Philips TPM14.1L Service Manual page 35

7.2 Power Supply
Refer to figure Figure 7-3
platform.
CN8101(FOR 715G6169/715G6197/715G6297)
CN8501(FOR 715G6161/715G6163)
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 TPM14.1L 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:
• +4V7-STANDBY (Stand-by mode only)
• +12V (on-mode)
• +Vsnd (+12V) (audio power) (on-mode)
• +12V (bolt-on power) (on-mode)
for the power architecture of this
Ac-input + Mains filter
Figure 7-3 Power Architecture
Connector
Number CN9101 CN9101 CN9301
Description to SSB to SSB to SSB
Pin 14 14 14
1 DIM DIM DIM
2 On/off On/off On/off
Circuit Descriptions
Platform power
BL-ON/OFF
DIM
12V-Audio
12V
+12V-AL
Low stby
power
AC IN
CN9901
• 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 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
CN9904 CN8101 CN8101
to SSB to panel to panel
14 12 8
DIM VLED+ LED1
ON/OFF n.c. LED2
back to
div. table
TPM14.1L LA 7.
AMP LVDS AMP
12V
Platform
MT5561
CN701
1 power- PCB
19620_201_140111.eps
CN8501 CN8501
to panel to panel
8 12
VLED+ LED1+
VLED+ n.c.
EN 35
12V
140111
2014-Mar-07