Circuit Descriptions
EN 27TPM15.1E LA 7.
2015-Jun-12
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7.2.3 Connector overview
Table 7-1 Connector overview
7.3 DC/DC Converters
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
• +5V-STANDBY, transform from 12V, permanent voltage for
the Stand-by controller.
• +12V, input from the power supply for the panel
common(active mode)
• +12V, input from the power supply for the AMP
• +1V2, from the power supply for the scaler IC MT5580
• +1V5, supply voltage for DDR3
• +3V3, genenal supply voltage
• +5V, supply voltage for USB and CAM
• +3V3-TUN, supply voltage for tuner
• +5V-USB, input intermediate supply voltage for the USB
Power
• +3V3, from the power supply for the scaler IC MT5580
• +3V3-DVBS, clean voltage for DVB-S2 channel decoder
• +1V2-DVBS, core voltage for DVB-S2 channel decoder
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
Figure 7-3 DC/DC converters
Number
Connector
32" 40" 55"
CN9101 CN8602 CN9101 CN8101 CN9301 CN8101
Description to SSB to Panel to SSB to panel to SSB to panel
Pin 16 8 14 12 14 12
1 DIM VLED+ DIM VLED_1+ DIM VLED+
2 On/off VLED+ On/off n.c. On/off n.c.
3 PS_ON n.c. PS_ON VLED_1- PS_ON VLED_1
4 n.c. n.c. 2D/3D VLED_1- 2D/3D VLED_1
5 GND LED_ GND n.c. GND n.c.
6 GND LED_ GND n.c. GND n.c.
7 GND n.c. GND n.c. GND n.c.
8 GND n.c. GND n.c. GND n.c.
9 +12V_A - +12V-AUDIO VLED_2- +12V-AUDIO VLED_2
10 +12V_A - +12V-AUDIO VLED_2- +12V-AUDIO VLED_2
11 +12V - +12V n.c. +12V n.c.
12 +12V - +12V VLED_2+ +12V VLED+
13 +12V - +12V_AL - +12V -
14 +12V - +12V_AL - +12V -
15+5.2V-----
16+5.2V-----
19780_202.eps
P12V
3.3 V
AVDD3 V3
3V3SB
AVDD1V2
DV1.2
5V_SW
5V_SW
5V_USB
DVD3V3
PVDD
FB755
FB754
AMP STA381BWTR
U703
U702
Q702
USB
U703
U705
U102
CI-VCC
Tuner
MT5580
U4250
U105
WIFI VCC
DDR
Demond IC
EMMC
Keyboard
MT5580
MT5580
5VSB
P12V
PANEL_VCC
Q750
+12V
1.5V
U701