST9A885GL)
(MST9A885GL)
(STMPS2171STR)
AVDD_AU
(HDMI SWITCH)
(MST9A885GL)
AVDD_MemPLL
(MST9A885GL)
AVDD_VIF1
(MST9A885GL)
AVDD_VIF2
(MST9A885GL)
AVDD_VIF5
(MST9A885GL)
AME1117
2V6
VDDM
(DDR)
(MST9A885GL)
(MST9A885GL)
TUNER
USB5V
(STMPS2171STR)
Panel_PWR
+12V_SW
+12V_AMP
(TPA3123)
SI4835
5V2
Panel_PWR
USB5V
Panel_PWR
3V3_SW
3V3
TPS2.1E LA
7.
CN7502
LVDS
30
30
29
29
28
28
27
27
26
26
25
25
24
24
23
23
22
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
18250_204_090210.eps
EN 21
090318
2009-Apr-10
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