液晶显示器维修手册
液晶显示器基本维修
3．不同灯数高压板的代换有的读者会问， 不是说几灯的液晶屏就要用几灯的高压板代换吗，怎么不同灯数的高压板也能代换? 在维修或者DIY时，经常需要进行不 同灯数的高压板之间的代换。代换的原则是，少灯的可以代换多灯的，如果用多灯的代换少灯的，则要修改电路，比较麻烦。
市售维修通用驱动板的高压接口多为+1 2V双针、GND双针、 BLON和ADJ。大多数ADJ功能是虚没的， 即此脚电压是固定的，不随亮度调节而变化，亮度控制完全是通过软件在AD芯片内部模拟的。实际上相当于3条线接往高压板。)
在接线简单的同时，也带来了有的高压板与之不兼容，而出现开机亮一下后熄灭， 或者亮度无论如何也调不上去的情况。前者的解决方法是，把原高压板亮度控制端直接接地，后者则需要通过一只适当的电阻连 通+5V和原高压板亮度调节端。所谓适当，是因为其阻值随高压板参数变化要灵活调节， 而不是一成不变，此电阻多为2．2kQ左右。
从驱动板到一体板的连线方法：找到ADJ和BLON(这两根线很多都可以并联使用)，接到高压板控制接口对应插针上，再在电源板上找到地和+12V， 接到高压板控制接H对应插针上，就大功告成了。
二是没有配件。液晶显示器是4灯的， 而手头没有4灯高压板，此时就可以建议客 户采用2灯高压板来点亮液晶屏。
4．非单体高压板的代换很多显示器采用的是电源高压一体板，如果只是高压部分损坏是否要换掉整个电路板呢?答案是否定的。换整板虽然方便但不经济，而且体积适合的一体板也不容易买到。正确的做法是： 先对电路进行分析，把高压部分的元件拆掉。然后在腾出的位置上固定好新的高压板，做好绝缘防护。
冠捷液晶显示器维修手册
三个电子枪，射出的电子流必须精确聚集，否则就得不到清晰的图像显示。但LCD不
存在聚焦问题，因为每个液晶单元都是单独开关的。这正是同样一幅图在LCD屏幕上
为什么如此清晰的原因。LCD也不必关心刷新频率和闪烁，液晶单元要么开，要么关，
所以在40-60Hz这样的低刷新频率下显示的图像不会比75Hz下显示的图像更闪烁。
什么是液晶？
液晶是介于固态和液态之间，不但具有固态晶体光学特性，又具有液态流动特性。 它的物理特性包括：黏性（visco-sity）、弹性（elasticity）和极化性（polarizalility）。 其黏性和弹性，使其对于方向不同的作用力具有不同的效果，可实现流动自由能最低 的物理模型及产生自然偏转现象。 极化性使液晶在受到外加电场作用时，很容易产生感应偶极性，形成光电效应。
R900
D904
240
1N4148
(1206)
(0603)
(NC)
R923
100
4
(1206)
C909 104 16V (0603)
R919 203 (0603)
IC903 IC902 56A
3 158-4
R922 R920
C912
913 623
913 (0805) (0805)
C910
392 16V (0603)
2、更换良品元件，焊接动作过程： ➢可适量加点助焊剂，以便于焊接。 b 把烙铁头清洁干净，在烙铁头的方位加点焊锡（注意量不要太多）。 ➢用镊子夹住良品元件贴上。 ➢把己沾过锡的烙铁去焊接其中一端，同时要调整另外一端，把元件贴对准。 ➢去掉镊子，焊接另外一端。 ➢在焊接多个脚元件时，应先在一端固定2个脚以上再焊接另外一端，重复上面动作。
液晶电视维修手册
*以LA40A750为例
8
I. LCD TV内部结构（IP电源）
T – CON 板
CN1
CNI803 CN103 CNI806 CN801
CN6105_FFC CN6001_LCD
背光驱动 (BL Driver)
IP电源板 (IP Board)
CNI801 CNI802
CN1001
主板 (Main Board)
2%
yes
⑤
FRCM测试故障?
no no
yes
⑥
T-Con板不 良
5% 更换LVDS线后 是否有故障?
FBE测试故障?
yes
no
no
更换T-Con板后 是否有故障?
LVDS线不良 yes
77%
yes
液晶屏不良
16
III-3. 间歇性无图像
非故障检查项目： 检查是否电源线接触不良？ 故障检查项目：
故障发生时待机 灯是否点亮?
24
注意：具体型号接口定义以维修手册为准
附. 排线接口检测方法
接口④------屏幕亮度(Dimming)控制（部分型号Dimming控制端在主板电源接口中）
PIN NAME 1 SW_inverter 2 Ana_dimming 3 PWM_dimming 4 GND 5 GND
功能定义:
-- SW_inverter -- Ana_dimming -- PWM_dimming 控制屏幕逆变器 约5V 屏幕明暗控制 屏幕明暗控制PWM方式, 占空比 40%~90%
no no
3%
yes
⑥
FBE测试故障?
18% 更换LVDS线后 是否有故障?
yes
L32V6-A8_网通工程)维修手册
1uF
1
1uF
2
1uF
3
1uF
4
4.7uF
5
4.7uF
6
8200pF
7
0.018uF
8
2.7KЊ
LOUT
0.018uF
9
0.015uF
10
4.7uF
11
47KЊ
12
Input selector
REF
-2dB
Input selector
-2dB
Lch Volume 0~-84dB,-∞
Rch Volume 0~-84dB,-∞
Surround
Mode selector
Mode selector
Output Gain Control
I2C-BUSɹI/F
21 BASSR1 20 BASSR2 19 ROUT 18 SCL 17 SDA
De-pop
16 NC 15 NC
0DU 7FS
( 2 /10 )
部分电路规格书后附：
A Z
PRELIMINARY soNmoetipcaer;aTmheitsriicslnimotitasfairnealsuspbejecciftitcoatciohnan. ge.
R2S15900SP
AUDIO SIGNAL PROCESSOR
SOUND CONTROLLER WITH SURROUND
布进行擦拭。 请不要使用任何汽油、酒精、苯类有机液体或气雾状清洁剂。
注意事项： 1、 液晶显示屏属于精密显示器件，屏幕上有个别的亮点、暗点，或 红、绿、蓝色之类的少许死像素，这是正常现象，不属于不良品。 2、 液晶屏工作温度为0~40 度，过高或过低的温度都会影响液晶屏 的工作。当环境温度过低时，可能需要一点时间图象才能达到正常的 亮度，这并非故障。过片刻后，图象就会达到正常的亮度。 3、 液晶屏长时间显示同一个静止画面时，会在电视上留下一个残影， 这种损坏属于使用不当造成的。 4、 电视在连接各种系统时，可能会出现系统不匹配的现象，特别是 连接电脑时，有些显卡可能不匹配。 5、 液晶电视由于使用嵌入式的操作系统，软件比较复杂，可能在工 作中或待机中出现软件问题，如果重新启动能恢复正常，就不属于故 障。
液晶显示器故障维修大全
液晶显⽰器故障维修⼤全液晶显⽰器故障维修⼤全⼀、液晶显⽰器的概念：液晶是⼀种介于固态和液态之间的具有规则性分⼦排列及晶体的光学各向异性的有机化合物。
液晶在受热到⼀定温度的时候会呈现透明状的液体状态，⽽冷却则会出现结晶颗粒的混浊固体状态，因为其物理上具有液体与晶体的特性，故称之为“液晶”。
液晶显⽰器实际上就是以液晶为显⽰模块制作的显⽰器。
液晶显⽰器中的液晶体在⼯作时并不发光，⽽是控制外部光的通过量。
当外部光线通过液晶分⼦时，液晶分⼦的排列扭曲状态不同，光线的通过量就不同，从⽽实现了亮暗变化，利⽤这种原理可重现图像。
液晶分⼦扭曲的⼤⼩由加在液晶分⼦两边的电压差决定，因⽽可以实现电到光的转换。
即⽤电压的⾼低控制光的通⼆、液晶显⽰器的结构：1. 从外观看，过量，从⽽把电信号转换成光信号，将图像显⽰出来。
⼆、液晶显⽰器的结构：液晶显⽰器主要包括显⽰器外壳、显⽰器电源开关、功能按钮、⽀架及液晶显⽰屏（PANEL）等。
2. 从内部结构看，液晶显⽰器主要由驱动板（主控板）、电源板、⾼压板（有的和电源板设计在⼀起）、功能⾯板、VGA接⼝、DVI接⼝、液晶⾯板（包括液晶分⼦、液晶驱动芯⽚、彩⾊滤光⽚、偏光板、导光板等）、背光灯管组成。
液晶显⽰器内部结构实物图三、液晶显⽰器内部1. 驱动板：驱动板也叫主控板，主要⽤以接收、处理从外部送进来的模拟（VGA）或者数字（DVI）图像信号，并通过屏线送出驱动信号，控制液晶⾯板⼯作。
驱动板上主要包括微处理器、图像处理器、时序控制线⽚、晶振、各种接⼝及直流电压转换电路等，它是液晶显⽰器的检测控制中⼼和⼤脑。
2. 电源板：电源板的作⽤是将90~240V的交流电压转变为12V、5V、（⼜称升压板、⾼压⾼压板（⼜称升压板、⾼压3.3V等直流电压，供给驱动板、液晶⾯板等⼯作。
3. ⾼压板条、INVERTER）：⾼压板主要是将主板或电源板输出的12V的直流电压转变为背光灯管启动和⼯作需要的1500-1800V的⾼频⾼压交流电。
冠捷I2369V液晶显示器维修手册
维修手册客户/品牌机种名AOC I2369V变更说明版本发布日期变更说明对外机种名对内机种名A00 JAN,28,2013Initial Release I2369V TDCJN27YFVA2HNF.LF A01 FEB,06,201,2 Add new model I2369V/WW TDCJN27YFVA3HNF.LF目录1. 技术规格 -------------------------------------------------------------------------------------------------------------- 4 1.1 一般规格 --------------------------------------------------------------------------------------------------------- 4 1.2 工厂预设模式 --------------------------------------------------------------------------------------------------- 52. 操作说明 -------------------------------------------------------------------------------------------------------------- 62.1控制面板--------------------------------------------------------------------------------------------------------- 62.2接口说明--------------------------------------------------------------------------------------------------------- 7 2.3 OSD菜单调整 ------------------------------------------------------------------------------------------------- 83. 工厂模式调整 -------------------------------------------------------------------------------------------------------- 234. 电气方框图 ----------------------------------------------------------------------------------------------------------- 245. 线路图 ----------------------------------------------------------------------------------------------------------------- 255.1主板--------------------------------------------------------------------------------------------------------------- 255.2按键板------------------------------------------------------------------------------------------------------------ 305.3电源板------------------------------------------------------------------------------------------------------------ 316. ISP和DDC烧录SOP --------------------------------------------------------------------------------------------- 347. 故障处理流程 -------------------------------------------------------------------------------------------------------- 477.1主板--------------------------------------------------------------------------------------------------------------- 477.2按键板------------------------------------------------------------------------------------------------------------ 518.主要IC管脚及内部框图 -------------------------------------------------------------------------------------- 529. 附带软件使用SOP--------------------------------------------------------------------------------------------- 569.1分屏软件SOP -------------------------------------------------------------------------------------------------- 56 9.2 e-Saver SOP --------------------------------------------------------------------------------------------------- 57 9.3 i-Menu SOP ---------------------------------------------------------------------------------------------------- 5810. 料件清单 ------------------------------------------------------------------------------------------------------------ 591、技术规格1.1 一般规格1.2 工厂预设模式2. 操作说明2.1控制面板2.2接头引脚分配管脚号信号电缆的 15 针一端管脚号信号电缆的 15 针一端1 视频 - 红色9 +5V2 视频 - 绿色10 接地3 视频 - 蓝色11 N.C.4 N.C. 12 DDC- 串行数据5 检测电缆13 H- 同步6 GND-R 14 V- 同步7 GND-G 15 DDC- 串行时钟8 GND-B管脚号信号名称管脚号信号名称管脚号信号名称1 TMDS 数据 2- 9 TMDS 数据 1- 17 TMDS 数据 0-2 TMDS 数据 2+ 10 TMDS 数据 1+ 18 TMDS 数据 0+3 TMDS 数据 2/4 屏蔽11 TMDS 数据 1/3 屏蔽19 TMDS 数据 0/5 屏蔽4 TMDS 数据 4- 12 TMDS 数据 3- 20 TMDS 数据 5-5 TMDS 数据 4+ 13 TMDS 数据 3+ 21 TMDS 数据 5+6 DDC 时钟14 +5V 电源22 TMDS 时钟屏蔽7 DDC 数据15 接地（对于 +5V ）23 TMDS 时钟 +8 N.C. 16 热插拔检测24 TMDS 时钟 -2.3 OSD 调节明亮度图象设置色温窗口增亮OSD 设置其它退出3 工厂模式调整进入工厂模式方法：关机状态下，长按左右两个方向键后做开机动作，待按键指示灯亮后松手，从OSD菜单后左上角“F”进入工厂。
三星 液晶显示器-电视LA22B450C4HXXZ LA22B450C4HXZK 维修手册
维 修薄膜液晶显示器电视目录LA22B450C4H1． 注意事项 2． 产品规格 3． 拆卸和重新组装 4． 故障排除5． 分解图和零件清单 6． 接线图参阅GSPN 维修手册（翻阅封底）获取更多信息。
液晶显示器-电视底板：N66C型号: LA22B450C4HXXZLA22B450C4HXZK手 册目录表1．注意事项........................................................................................................................................1-1 1-1安全注意事项...........................................................................................................................1-1 1-2维修注意事项...........................................................................................................................1-2 1-3静电敏感器件（ESD）注意事项..............................................................................................1-2 1-4安装注意事项...........................................................................................................................1-3 2．产品规格........................................................................................................................................2-1 2-1特点与规格..............................................................................................................................2-1 2-2与老型号的规格比较................................................................................................................2-4 2-3附件.........................................................................................................................................2-5 3．拆卸和重新组装..............................................................................................................................3-1 3-1拆卸和重新组装.....................................................................................................................3-1 4．故障排除........................................................................................................................................4-1 4-1故障排除 .............................................................................................................................4-1 4-2调整和调节............................................................................................................................4-13 4-3工厂模式调节.........................................................................................................................4-14 4-4设置旅馆选项数据 ............................................................................................................4-24 4-5白平衡-校准...........................................................................................................................4-28 4-6维修信息................................................................................................................................4-30 5．分解图和零件清单..........................................................................................................................5-1 5-1 LA22B450C4H分解图.............................................................................................................5-1 5-2 LA22B450C4H零件清单.........................................................................................................5-3 6．接线图............................................................................................................................................6-1 6-1接线图形..................................................................................................................................6-1 6-2接线图片..................................................................................................................................6-4 6-2连接器功能..............................................................................................................................6-4 6-3接线.........................................................................................................................................6-5GSPN (全球维修合作网络)国家网站北美拉丁美洲CIS 欧洲中国亚洲中东&非洲本维修手册归三星电子有限公司所有。
AOC R2226W液晶显示器维修手册
维修手册客户/品牌机种名AOC R2226W变更说明版本发布日期变更说明对外机种名对内机种名TI9CA8NDTXNTHNE A00 Mar.-17-2010首次发布R2226WTI9AA8NDTXNTHNE目录1. 技术规格--------------------------------------------------------------------------------------------------------------4 1.1 一般规格---------------------------------------------------------------------------------------------------------41.2 工厂预设模式---------------------------------------------------------------------------------------------------52. 操作说明--------------------------------------------------------------------------------------------------------------62.1控制面板---------------------------------------------------------------------------------------------------------62.2接口说明---------------------------------------------------------------------------------------------------------72.3 OSD菜单调整-------------------------------------------------------------------------------------------------73. 工厂模式调整--------------------------------------------------------------------------------------------------------104. 故障处理流程--------------------------------------------------------------------------------------------------------114.1主板---------------------------------------------------------------------------------------------------------------114.2电源板------------------------------------------------------------------------------------------------------------144.3按键板------------------------------------------------------------------------------------------------------------165. 电气方框图-----------------------------------------------------------------------------------------------------------175.1主板---------------------------------------------------------------------------------------------------------------175.2电源板------------------------------------------------------------------------------------------------------------186. 线路图-----------------------------------------------------------------------------------------------------------------196.1主板---------------------------------------------------------------------------------------------------------------196.2电源板------------------------------------------------------------------------------------------------------------237. 料件清单--------------------------------------------------------------------------------------------------------------251.技术规格1.1一般规格1.2工厂预设模式2.操作说明2.1控制面板外部控制按电源开关即可开关显示器。
索尼KLV-32V200A、40V200A、46V200A液晶显示器维修手册（英文版）（可编辑）
索尼KLV-32V200A、40V200A、46V200A液晶显示器维修手册（英文版）MODIFICATION HISTORYMODEL NAME : KLV-32/40/46V200ASERVICE MANUALPARTS No. : 9-834-116-02* Blue characters are linking Ver. DATA CONTENTS1.0 2006.07 Issued1.1 2007.03 Correction SEC.4 EXPLODED P. 4-8, 4-9, 4-10, 4-12, 4-13, 4-14, 4-15AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DKLV-32V200A/40V200A/46V200AChina ModelSERVICE MANUALWAX2 CHASSISSPECIFICATIONSDisplay UnitPanel SystemPower Requirements: LCD Liquid Crystal Display Panel 220 V AC, 50 HzTV SystemScreen Size: I, D/K, B/G, M KLV-46V200A: 46 inchesColor System KLV-40V200A: 40 inches PAL, PAL60, SECAM, NTSC 4.43, NTSC 3.58 KLV-32V200A: 32 inchesAntennaDisplay Resolution: 75 ohm external terminal 1,366 pixels horizontal × 768 lines verticalPower Consumption: Channel Coverage Indicated on the rear of the TV.B/GDimensions w × h × d: VHF: E2 to E12 / UHF: E21 to E69 / KLV-46V200A:CATV: S01 to S03, S1 to S41 Approx. 1120 × 805 ×334 mm with stand I Approx. 1120 × 755 × 116 mm without standUHF: B21 to B68 / CATV: S01 to S03, S1 to S41 KLV-40V200A:D/K Approx. 988 × 716 × 334 mm with stand VHF: C1 to C12, R1 to R12 / UHF: C13 to C57, R21 to Approx. 988 × 664 × 103 mm without standR60 / KLV-32V200A:CATV: S01 to S03, S1 to S41, Z1 to Z39 Approx. 792 × 593 × 219 mm with stand M Approx. 792 × 546 × 99 mm without standVHF: A2 to A13/ UHF: A14 to A79 /Weight: CATV: A-8 to A-2, A to W+4, W+6 to W+84 KLV-46V200A: Approx.34 kg with stand Approx. 29 kg without stand KLV-40V200A:Approx. 27 kg with stand Approx. 22 kg without stand KLV-32V200A: Approx. 17 kg with stand Approx. 15 kg without standLCD Color TVAD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB7F5000B75EA3B9DTerminalsS VIDEO 1/2: S S VIDEO 4-pin mini DIN: S Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative C: 0.286 Vp-p Burst signal, 75ohms VIDEO IN 1/2/3:VIDEO: 1 Vp-p, 75 ohms unbalanced, sync negative AUDIO: 500 mV rms Impedance: 47 kilohms.HD/DVD IN 1/2:Y, PB/CB, PR/CR Component Video: Y:1.0 Vp-p, 75 ohms unbalanced, sync negative PB/CB:0.7 Vp-p, 75 ohms PR/CR:0.7 Vp-p, 75 ohms Signal format: 480i, 576i, 480p, 576p, 720p, 1080iAUDIO: 500 mV rms Impedance: 47 kilohmsVIDEO OUT: VIDEO : 1 Vp-p, 75 ohms unbalanced, sync negative AUDIO: More than 1 Vrms at the imum volume setting Variable More than 500 mV rms FixedHDMI IN Video:1080i, 720p, 576p, 576i, 480p, 480i Audio:Two channel Linear PCM32, 44.1 and 48kHz, 16, 20 and 24bits,PC: D-sub 15-pin, analogue RGB, 0.7 Vp-p, 75 ohms, positive See the PC input signal Reference chart on page 32 Audio: Stereo minijack, 0.5 Vrms, 1 kilohmHeadphones i Stereo minijackKLV-32/40/46V200A CH 2AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB7F5000B75EA3B9DTABLE OF CONTENTSSefety Check Out/Leakage Test4 3-4-15. G1 Board Schematic Diagram Caution Handling5 KLV-32V200A 3-22Lead free information. 5 3-4-16. G2 Board Schematic DiagramSELF DIAGNOSTIC6 KLV-40/46V200A 3-233-4-17. H1 Board Schematic Diagram 3-241. DISASSEMBLY1-1 3-4-18. H2 Board Schematic Diagram1-1. REAR COVER REMOVAL1-1 EXCEPT-KLV-46V200A. 3-251 KLV-32V2OOA 1-1 3-4-19. H4 Board Schematic Diagram 3-262 KLV-40/46V2OOA. 1-1 3-4-20. H46 Board Schematic Diagram1-2. VESA BRACKET ASSEMBLY REMOVAL. 1-2 KLV-46V200A 3-271-3. H1 BOARD REMOVAL. 1-3 3-4-21. TUG Board Schematic Diagram 3-28 1-4. H2 BOARD EXCEPT KLV-46V200A / 3-5. VOLTAGE MEASUREMENTH46 BOARD KLV-46V200A REMOVAL 1-3 AND WAVEFORMS3-291-5. G1 AND G2 BOARDS REMOVAL. 1-4 3-6. PRINTED WIRING BOARDS3-30 1-6. AG BOARD REMOVAL 1-4 3-7. SEMICONDUCTORS 3-371-7. TUG BOARD REMOVAL. 1-51-8. DTT SHIELD REMOVAL. 1-5 4. EXPLODED VIEWS..4-11-9. B BOARD REMOVAL 1-6 4-1. KLV-32V200A4-21-10. AC INLET REMOVAL 1-7 4-1-1. REAR COVER ASSY AND STAND ASSY4-2 1-11. SPEAKER AND H4 BOARD REMOVAL1-7 4-1-2. H1 AND H2 BOARD 4-3 1-12-1.LCD PANEL REMOVAL KLV-32V200A. 1-8 4-1-3. AG, B AND TUG BOARDS. 4-41-12-2. TOP FRAME REMOVAL KLV-40/46V200A 1-9 4-1-4. G1 BOARD AND AC INLET4-54-1-5. H4 BOARD AND SPEAKER4-62. SERVICE ADJUSTMENTS2-1 4-1-6. BEZEL ASSY AND LCD PANEL 4-72-1. How to enter Service Mode 2-1 4-2. KLV-40/46V200A 4-82-2. Signal Level Adjustment2-1 4-2-1. REAR COVER ASSY AND STAND ASSY4-82-3. Gamma Adjustment. 2-3 4-2-2. H1 BOARD AND H2 H46 BOARDS4-9 2-4. White Balance Adjustment. 2-3 4-2-3. AG, B AND TUG BOARDS4-10 2-5. Panel Replacement2-5 4-2-4. G2 BOARD AND AC INLET 4-112-6. Board Replacement. 2-5 4-2-5. H4 BOARD AND SPEAKER 4-124-2-6. BEZEL ASSY AND LCD PANEL. 4-133. BLOCK DIAGRAMS.3-1 4-3. PACKING MATERIALS KLV-32V200A4-143-1. BLOCK DIAGRAMS 3-1 4-4. PACKING MATERIALS KLV-40/46V200A4-15 3-1-1. TUG BLOCK DIAGRAM3-13-1-2. G1 BLOCK DIAGRAM KLV-32V200A 3-2 5. ELECTRICAL PARTS LIST..5-1 3-1-3. G2 BLOCK DIAGRAM KLV-40/46V200A 3-33-1-4. B, H1 AND H4 BLOCK DIAGRAMS 3-43-1-5. AG AND H2/H46 BLOCK DIAGRAMS3-53-2. FRAME DIAGRAM3-63-3. CIRCUIT BOARDS LOCATION3-73-4. SCHEMATIC DIAGRAMS INFORMATION. 3-73-4-1. AG Board-0013-83-4-2. AG Board-002. 3-93-4-3. B Board-001. 3-103-4-4. B Board-002. 3-113-4-5. B Board-003 3-123-4-6. B Board-004 3-133-4-7. B Board-005. 3-143-4-8. B Board-006. 3-153-4-9. B Board-007. 3-163-4-10. B Board-008. 3-173-4-11. B Board-009 3-183-4-12. B Board-010 3-193-4-13. B Board-011. 3-203-4-14. B Board-012. 3-21KLV-32/40/46V200A CH 3AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DUSE CAUTION WHEN HANDLING THE LCD PANEL LEAKAGE TEST The AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having a When installing the LCD panel, be sure you are grounded by usinga wrist band. return to chassis, must not exceed 0.5 mA 500 microamperes.When istalling the LCD panel on the wall, the LCD panel must be Leakage current can be measured by any one of three methods. secured using the 4 mounting holes on the rear cover.1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these1. do not press on the panel or frame edge to avoid the risk of instructions.electric shock.2. A battery-operated AC milliampmeter. The Data Precision 245 2. do not scratch or press on the panel with any sharp objects. digital multimeter is suitable for this job.3. do not leave the module in high temperatures or in areas of high 3. Measuring the voltage drop across a resistor by means of a humidity for an extended period of time.VOM or battery-operated AC voltmeter. The “limit” indica-4. do not expose the LCD panel to direct sunlight.tion is 0.75 V, so analog meters must have an accurate low5. avoid contact with water. It may cause a short circuit within the voltage scale. The Simpson’s 250 and Sanwa SH-63TRD are module.examples of passive VOMs that are suitable. Nearly all bat-6. disconnect the AC adapter when replacing the backlight CCFLtery-operated digital multimeters that have a 2 VAC range areor inverter circuit.suitable see Figure A.High voltage occurs at the inverter circuit at 650Vrms7. always clean the LCD panel with a soft cloth material.8. use cere when handling the wires or connectors of the inverter To Exposed Metalcircuit. Damaging the wires may cause a short. Parts on Set9. protect the panel from ESD to avoid damaging the electronic circuit C-MOS.ACSAFETY CHECK-OUT0.15 ?F 1.5 kVoltmeter0.75 VAfter correcting the original service problem, perform the following safety checks before releasing the set to the customer:1. Check the area of your repair for unsoldered or poorly soldered Earth Groundconnections. Check the entire board surface for solder splashes and bridges.Fig. A. Using an AC voltmeter to check AC leakage.2. Check the interboard wiring to ensure that no wires are“pinched” or contact high-wattage resistors.3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain WARNING!!that you have replaced all the insulators.4. Look for unauthorized replacement parts, particularlySAFETY-RELATED COMPONENT WARNING!!transistors, that were installed during a previous repair. Point COMPONENTS IDENTIFIED BY SHADING AND MARK !them out to the customer and recommend their replacement.ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS5. Look for parts which, though functioning, show obvious signs of AND IN THE PARTS LIST ARE CRITICAL FOR SAFEdeterioration. Point them out to the customer and recommend OPERATION. REPLACE THESE COMPONENTS WITHtheir replacement.SONY PARTS WHOSE PART NUMBERS APPEAR AS6Check the line cords for cracks and abrasion. Recommend the SHOWN IN THIS MANUAL OR IN SUPPLEMENTSreplacement of any such line cord to the customer.PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT7. Check the antenna terminals, metal trim, “metallized” knobs,ARE CRITICAL FOR SAFE OPERATION AREscrews, and all other exposed metal parts for AC leakage. Check IDENTIFIED IN THIS MANUAL. FOLLOW THESEleakage as described below.PROCEDURES WHENEVER CRITICAL COMPONENTSARE REPLACED OR IMPROPER OPERATION ISSUSPECTED.KLV-32/40/46V200A CH 4 44AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DCAUTIONexample 1The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation e.g. H1 etc [ see example ]. The servicing of these boards requires special precautions to be taken asoutlined below.It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.Lead Free Solder is available under the following part numbers : Part number Diameter Remarks7-m 640-005-19 0K .3m 0.25g7m -640-005-20 0K .4 m 0.50gm7m -640-005-21 0K .5 0.50g7m -640-005-22 0K .6 m 0.25g7m -640-005-23 0K .8 m 1.00g7m -640-005-24 1K .0 m 1.00g7m -640-005-25 1K .2 m 1.00g7m -640-005-26 1K .6 m 1.00gDue to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degreescentigrade. This requires soldering equipment capable of accurate temperature control coupled with a good heat recoverycharacteristics.For more information on the use of Lead Free Solder, please refer to ////0>.KLV-32/40/46V200A CH 5AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DSELF DIAGNOSTIC FUNCTIONControl ButtonsMENUTV/VIDEO VOLUME CHANNEL POWERPIC OFF/TIMER STANDBY POWERDescription of LED IndictorsLED LED Type Description* Light is green when the TV set is onPOWER LED Red/Green LED * Functions as failure indicator* Blinks green in aging modeTIMER LED Red LED Lights when timer is setLights when power saving setting is set toPIC OFF LED Green LEDpicture off See Instruction ManualKLV-32/40/46V200A CH6AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DLED ControlTIMER LED/ STANDBYSTATUS POWER LED REMARKSPICTURE OFF LED LEDPower off using the power switch orremote controlNOTE: Standbystate does not exist in this model;Power Off Off Off Offhowever, the microcomputer doesenter into sleep mode.Power On Lights Green Off Off Microcomputer working normally.Failure causes are classified by theFailure Blinks Red Off Offnumber of time the red light blinks.Aging mode is classified by a blinkingAging Blinks Green Off Offgreen light.Picture Off Lights Green Lights Green No display black screen. OffWhen SLEEP TIMER is set duringLights OrangeOffLights Green power on.SLEEP TIMERWhen SLEEP TIMER is set inLights Green OffLights Green Picture Off mode.When ON TIMER is set and power isOffLights Orangeoff.OffWhen ON TIMER is set and power isON TIMERLights Orange OffLights Green on.When ON TIMER is set in Picture OffOffLights GreenLights Green mode.Off Off Lights RedPC STANDBYPC STANDBY/Lights OrangeOff Lights RedTIMER ONThe units in this manual contain a self-diagnostic function. If an error occurs, the POWER LED will automatically begin to flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the POWER LED flash indicators is listed in t he instruction manual for the user’s knowledge and reference. If an error symptom is difficult to reproduced use the Remote Commander to display the record that is stored at the internal NVM to specify the cause of the failure.Diagnostic Test IndicatorsWhen an error occurs, the POWER LED will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest flashes is identified first. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.LEDERROR ERROR DESCRIPTIONCODE1 Supply Voltage Trouble Panel 5V UNReg 10.5V2 DE5V Voltage Trouble FE5V DCALERT23Voltage Trouble D3.3V/D2.5V/D1.8V. DCALERT14 Backlight Trouble5 Main Supply Voltage Trouble 17.5V.DET6 Speaker Applied Voltage Trouble7 Monitor an Increase in Inside-Temperature esp. on the panel side8Trident IC TroubleKLV-32/40/46V200A CH 7AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DSECTION 1DISASSEMBLY1-1. REAR COVER REMOVAL1 KLV-32V200A3Two Screws +BVTP 3 X 12Two Screws2+PSW M6 X 161Twelve Screws4 Lift to remove Rear Cover+BVTP2 4 X 162 KLV-40/46V200AKLV-46V200A2 Two screwsKLV-40V200A +BVTP2 4X163 One screw3 One screw +BVTP2 4X166 Five screws +BVTP2 4X16 +PSW M3X5 1 Four screws7 Five screws +PSW M6X162 Two screws +BVTP 3X123 Two screws+BVTP2 4X16 +BVTP2 4X16KLV-46V200A5 Three screws +BVTP2 4X168 Lift to remove Rear Cover Assy5 One screw +BVTP2 4X16Two screws4 +BVTP2 4X16KLV-46V200AKLV-40V200A4 Two screws +BVTP2 4X165 Two screws +BVTP2 4X16KLV-46V200AKLV-32/40/46V200A CH 1-1AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-2. VESA BRACKET ASSEMBLY REMOVAL1 Three screws4 Vesa assy bracket L3 Two screws +PSW M5X16 +BVTP M4X165 Two screws +BVTP2 M4X162 Stand assy6 Vesa assy bracket RKLV-40V200A/46V200A1 Three screws3 One screw +PSW M5X16 +PSW M4X166 Vesa assy bracket R4 Vesa assy bracket L5 One screw2 Stand assy +PSW M4X16KLV-32V200AKLV-32/40/46V200A CH 1-2AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-3. H1 BOARD REMOVAL1Disconnect CN101Lift tabs to remove board43 3 Two Screws +BVTP24 X 12KLV-32V200A/40V200ATwo Screws +BVTP2 4 X 16H1 boardKLV-46V200AMulti Button Assy21-4. H2 BOARD Except KLV-46V200A/H46 BOARD KLV-46V200A REMOVAL Two screws3 +BVTP 3 X 12 TYPE2 IT-3 Except KLV-40V200A2 H2 board Except KLV-46V200AH46 board KLV-46V200A4 Side jack holder L KLV-40V200A/46V200AOne Connector CN201 KLV-46V200A1Side jack holder M KLV-32V200ASide terminal assy5KLV-32/40/46V200A CH 1-3AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-5. G1 AND G2 BOARDS REMOVAL2 Two screwsKLV-32V200A +BVTP 3X121 Four screws +PSW 3SG1 Two screws +PSW M3X55 G1 assy bracket3 G1 board2 G2 board4 Two screws +PSW M3X53 Bracket, G2KLV-40V200A/46V200A1-6. AG BOARD REMOVAL2 Two screws +BVTP3 X 12 Type2 IT-31 6 Connectors CN9502, CN9501, CN7503, CN9001, CN7000, CN97023 Four screws +PSW 3SG4 AG boardKLV-32/40/46V200A CH 1-4AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-7. TUG BOARD REMOVAL3 One screw + PSW 3SG2 Three screws + BVTP3 X 12 TYPE2 IT-24 TUG board1 3 Connectors CN3802, CN3903, CN39041-8. DTT SHIELD REMOVAL1 Two screws2 One screw +PSW M3X5 +PSW M3X53 Two screws HEX4 Top DTT ShieldKLV-32/40/46V200A CH 1-5AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-9. B BOARD REMOVAL2 One screw +PSW M3X53 Lead wire with connector LVDS5 Two screws +PSW 3SG4 Two screws 1 Connectors +BVST 3 X 8 CN1004, CN1003, CN1007,CN7009, CN1002, CN1700,CN5000, CN1001, CN7008,CN10086 B board9 Bracket assy A,TU7 Two screws +PSW M3X58 DTT shield assy LOWERKLV-32/40/46V200A CH 1-6AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-10. AC INLET REMOVAL5 Cover under4 Two screws1 One screw +BVTP2 4 X 16 +PSW M4X86 Two screws +BVTP2 4 X 162 Two screws +KTT 3X107 Four screws +PSW M5X83 AC Inlet4 Two screws +BVTP2 4 X 165 Under cover2 Two screws +KTT3 X 108 Bottombracket assy6 Two screws +PSW 4 X 8 3 AC inlet1 One screw7 Bottom bracket +PSW M4X8KLV-40V200A/46V200AKLV-32V200A1-11. SPEAKER AND H4 BOARD REMOVAL2 Loudspeaker2 Loudspeaker3 Loudspeaker1 H4 boardKLV-46V200A3 LoudspeakerKLV-32V200A/40V200AKLV-32/40/46V200A CH 1-7AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-12-1. LCD PANEL REMOVAL KLV-32V200A1 Two screws +PSW M4X82 Frame top assy5 One screw +BVTP2 4X166 One screw +PSW M3X53 One screw +PSW M3X54 G support7 Harnesswith connector LVDS8 LCD panelBezel assyKLV-32/40/46V200A CH 1-8AD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9D1-12-2. TOP FRAME REMOVAL KLV-40/46V200A4 One screw +PSW 5X85 Two screws +BVTP2 4X121 One screw2 Two screws +BVTP2 4X12+PSW 5X86 Top frame 403 Top frame 40KLV-40V200A4 One screw +PSW 5X85 One screw +BVTP2 4X121 One screw +PSW 5X82 One screw +BVTP2 4X126 Top frame 403 Top frame 40KLV-32/40/46V200A CH 1-9EAD6570234986BC6048C237EAB20B143372A38C3C2892F4CFD0B74BA760A75EAEB 7F5000B75EA3B9DSECTION 2 SERVICE ADJUSTMENTS2-1. How to enter Service Mode 2-2. Signal Level AdjustmentService adjustments to this model can be performed using the supplied 2-2-1. Set up of AD calibration 1 adjustment forremote Commander RM-GA005. terrestrial analog.The following adjustments are done via ECS.1. Turn on the power to the TV set and en。
液晶电视维修手册(pdf 84页)
主板 （小信号处理+逻辑驱动）
第二节 主板组件速判速修
1、LS08机芯（TDA15063 ＋ GM1501方案）
派生系列 W***F8系列 W***F8P系列 TD***F8系列 18系列 18P系列 20系列
代表机型 CHD-W260F8、CHD-W270F8、CHD-W320F8、CHD-W370F8 CHD-W270F8P、CHD-W320F8P、CHD-W370F8P CHD-TD270F8、CHD-TD320F8、CHD-TD370F8 LT2618、LT3218、LT3718、LT4018、LT4219B LT3718P、LT4018P LT5520
2、LP09机芯（PW328 ＋ PW2300方案）
派生系列 19/20系列 19P/19H/66系列 99系列 33系列
代表机型 LT4219、LT4619、LT3718H、LT4720H LT4719H、LT4219P、LT4619P、LT4266、 LT4219H LT4099、LT4299、LT4699 LT4233
LS08机芯技改方案
1. F8/18系列音量关小，有交流噪音。 解决方案：将主板功放电路位号为RA8在主板背面（15K）的电阻改为 10K或8.2K。改后若整体音量变小，请对TDA15063进行升级，以提高 TDA15063输出的伴音信号的幅度。
2. 37〞～42〞F8/18 系列电源板出现噪音 解决方案：取消自制GP03开关电源中U810、L810、D818。
目录
一、液晶电视的结构及各组件控制关系： 二、长虹液晶电视主板组件的快速识别： 三、OEM产品的快速识别和判定： 四、屏上组件的识别和判定： 五、二合一电源组件组件的识别和判定： 六、技术资料的查询和替换：
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North/Latin America Europe/Africa Asia/Oceania COLOR MONITOR SERVICE MANUAL MODEL: E2360S (E2360S-PN W.A**NAP for LGD LM230WF5-TRA1)/E2360T (E2360T-PN W.A**NAP forLGD LM230WF5-TRA1) **Sales MarketCAUTIONBEFORE SERVICING THE UNIT,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.*To apply the M-STAR Chip.Copyright © 2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only CONTENTSSPECIFICATIONS ..........................................................2 PRECAUTIONS ..............................................................3 TIMING CHART ..............................................................7 DISASSEMBLY .............................................................8 BLOCK DIAGRAM.........................................................10 DISCRIPTION OF BLOCK DIAGRAM . (12)ADJUSTMENT ............................................................. 13 SERVICE MODE ......................................................... 16 TROUBLESHOOTING GUIDE .................................... 17 WIRING DIAGRAM ...................................................... 23 EXPLODED VIEW........................................................ 24 SCHEMATIC DIAGRAM.. (26)SPECIFICATIONSE2360S&T1. LCD CHARACTERISTICS Type: Flat Panel Active matrix-TFT LCD Active Display Area: 23.0 inches/58.4 cmPixel Pitch: 0.265 mm x 0.265 mmSurface Treatment: Anti-Glare coating Resolution: Max: VESA 1920x1080@60Hz.Recommend: VESA 1920x1080@60Hz.Video Input:Signal Input: 15 pin D-Sub Connector; DVI-D Connector (Only for E2360T)Input Form: RGB Analog (0.7 Vp-p/75 ohm)Digital (Only for E2360T) Plug&Play: DDC2AB (Analog)DDC2B (Digital) (Only for E2360T)2. POWER SUPPLY 2-1. Power: 12V==3.0A2-2. Power Consumption On Mode: 30W (Typ.) Sleep Mode: ≤ 1 W Off Mode: ≤ 0.5 W3. Sync Input Horizontal Freq. 30 kHz to 83 kHz (Automatic)Vertical Freq. 56 Hz to 75 Hz (Automatic) Input Form Separate Sync.Digital (Only for E2360T)4. ENVIRONMENT4-1. OperatingTemperature: 10°C to 35°CHumidity: 10 % to 80% non-Condensing 4-2. StorageTemperature: -20°C to 60 °CHumidity: 5 % to 90 % non-Condensing5. DIMENSIONS (with Stand) Width 54.23 cm (21.35 inch) Height 41.20 cm (16.22 inch) Depth 17.20 cm (6.77 inch) DIMENSIONS (without Stand) Width 54.23 cm (21.35 inch) Height 40.83 cm (16.07 inch) Depth 3.10 cm (1.22 inch)6. WEIGHT (excl. packing) Weight: 2.6 kg (5.73 lb)Copyright © 2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use OnlyTIMING CHARTE2360S&TDisplay Modes (Resolution)Horizontal Freq. (kHz) Vertical Freq. (Hz)1 720 x 400 31.468 702 640 x 480 31.469 603 640 x 480 37.500 754 800 x 600 37.879 605 800 x 600 46.875 756 1024 x 76848.363 607 1024 x 76860.123 758 1152 x 86467.500 759 1280 x 102463.981 6010 1280 x 1024 79.976 7511 1680 x 1050 65.290 60*12 1920 x 1080 67.500 60*Recommend ModeDISASSEMBLY-Set#1Put the monitor on a soft flat. #2Remove the base ass’y.Turn the screw by using the screw handle. #3Remove the Rear Cover ass’y. #4The Rear Cover ass’y. #5Disconnect all the wires/FFC cable.#6Remove the main frame.#7Main frame and main board. #8The panel.Note: DVI only for E2360T.BLOCK DIAGRAMNote: DVI only for E2360T.CONVERTER BLOCK DIAGRAM ConverterDESCRIPTION OF BLOCK DIAGRAM1. Video Controller Part.This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock.The pixel clock for each mode is generated by the PLL.The range of the pixel clock is from 25MHz to 149MHz.This part consists of the Scalar, ADC converter, TMDS receiver.The Scalar gets the video signal converted analog to digital, interpolates input to 1920 x 1080 resolution signal and outputs 8-bit R, G, B signal to transmitter.2. Power Part.This part consists of the one 3.3V regulators to convert power which is provided 12V in Adapter board, 12V is provided for convert circuit.3. MICOM Part.This part is including video controller part. And this part consists of Reset IC and the Micom.The Micom distinguishes polarity and frequencies of the H/V sync are supplied from signal cable.The controlled data of each mode is stored in scalar.ADJUSTMENTWindows EDID V1.0 User ManualOperating System: DOS, windows98, 2000, XP1. Parallel port settingEnter your bios, and do as followings.a) Integrated peripheralb) Super IO Devicec) Parallel port modeyou should set the” parallel port mode” to SPP for using the DOS EDID tool surely.2. EDID Write1. Connect the signal line of monitor with DDC recorder.2. Choose the DDC RECORD program, and it shows on the screen, then choose the correct source base on the monitor.3. Click “LoadFile”, then key in the manufacturer name, model name, product code, then choose the correct model name base on the monitor.(as Fig.2)4. Scan serial No. to DDC recorder by Bar Reader, then read again in the Verify SN.5. According to the message of DDC program, when the picture as fig.1 appears, it will show DDC record has finished.E2360S (Analog only)Fig.1Please check Manufacturer Name, Vendor Assigned Code, Monitor Name, Serial Number：*****[????????*****] (it must be the same as Bar Code),Week of Manufacture：**,Year of Manufacture：****,Checksum：** (It must be the same as the last byte of data table, as follows picture shows). Above of all must be right, then if it shows the green “PASS”, it means record succeeds ,the red “Fail” means record fails; Then check the power supply and signal line, and ensure they are connected well ,then do DDC record again from the third step.E2360S (Analog only)Fig.2TROUBLESHOOTING GUIDE1. NO POWER2. NO RASTER (OSD IS NOT DISPLAY)-LIPS3. NO RASTER (OSD IS NOT DISPLAY)-MSTAR4. TROUBLE IN DPM5. POWER6. RASTERWIRING DIAGRAMNote: DVI only for E2360T.EXPLODED VIEW PARTS LISTRef. No. TPV part No.LGE part No.Description010 705GFACS016 ABJ73308504 BEZEL ASS'Y 020 KEPCAQG1 EBU60704503 KEY BOARD 030 LEPCAQG1EBU60934810LED BOARD040 750GMT230W5A11M0LG COV30101224 PANEL LM230WF5-TRA1-7F1-A0 FQ LTD 050756GQACB-KL010--00 EBU60714340 MAIN BOARD(CBPCAAWLGQ3)-E2360S 756GQACB-KL009--00EBU60714341 MAIN BOARD(CBPCAARLGQ3)-E2360T060Q15G0909101101 MDQ62638101MAINFRAME-E2360S Q15G0909101201 MDQ62638102 MAINFRAME-E2360T 070 705GFACS012 ACQ83873708 REAR COVER ASS'Y-E2360S 705GFACS013ACQ83873709 REAR COVER ASS'Y-E2360T 080 705GFACS004 ACQ83873802 BASE ASS'Y 090 095G176J-10V01 COV30101415 FFC CABLE 10PIN 275MM 0.5MM 100 095G176J-50528 COV30101418 FFC CABLE 50 182 0.5 110 095G8022-7W506 N/A HARNESS 7P-6P+3P 250/300 120088G-35315FVCLN/AD-SUB CABLE 1500MMSCHEMATIC DIAGRAM1. Main BoardE2360S&TInput (DVI only for E2360T)Copyright © 2010 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only5Copyright © 2010 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use OnlyCMVCC12,3,5Copyright © 2010 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use OnlyCopyright © 2010 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only2. Key BoardCopyright © 2010 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only3. LED BoardCopyright © 2010 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use OnlyJul.2010 P/NO: Printed in China。