Power Front-End; Power Back-End - Philips QM14.3E LA Service Manual

U005F
+V-LNB
DC/DC
U010U
+5V
DC/DC
U007U
+1V2-MTK
DC/DC
+12V
U011U
+1V5-MTK
Dual
DC/DC
+3V3
U028B
+1V0-M
+12V
Dual
DC/DC
+1V5-M
U026B
+2V5-M
LDO
+3V3
U025B
+3V3-NVT
Switch
Figure 7-6 Power Back-end
Circuit Descriptions
USB
1,2&3
LNB
CI
Skype
MTK
3D
emitter
LDO
MTK
DDR's
HDCP IC
+1V0-HDMI
LDO Rogue
Sil9679
U021C
+1V1-DVBT2
LDO
U002F
Figure 7-5 Power Front-end
Novatek
72314
Novatek
Novatek
DDR's
Novatek
IO supply
voltages
Novatek
19580_135_140320.eps
14-03-21
back to
div. table
QM14.3E LA
to back end
TUNER
+3V3-TUNER -
+3V3-DVBT
U003F
Channel
decoder
7. EN 27
Thermal
sensor
IR key
board
MTK IO
MTK
Ethernet
analog
Nand
flash,
eeprom
AmbiLight
+12V
Audio
amplifier
Spdif optical
output
19580_134_140320.eps
14-03-21
2014-Apr-17