Circuit Descriptions
7.
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, permanent voltage for the Stand-by
controller, LED/IR receiver and controls.
•
+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 DDR2 ( diagram B03B)
•
+3V3, genenal supply voltage
•
+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 Demodulator IC channel
decoder.
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
Number
Connector
40" & 43"
48"
55"
CN9101
CN8601
CN9101
CN8101
CN9101
CN8101
Description
to SSB
to Panel
to SSB
to panel
to SSB
to panel
Pin
14
13
14
14
14
12
1
DIM
VLED+
DIM
VLED+
DIM
VLED+
2
On/off
n.c.
On/off
n.c.
On/off
n.c.
3
PS_ON
VLED_1
PS_ON
VLED-1
PS_ON
LED1
4
n.c.
VLED_1
n.c.
VLED-1
3D_ON
LED1
5
GND
VLED_1
GND
n.c.
GND-
LED1
6
GND
LED_a
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_AUDIO
n.c.
+12V_AUDIO
n.c.
+12V_AUDIO
LED2
10
+12V_AUDIO
VLED-
+12V_AUDIO
n.c.
+12V_AUDIO
LED2
11
+12V
VLED-
+12V
VLED-
+12V
NV
12
+12V
n.c.
+12V
VLED-
+12V
VLED
13
+12V_AL
VLED+
+12V_AL
n.c.
+12V
-
14
+12V_AL
-
+12V_AL
VLED+
+12V
-
15
-
-
-
-
-
-
16
-
-
-
-
-
-
19840_202.eps
5VSB
MT5580
+12V
SOP8
MOS- A4449
PANEL
G5655P12U
TUNER_3.3V
TUNER
USB *1
SOP8
USB_5V
TUNER_3.3V
G1117T63UF
SOT223
3V3SB
SOP8
MOS- A4449
5V
TO252
G1084-33TU3Uf
MT5580
3.3V
Demodulator IC
NAND Flash
AUDIO - TAS5760LD
SOP8
PWM- AT1529
1.5V
DDR3
UP1734PSW8
SOP8
1.2V
Demodulator IC
MT5580
DC-DC 1.2V
SOT223
12V AMP
Amp TAS5760LD
1.2V
+12VSB
SOP8
G5759F11U
FB701
FB702
FB705
FB6001
+12VSB
7A
2A
300mA
4A
1A
7A
50mA
3.2A
5A
5A
1A
4A
800mA