Circuit Descriptions
7.
7.2
Power Supply
Refer to figure
for the power architecture of this
platform.
Figure 7-2 Power Architecture xxHFL30xxx/10
7.2.1
Power Supply Unit
All power supplies are a black box for Service. When 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 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 xxHFL30xxx/10platform are:
•
New power architecture for LED backlight
•
“Boost”-signal is now a PWM- continuous variable.
The control signals are:
•
Stand-by
•
Lamp “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
- 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:
•
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
xxHFL3007D/10
22HFL3017
no.
CN8101
CN9101
CN8101
CN9101
Descr.
to panel
to SSB
to panel
to SSB
Pin
CN8101
CN9101
CN8101
CN9101
1
LED1
NC
LED1
NC
2
LED2
+5.2V
LED2
+5.2V
3
VLED+
+5.2V
VLED+
+5.2V
4
LED3
NC
LED3
NC
5
LED4
+16 V
LED4
+16 V
6
-
+16 V
-
+16V
7
-
GND
-
GND
8
-
GND
-
GND
9
-
GND
-
GND
10
-
NC
-
NC
11
-
NC
-
NC
12
-
DIM
-
DIM
13
-
ON/OFF
-
ON/OFF