Tuesday, January 22, 2013

STV-20L6 - STV-19L6 - STV-LM18 - SHIVAKI _ LCD TV_ SERVICE MODE _ PCB DETAILS _ FIRMWARE UPGRADE PROCEDURE




PCB DETAILS
  • L2M18 is a control board of Color Active Matrix Liquid Crystal Display, It is designed to be applied to LVDS (Low Voltage Differential Signaling) as the interface method to enable a simple  and low-cost implementation in both board and panel.  L2M18 is intended to support YPbPr&HDMI input and up to 1920x1080 FHD panel.  L2M18 also provides other very important functions, It supports PAL or SECAM color TV system for Europe.  Moreover. it can achieve Analog RGB input signal up to SXGA 1024 vertical /1280 horizontal pixel resolution. it also supports DVD(Option)/YPbPr /HDMI input.  L2M18 includes an audio amplifier which can support 2×3W(or 2x5W) audio power output. it supports NICAM/A2 stereo input and selects audio channels according to the input signal detection. OSD pictures are smooth and manual operating is very simple.
                                       L2M18 with 9E19/9U19 chipset; LCD TV control board.

CONNECTION PIN DETAIL


No
Description
No
Description

1
HDMI input
9
Speaker jack
2
DC input
10
DTV FPC interface
3
SCART
11
LVDS interface
4
PC audio output
12
Key jack
5
VGA input
13
DVD power supply jack
6
YPbPr input
14
IR jack
7
Headphone output
15
Inverter jack
9
RF input
16
DVD YpbPr jack.


Supported OSD language:
  • Arabian/Spanish/Portuguese/Swedish/German/French/Russian/Italian/Danish/Finnish/Greek/Norwegian/Dutch/Polish/Turkish/Lithuanian/Serbian/Chinese/Romanian/Blugarian/Lettish/Estonian Hungarian/Slovenian/Slovakian/Czech
  • L2M18 chassis only can support 8 countries OSD language caused by the flash rom size limitation. Please indicate which OSD language you needed when you place purchase order.
SOFTWARE UPGRADE PROCEDURE
  • Open 'Update Tools' - Mstar ISP utility.
  • Click “Device” button and double click select correctly type (For MST9E19 chassis select Pm25LV040 normally)
  • Click “Config” button and click “Auto Detect” button confirm that the PC and ISP tool connect properly. adjust the LPT port speed to 138K,in order to speed up update process.
  • Click “Read” button then select the binary file of firmware.
  • Click “Auto” button and remove the marker of “Blank” and “Verify” items. then click “Run”, after several seconds the update process will be finish.

SERVICE MODE DETAILS
  • Press “green” button on the remote control, the sound menu will be appear on the picture, then press and hold “OK” 3s,the service menu will be display on the picture.


Color Temp: select a color temperature mode that you want to adjust;
  • R Gain: red gain for white balance adjusting;
  • G Gain: green gain for white balance adjusting;
  • B Gain: blue gain for white balance adjusting;
  • R Offset: red offset for white balance adjusting ;
  • G Gain: green offset for white balance adjusting;
  • B Gain: blue offset for white balance adjusting;
  • Aging: to turn on or off aging mode, optional setting: On Off;
  • Auto config: auto adjust ADC channel difference, only available in VGA mode.
  • EEprom clear: reset EEPROM data to default value, all user’s program and setting will be lost.
  • Panel: select different panel for factory.
  • TTX language: select Teletext language, optional setting: West East Russia;
  • DVD source set: to turn on or off DVD source in the user menu, optional setting: On Off;
  • Hotel mode: to turn on or off hotel mode, optional setting: On Off;
  • Key mode:to turn on or off local keyboard, optional setting: On Off;
  • Power on: to setting the power on source, optional setting: TV Other;
  • Power mode: to setting the power on mode, optional setting: Force on Memory standby;
  • Volume:to setting the max sound volume when hotel mode is active;
  • AGC: to setting tuner’s RF AGC value;
  • Color temperature adjusting:in different source the white balance can be adjust separated.the details as below:
  1. DVD&YpbPr source use same group color temperature value.
  2. TV&Scart source use same group color temperature value.
  3. VGA&HDMI source use separated color temperature value.
  • Auto Config:please change source to VGA mode and with grey scale pattern then enter service mode to do this item.