Power Supply; Power Supply Unit; Power Architecture - Philips QM14.3E LA Service Manual

EN 26 7. QM14.3E LA
7.3

Power Supply

7.3.1

Power Supply Unit

All power supplies are a black box for Service. When any of
these power supplies is defective, a new board must be
ordered and the defective one must be returned, unless the
main fuse of the board is broken. Always replace a defective
Fully integrated PSLS
Display
interfacing
Display power
U028B
+12V
Dual
DC/DC
U026B
LDO
+3V3
U025B
Switch
Figure 7-4 Power PSU-Connector
2014-Apr-17
Circuit Descriptions
Platform power
Low Stby
power
PFC
Figure 7-3 Power Architecture
Novatek
+1V0-M
72314
Novatek
+1V5-M
Novatek
DDR's
+2V5-M
Novatek
IO supply
+3V3-NVT
voltages
Novatek
19580_135_140320.eps
14-03-21
fuse with one with the correct specifications! This part is
available in the regular market.
Consult the Philips Service web portal for the order codes of the
boards.
7.3.2

Power Architecture

For the power architecture, refer to figure
BL-ON/OFF
DIM
+12 V
+3V5 Stby
AC-input
+
Mainsfilter
AC-in
back to
div. table
7-3
AMP LVDS AMP
+12 V
+12 V
Platform
MTK5591
1 power-PCB
19580_132_140318.eps
14-03-18