Factory Mode (Service Mode)
Press the
following key sequence on a standard RC transmitter: “1999” directly followed
by MENU.
Software Upgrading, Panel PN
Software Upgrading
Method 1: The following update is for .bin
file.
1. Rename the file to
“MstarUpgrade.bin”
2. Prepare a USB memory.
3. Copy the software to USB flash
disk(root directory).
4 Press
[menu+1999 ],enter the factory menu, Choose [main Updates], then press
5. Software update menu
will pop up when press confirm key, then select “Yes” to confirm:
6. When the TV software is
updated, the TV will turn on again automatically. Remove your USB flash drive.
Method 2
Copy
the software to USB flash disk ,Keep pressing VOL+ key on the machine panel,
power on the machine, the standby light flashes quickly after about 5 seconds,
standby light extinguish and turn into lighting after about 3 minutes, means
that the upgrade is
completed.
Caution：
When
the machine Upgrading (U disk light flash), do not remove U disk or switch off
the power, otherwise it will destroy the software and lead cannot upgrade.
The machine must be power off when inserted or pulled out U disk, to avoid U
disk or damage the machine.
Panel PN
Press
the following key sequence on a standard RC transmitter: “1999” directly
followed by MENU, can see the panel type information from factory menu, see the
Panel PN from the configuration table.
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 platform are:
New power architecture for LED backlight
“Boost”-signal is now a PWM-signal + continuous variable
The control signals are:
PS-ON
Lamp “on/off”
DIM (PWM) (not for PSDL)
No detailed information is available because of design protection issues.
+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.
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.
DC/DC Converters
The
on-board DC/DC converters deliver the following voltages(depending on set
execution):
+5V, permanent voltage for the Stand-by Power system
+3V3-STANDBY,voltage for IR/Key board
+12V, input from the power supply for the panel common(active mode)
+12V-AUDIO1 for the AUDIO AMP
+1V8(AS1117-18))-EMMC, +V-EMMC-IO, voltage for EMMC when TV on
+1V5-DDR, voltage for DDR in main chip
TUNER_3V3(AS1117-33), supply voltage for tuner
+5V-SW, input intermediate supply voltage for USB Power,-WIFI,voltage for WIFI
+1.2VA_T2(MSH61110A1), +1.2V_T2 voltage for DTMB.
+1V2A(MSH61110A), supply voltage for MSD6A638
Video and Audio
Processing - MSD6A638
The
MSD6A638 is the main audio and video processor (or System-on-Chip) for this
platform. It has the following features:
1. Worldwide multi-standard analog TV demodulator
2. ATSC/DVB-T/DVB-C/DTMB/ISDB-T demodulators
3. UHD@60Hz direct drive
4. Powerful CPU core
5. A transport de-multiplexer
6. A muti-standard video decoder (including VP9)
7. Rich format audio codec
8. H.264 & VP8 encoder
9. HDMI 2.0 receiver with 3D support
10. MHL 3.0 & Standby Charging
11. Ethernet MAC+PHY
12. Local dimming (LED backlight)
13. Two-link LVDS, V-by-one
OVERVIEW
The MediaTek MSD6A638 family consists of a DTV front-end demodulator, a backend
decoder and a TV controller and offers high integration for advanced
applications. It integrates a transport de-multiplexer, a high definition video
decoder, an audio decoder, a two-link LVDS transmitter, a V-by-One transmitter,
and a NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL). The MSD6A638 enables
consumer electronics manufacturers to build high quality, low cost and
feature-rich DTV.
World-Leading Audio/Video Technology: The MSD6A638 supports Full-HD
MPEG1/2/4/h.264/DiviX/VC1/RM/AVS/VP6/VP8 and HD .264/AVC, 265/HEVC, VP9 video
decoder standards, and JPEG. The MSD6A638 also supports MediaTek MDDiTM
de-interlace
solution which can reach very smooth picture quality for motions. A 3D comb
filter added to the TV decoder recovers great details for still pictures. The
special color processing technology provides a natural, deep colors and true
studio quality video. Moreover, the MSD6A638 family has built-in high
resolution and high-quality audio codec.
Rich Features for High Value Products: The MSD6A638 family enables true
single-chip experience. It integrates high-quality HDMI2.0, high speed VGA ADC,
two-link LVDS, V-by-One,USB2.0/3.0 receiver, Ethernet MAC+PHY, Quad core CPU
and 512K bytes L2 cache,
OpenGL ES 1.1/2.0/3.0/3.1, OpenCL 1/0/1.1/1.2 compliant 3D graphic engine, and
ATSC/DVB-T/DVBC/DTMB/ISDB-T demodulators.
All New UHD@60Hz Experience: The MSD6A638 family provides consumers with UHD
60Hz direct drive.
WW Common Platform Capability: The MSD6A638 family supports ATSC, DVB-T,
DVB-C,DTMB and ISDB-T demodulation functions.
It reserves transport stream inputs for external demodulators for other
countries or areas. TV maker can easily port the same UI to worldwide TV
models. First-class adjacent and co-channel rejection capability grants
excellent reception.Professional error- concealment provides stable, smooth and
mosaic-free video quality.
Power board circuit
diagram
Audio amplifier circuit
diagram
