Philips TPM16.1E LA Service Manual page 27

7.2 Power Supply
Refer to figure Figure 7-2
platform.
CN8602(FOR 715G7734)
CN8603(FOR 715G7574)
Display power
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 TPM16.1E LA classis platform 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:
• +3.7V output (standby mode)
• +12 output (on-mode)
• +12V_audio (audio AMP power)
• 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.
for the power architecture of this
Ac-input + Mains filter
Figure 7-2 Power Architecture
Circuit Descriptions
Platform power
BL-ON/OFF
DIM
PS_On
12V
12V_A
Low stby
power
AC IN
CN9901
The following displays can be distinguished:
• CCFL/EEFL backlight: power panel is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
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
Number
Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
back to
div.table
TPM16.1E LA 7.
AMP LVDS AMP
12V
Platform
MT5580
CN700
1 power- PCB
Connector
CN9101 CN8602 CN9101
to SSB to panel to SSB
16 6 16
DIM VLED+ DIM
On/off VLED+ BL_ON/OFF
PS_ON n.c. PS_ON/OFF
n.c. n.c. A3D
GND LED- GND
GND LED- GND
GND - GND
GND - GND
+12VA - +12V_A
+12VA - +12V_A
+12V - +12V
+12V - +12V
+12V - +12V
+12V - +12V
EN 27
12V
20220_201.eps
CN8603
to panel
12
+VLED
n.c.
VLED-
VLED-
VLED-
n.c.
n.c.
VLED-
VLED-
VLED-
n.c.
+VLED
-
-
2016-Nov-11