Circuit Descriptions
EN 45QM15.2E LA 7.
2015-Sep-30
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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 CN8601 CN9101 CN8601 CN9101 CN8101 CN9303 CN8101 CN9102 CN9203
Description to SSB to panel to SSB to panel to SSB to panel to SSB to panel to SSB to panel
Pin 16 6 16 12 14 12 16 12 16 14
1 DIM VLED+ DIM VLED+ DIM +VLED DIM VLED+ +3.5V On/off
2 On/off VLED+ On/off n.c. On/off n.c. BL_ON/OFF n.c. +3.5V DIM
3 PS_ON n.c. PS_ON VLED- PS_ON -VLED1 PS_ON -VLED-1 +12V 3D
4 n.c. n.c. 2D/3D VLED- 3D_ON -LED1 3D_ON -VLED-1 +12V +12V
5 GND VLED- GND VLED- GND -LED1 GND -VLED-1 +12V GND
6 GND VLED- GND n.c. GND n.c. GND n.c. +12V GND
7 GND - GND n.c. GND n.c. GND n.c. +12V-A GND
8 GND - GND VLED- GND -LED2 GND -VLED-2 +12V-A GND
9 +12V-AUDIO - +12V-AUDIO VLED- +12V-A -LED2 +12V-A -VLED-2 GND GND
10 +12V-AUDIO - +12V-AUDIO VLED- +12V-A -LED2 +12V-A -VLED-2 GND +24V
11 +12V - +12V n.c. +12V n.c. +12V n.c. GND +24V
12 +12V - +12V VLED+ +12V +VLED +12V +VLED GND +24V
13 +12V_AL - +12V - +12V - +12V - 3D_ON +24V
14 +12V_AL - +12V - +12V - +12V - PS_ON +24V
15 +3.7v - +3.7v - - - +3.7v - On/off -
16 +3.7v - +3.7v - - - +3.7v - DIM -
19880_202.eps
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