Circuit Descriptions
EN 32 QM16.4E LA7.
2016-Apr-1
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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):
• +STB_PWR, permanent voltage for the Stand-by Power
system and WIFI.
• +3V3SB,voltage for scaler,EMMC,IR/LED reciver,Key
board
• +12V, input from the power supply for the panel
common(active mode)
• +12V, input from the power supply for LNB supply
• LDO_PWR,DVDD3V3, voltage for EMMC when TV on
• DDRV, VCCK, voltage for DDR
• AVD3V3,AVDD1V0, supply voltage for scaler MT5593
• +5V_SW, USB port supply voltage
• +3V3_TUNER, supply voltage for tuner
• +5V-USB, input intermediate supply voltage for USB
Power
• PVDD from the power +12V_AU for the AUDIO AMP
• DV12, +3.3V_T2, +3.3VA_T2 voltage for Demodulator IC
channel
• Wi-Fi_VCC,voltage for WIFI
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
Figure 7-3 DC/DC converters
Number
Connector
CN9101 CN8602 CN9101 CN8603 CN9101 CN8603
Description to SSB to panel to SSB to panel to SSB to panel
Pin 14 8 16 12 16 12
1 DIM VLED+ DIM VLED+ DIM VLED+
2 On/off VLED+ BL_ON/OFF n.c. BL_ON/OFF n.c.
3 PS_ON n.c. PS_ON VLED- PS_ON VLED-
4 PS_ON n.c. 3D_ON VLED- A3D VLED-
5 GND VLED- GND VLED- GND VLED-
6 GND VLED- GND n.c. GND n.c.
7 GND VLED+ GND n.c. GND n.c.
8 GND VLED+ GND VLED- GND VLED-
9 +12V-AUDIO - +12V-AUDIO VLED- +12V-A VLED-
10 +12V-AUDIO - +12V-AUDIO VLED- +12V-A VLED-
11 +12V - +12V n.c. +12V n.c.
12 +12V - +12V VLED+ +12V VLED+
13 +12V - +12V - +12V -
14 +12V - +12V - +12V -
15--+3.5-+5v-
16--+3.5-FLAG-
STB_PWR
+12V
5V_SW
+12V_AU
U601 TAS5760LD
DC/DC U4251
AP7362
DC/DC U704
RT7299B
DC/DC U751
MP8124
DC/DC U708
U705
AVDD3V3
DVDD3V3
AVDD1V0
VCCK 1.02V
+5V_SW
LNB POWER Supply
WIFI VCC 3.3V/1.2A
U712 G9091
3V3SB
U102
APL3511CBI
U710
RT8079ZOW
U710
AZ1084CS2
USB2.0 500mA
USB3.0 900mA
+3V3_TUNER
DV12
LDO_PWR
CI_VCC
DDRV 1.5V
PGOOD
20050_202.eps
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