Connector Overview; Dc/Dc Converters - Philips 32PFH5300 Service Manual

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
+12V 5VSB
P12V
P12V
Connector
32"
Number CN9101 CN8602
Description to SSB to Panel
Pin 16 8
1 DIM VLED+
2 On/off VLED+
3 PS_ON n.c.
4 n.c. n.c.
5 GND LED_
6 GND LED_
7 GND n.c.
8 GND n.c.
9 +12V_A -
10 +12V_A -
11 +12V -
12 +12V -
13 +12V -
14 +12V -
15 +5.2V -
16 +5.2V -
AVDD1V2
U702
3V3SB
U703
5V_USB
Q702
5V_SW
5V_SW
FB754
FB755
Q750
Figure 7-3 DC/DC converters
Circuit Descriptions
40"
CN9101 CN8101
to SSB to panel
14 12
DIM VLED_1+
On/off n.c.
PS_ON VLED_1-
2D/3D VLED_1-
GND n.c.
GND n.c.
GND n.c.
GND n.c.
+12V-AUDIO VLED_2-
+12V-AUDIO VLED_2-
+12V n.c.
+12V VLED_2+
+12V_AL -
+12V_AL -
- -
- -
• +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 :
MT5580
MT5580
Keyboard
USB
DVD3V3
U703
AVDD3V3
MT5580
3.3V
U705 Tuner
U102 CI-VCC
back to
div.table
TPM15.1E LA
55"
CN9301 CN8101
to SSB to panel
14 12
DIM VLED+
On/off n.c.
PS_ON VLED_1
2D/3D VLED_1
GND n.c.
GND n.c.
GND n.c.
GND n.c.
+12V-AUDIO VLED_2
+12V-AUDIO VLED_2
+12V n.c.
+12V VLED+
+12V -
+12V -
- -
- -
U4250
1.5V
U701
DV1.2
U105
EMMC
PVDD
AMP STA381BWTR
PANEL_VCC
7. EN 27
WIFI VCC
DDR
Demond IC
19780_202.eps
2015-Jun-12