1 682 342 81 : AUS, SS etc.
1 682 343 78 : INDIA
Method
of software upgrading
Steps of software upgrading are as follows
1. Select a serial connection wire and a VGA connection wire and then connect
them by means of a patch panel;
2. Use a serial wire to connect the PC to the patch panel and set TV set to off
state; Open the software upgrade file folder and double click FlashUpgrader.exe
(window 2000/XP/NT)
The following interfaces will show up after running the program.
Based on the computer features,
set up the serial port (COM Port).
Select corresponding serial port (if it’s
unable to FLASH WRITE, change to another port).
Baud is selected to be 115200.
Then select Reset Target After Download.
Click FLASH push-button, it’s ready to
run.
For other settings, please refer to the Fig. Above (already defaulted by
the system, normally no need to change).
Switch on TV set the FLASH write program begins to run;
When the upgrading is complete, a
window (below) will be opened.
Press “Finish” button to complete the process.
Note: Do not shut the power off or turn the TV set on during the FLASH write.
Otherwise it may lead to no way for flash to rewrite.
To Enter the factory menu press 1→ 9 →
7 →9 button in the window menu state.
The unit has two MCU, the main
MCU is PW218 (N601): it is used to control all the chips’ working status on the
main board (including image processing, channel switch, sound processing, image
display etc.), sub CPU, OSD, searching channels, image effect adjustment,
buttons control, infrared remote control etc.; the sub CPU is ATMEGA8L (N606):
it is used to control power supply, including standby and turning on the unit
by using remote control etc.. The two MCU correlates with each other through pin 14 INT (interruption) of ATMEGA8L, pin 28 and 29 SDA, SCL.
The unit has one integrative tuner (including HF and IF amp. circuits).
The
signal received by antenna is sent to tuner, under the control of MCU PW218
(N601) SDA and SCL, proper channel selection and right system switching will be
done by the tuner, then video signal and audio signal will be output by the
tuner through decoding and by high and intermediate amplification. Video signal
of the tuner will then be sent to Decoder PW2300 (N201). Audio signal of the
tuner will then be sent to AV switch box M52797 (N400), the audio signal of
AV1, AV2 and HD2 of the main board will also be sent to M52797 (N400) at the
same time. The selected audio signal after switching will be sent to R2S15900
(N301), and then switching selection will be done towards the above audio
signal together with the audio signal of VGA, HDMI and HD1. The two chips are
controlled by PW218 (N601), after the above process the finally selected way
will be set to X300 earphone socket after under the control of volume, treble
and bass which is finished by R2S15900 (N301), the earphone socket has the
switching function, when earphone is plugged, sound will be sent to earphone amplifier NJW1109 (N302), then sent back to earphone socket after
power amplification.
If earphone is unplugged, sound will be sent to sound amplifier TPA3008 to do
amplification and then sent to speaker.
Image parts:
Video signal of the tuner will be sent to AV switch box M52797 (N400), video
signal of AV1 and AV2 will also be sent to M52797 (N400) at the same time, two
groups of video output will be obtained after switching, one group of video
output together with its audio output will be sent to AV_OUT terminal to treat
as AV OUT. The other group of video output together with other video signals
such as S-VIDEO, YpbPr1, YpbPr2 and VGA will be sent to PW2300 to do video
decoding or AD transformation, then output 24bit digital RGB signal and some
corresponding synchronous signals.
Items such as 3D comb filter, channel switching, 5 lines Y/C separation and
color decoding etc. are primarily done by PW2300. 24bit digital RGB signal and
some corresponding synchronous signals outputted by PW2300 will then be sent to
PW218 (N601). HDMI signal will also be sent to AD9398 (N101) to de decode and
output 24bit digital RGB signal as well as some corresponding synchronous
signal, which will be sent to PW218 (N601).
PW218 is a new generation chip of Pixelworks, which has ability to deal with images, 24bit digital RGB signal and
some corresponding synchronous signals outputted by AD9398 and PW2300 will be
sent to this chip to deal with images.
The chip has functions such as converting from interleaved into line-by-line
and image enhancement etc.. PW218 has SCALER function which can do format
conversion towards different input formats so as to meet the format needs of
the screen and finally output 24bit RGB signal. The interface standard of PDP
screen is generally LVDS (low voltage differential signal), so the digital RGB
signal outputted from PW218 is needed to send to converting interface chip N6
DS90C387 of LVDS to obtain LVDS signal, then it will be sent to the screen. PW218 is also
the main CPU, its programs are stored in periphery device flash N701, and
software upgrade through RS-232 interface is virtually upgrading the stored
programs through PW218 towards N701.
High definition 1080P LCD
16:9 wide screen
Support several kinds of HDTV wide voltage range, low standby power consumption
(less than 1W)
One group of D-SUB, S-VSH (Y/C), RS232, AVOUT, HEADPHONE, HDMI, two groups of
YPbPr/YCbCr, AV
SMPS Schematic
