
Circuit Descriptions
7.
7.2
Power Supply
Refer to figure
for the power architecture of this
platform.
Figure 7-4 Power Architecture ( for 30xx series)
7.2.1
Power Supply Unit
All power supplies for TV’s that are using a LED back lit LCD
panel are under repair policy. When defective, first check the
main fuse of the power board. Always replace a defective 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.
Important delta’s with the xxHFL3XXXD/10 series platform are:
•
New power architecture for LED backlight (PSL, PSLS,
PSDL)
•
“Boost” signal is now a PWM- continuous variable.
The control signals are:
•
Stand-by
•
Inverter “on/off”
•
DIM (PWM) (not for PSDL)
In this manual, no detailed information is available because of
design protection issues.
The output voltages to the chassis are:
•
+5V-STANDBY (Stand-by mode only)
•
+12V (on-mode)
•
+Vsnd (+24V) (audio power) (on-mode)
•
+24V (bolt-on power) (on-mode)
•
Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
7.2.2
Diversity
The diversity in power supply units is mainly determined by the
diversity in displays.
The following displays can be distinguished:
•
CCFL/EEFL backlight: power board is conventional IPB
•
LED backlight:
- side-view LED without scanning: PSL power board
- side-view LED with scanning: PSLS power board
- direct-view LED without 2D-dimming: PSL power board
- direct-view LED with 2D-dimming: PSDL power board.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers
with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight
with 2D-dimming.
7.2.3
Connector overview
Table 7-1 Connector overview
Display power
Platform
MTK5366
PFC
Platform power
1 power- PCB
AMP
LVDS
Low stby
power
Ac-input + Mains filter
BL-ON/OFF
AC IN
DIM
12V
12V
24V
24V
5V
CN7001
/CN700
19240_202_120224.eps
120925
Connector
32HFL30X7
42HFL30x7
no.
CN8101
CN9302
CN8503
CN902
Descr.
to panel
to SSB
to panel
to SSB
Pin
CN8101
CN9304
CN8503
CN902
1
VLED
P_OK
LED-11
P_OK
2
n.c.
+5.2V
LED-16
+5.2V
3
LED3
+5.2V
LED-12
+5.2V
4
LED6
PS_ON
LED-15
PS_ON
5
LED2
+24V
LED-14
+24V
6
n.c.
+24V
-
+24V
7
n.c.
GND
VLED
GND
8
LED5
GND
-
GND
9
LED1
GND
-
GND
10
LED4
+12V
-
+12V
11
n.c.
+12V
-
+12V
12
VLED
DIM
-
DIM
13
-
ON/OFF
-
ON/OFF