Philips 19HFL3007D/10 Service Manual page 31

7.2 Power Supply
Refer to figure Figure 7-2
platform.
Display power
PFC
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-signal + 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:
for the power architecture of this
Ac-input + Mains filter
Figure 7-2 Power Architecture xxHFL30xxx/10
Circuit Descriptions
Platform power
BL-ON/OFF
DIM
12V
24V
5V
Low stby
power
AC IN
• 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
no.
Descr.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
back to
div. table
TPM9.3HE LA 7.
AMP
24V
Platform
MTK5366
CN7001
/CN700
1 power- PCB
Connector
xxHFL3007D/10 22HFL3017
CN8101 CN9101 CN8101
to panel to SSB to panel
CN8101 CN9101 CN8101
LED1 NC LED1
LED2 +5.2V LED2
VLED+ +5.2V VLED+
LED3 NC LED3
LED4 +16 V LED4
- +16 V -
- GND -
- GND -
- GND -
- NC -
- NC -
- DIM -
- ON/OFF -
EN 31
LVDS
12V
19240_202_120224.eps
120925
CN9101
to SSB
CN9101
NC
+5.2V
+5.2V
NC
+16 V
+16V
GND
GND
GND
NC
NC
DIM
ON/OFF
2012-Sep-28