LCD TV 机芯系列 二. 规格参数 屏 类型 TFT-LCD 分辨率 Max. 1920X1080 接口 单/双 LVDS 3.3V、5V、12V 电压 30-75KHz 频率 行同步范围 56-75Hz 场同步范围 16777216 显示颜色 同步 行场分离,TTL, 正或负 0.7Vp-p@75ohm 信号 模式 UXGA 彩色系统 PAL SECAM、 NTSC 声音系统 B G D K I M N 频率范围...
1. Precautions and Safety Notices Prior to using this service manual, please ensure that you have carefully followed all the procedures outlined in the user’s manual for this product. (1) Read all of these instructions. (2) Save these instructions. (3) Follow all warnings and instructions a marked on the product. (4) Unplug this product from the wall outlet before cleaning.
2.Specification Model No. Display Piel 1336(H)×768(V) 1920(H)x1080(V) Pixel Pitch 0.3mm(H)×0.3(V) 0.248(H)x0.248(V) Active Display Area 409.8(H)×230.4(V) 477.50(H)x268.596(V) Pixel Type R+G+B vertical stripe R+G+B vertical stripe Number of Colors 16.7M 16.7M ±60°degree(H), ±60°degree(H), View Angle ±50°degree (V) Typical ±50°degree (V) Typical Brightness 200cd/m2 typical 230cd/m2 typical Brightness Uniformity...
Page 19
Speaker Out The Speaker Out Output Jack Shall Consist of 1. 3.5mm Mini-stereo ×1 Analog HD15 PC Signal (RGB) Format R, G, B Analog Level/Impedance 0.7Vp-p / 75 DDC 1/2B Compliant with Revision 1.0 Sync H/V separate 3V TTL level / 1k Frequency Fh﹦31~80kHz Fv﹦56~76Hz...
Page 20
Signal Connector Pin Assignment HMDI connector is a type A receptacle for video/audio mode. 1.TMDS Data 2+ 9.TMDS Data 0- 17.CEC/GND 2.TMDS Data 2 shield 10.Clock + 18.+5V Power 3.TMDS Data 2- 11.Clock shield 19.Hot Plug Detect 4.TMDS Data 1+ 12.Clock - 5.TMDS Data 1 shield 13.CEC...
Page 21
2: Ground 3: Y 4: C SCART connector Pin No. Signal Inter Connection Pin No. 1 Audio right channel output (0.5 Vrms, < 1K ohms) 2 2 Audio right channel input (0.5 Vrms, > 10K ohms) 1 3 Audio left channel output (0.5 Vrms, < 1K ohms) 6 4 Audio ground 4 5 Blue signal ground 5 6 Audio left channel input (0.5 Vrms, >...
3. Function Control Description Operation, Adjust and Programming This picture only does for the reference. 2016/6/19 - 8 -...
Page 23
1.POWER Button Push this button to turn the unit on, and press it one more time to turn it off. 2.MENU Button Press this key to pop up the OSD menu under the current selected input mode. 3.TV/AV Button Press this key to select input sources. 4.CHANNEL (+, - ) Buttons Press CHANNEL - or + to browse through the TV channels which are not skipped.
4. Circuit Description (1) SMPS and Voltage Regulator circuit The LCD TV power board should be designed so that AC power supply AC 100V to 240V and the input frequency within 50/60Hz can be applied. (2) Video Circuit HDMI SCART TSUMV LVDS PANL...
5. Adjusting Procedure ITEM Program Equipments Requirement Procedure & SPEC Menu ‧ Connect Power to check if Power LED displays the 1. M/B Voltage Digital Connect with confirmation Multimeter AC Adapter RED light ‧ Use voltmeter to measure output position, and check voltage CON1/Pin1-2(12V);...
Page 34
Brightness Cable ESSENTIAL( mode. ‧ Sending the signal from DVD test disc (second adjustment Video Cable A-1) Play or TV Signal paragraph). ‧ DVD PLUGE w_Gray Scale Contrast Generator Set DVD to “FLUKE adjustment interlaced 54200” or the output Visual same rank examining...
Page 35
identical from up and down. Default value is 30 or 25. Select MENU to exit after finishing. ‧ Select source then choose VIDEO or S-VIDEO. Play DVD test ‧ Sending the signal from DVD test disc (twelfth PICTURE/VIDEO S-Video disc VIDEO 3D COMB FILTER Cable...
Page 36
‧ ‧ Switch DVD to output mode NTSC/PAL if there is the action of switch. ‧ Select source then choose VIDEO or S-VIDEO. 16. 480p/480i Play DVD test ‧ Sending the signal from DVD test disc (sixth switch Component disc VIDEO Cable ESSENTIALS...
Page 37
‧ Black pixels: 20. Defective Cell VG828 Full Red Full Green Section A≦2 Full Blue Section B≦8 ‧ RGB: Examination of all the dead pixels in pure Black Green and pure Red also pure Blue display. ‧ White pixels Section A≦1 Section B≦2 ‧...
Page 45
Layout placement Close to Tuner +12V VIF_12V +12V 7805 7805 150R 150R VIF_12V +5V_IN_TUNER LM340 LM340 C182 C182 VOUT TEST POINT TEST POINT 2.2u 2.2u 10nF 10nF layout placement 100uF/16V 100uF/16V 6.8K 6.8K 680R 680R Close to Mstar IC 0.82uH 0.82uH 100uF/16V 100uF/16V...
Need help?
Do you have a question about the LT2230HDL and is the answer not in the manual?
Questions and answers