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：
液晶显示器维修手册
液晶显示器维修手册一、简介液晶显示器是现代电子设备中广泛使用的显示技术，但由于复杂的内部结构和电路，常常出现各种故障。
本手册将介绍液晶显示器的常见问题及其维修方法，以帮助读者解决问题并提高维修效率。
二、故障排查与诊断1. 无法开机- 检查电源线是否插紧- 检查插座是否通电- 检查是否有电源故障2. 显示画面异常- 出现花屏现象：重新插拔视频线，检查信号源是否正常- 显示模糊或颜色失真：检查信号线接触是否良好，进行芯片检测和更换- 亮度调节失效：检查背光灯管是否破损，更换不良效果3. 屏幕闪烁- 检查显示器与电脑的连接线是否接触良好- 检查电源是否稳定- 检查显卡驱动是否需要更新4. 触摸功能失效- 清洁触摸屏幕的表面，检查表面是否有划痕或损坏- 检查触摸板与主板的连接线是否断开- 重新校准触摸功能三、拆解与更换零件1. 工具准备- 甲字螺丝刀- 螺丝刀套装- 塑料开胶棒- 吸盘2. 拆解步骤a) 关闭电源，拔下电源线和视频线b) 使用吸盘把显示器前面板抽离c) 依次拆解背板、电路板和遮盖板，注意不要划伤电路板和相关零件3. 更换零件a) 根据故障现象找出需要更换的零件b) 谨慎拆卸故障部件，注意不要损坏其他零件c) 插入新零件，确保与相关线路连接稳固d) 重新组装显示器，注意线路的正常布放和连接四、维护与保养1. 清洁- 使用专用洁净布轻轻擦拭显示屏表面- 避免使用有腐蚀性的溶剂和清洁剂- 定期清理内部灰尘2. 使用- 避免长时间高亮度显示，以免影响屏幕寿命- 避免频繁开关屏幕，以减少电视背光管和电路板的损耗- 避免触摸屏幕用力过度，以免划伤或损坏五、安全注意事项1. 在拆解显示器时，务必注意安全，避免触电或其他意外伤害2. 当更换零件时，确保显示器断电，避免触及有电的部件3. 拆解零件时要轻拿轻放，避免损坏显示器的内部结构和电路4. 若遇到不确定的情况或操作困难，应该寻求专业人员的帮助，避免损坏设备六、结语本手册对液晶显示器的维修过程进行了简要介绍，包括故障排查与诊断、拆解与更换零件、维护与保养等方面。
液晶电视维修服务手册-go
液晶电视维修服务手册目 录机型： 50A6 DH1WK0A040350A6M DH1WK0A0502 50K5 DH1QZ0M1503 LE50A31 DH1WK0A0603机芯：MSD6A638（分体板）0090724751F 电源板：0090726261一、产品介绍 (2)1、产品外观介绍 (2)2、产品技术参数、功能特点介绍 (3)二、机芯方案概述 (5)三、机芯电路方框图 (5)四、电源分配图 (5)五、机芯板原理及维修 (6)（一）、机芯原理说明 (6)1、电源部分 (6)2、控制部分 (8)3、存储部分 (8)4、遥控/按键电路 (9)5、DDR 电路 (9)6、接口部分 (10)7、开关机静音电路 (10)8、功放电路 (11)9、Tuner射频 部分 (11)（二）、机芯板介绍 (12)1、机芯板实物图接口介绍 (12)2、机芯板实物图芯片分布介绍 (13)（三）机芯常见故障维修流程图及维修方法 (13)（四）、主要IC集成块功能引脚定义及参数............................ . (15)六、分体解码板和电源板电路图 (16)（一）、分体板解码板 (16)（二）、电源板 (16)七、产品BOM明细、结构规格书 (17)1、主要模块BOM (17)2、结构规格书 (18)八、软件升级方法 (18)1、正常升级方法 (18)2、异常升级方法 (18)液晶电视维修服务手册一、产品介绍1、产品外观介绍：（1）外观示意图：前视图（含本控按键）：后视图（含端子图）：（2）遥控器图片2、产品技术参数、功能特点介绍：（1）技术参数基本参数：型号 50A6/50A6M/50K5 LE50A31 产品类别（LCD/LED） LED背光颜色 黑色金色外观（窄边框/拉丝面板/高光） 高亮+喷漆遥控器 A07底座型号 LD6540壁挂型号 无图像参数：屏幕比例（4:3/16:9） 16:9屏分辨率 1920×1080运动图像处理（60HZ/120HZ/240HZ） 60HZ图像制式 PAL/ NTSC/ SECAM亮度 300cd/m2对比度 4000:1声音参数：自动音量控制（是/否） 是伴音制式 DK、BG、I、MMAXXBass平板重低音（是/否） 否SRS环绕立体声（是/否） 否九段均衡器（是/否） 否规格参数：不含底座（mm） 1127x62x656 (mm)产品尺寸含底座（mm） 1127x238x690(mm)不含底座（kg） 10.4kg产品重量含底座（kg） 10.9kg整机功率（W） 110W内置伴音功率(W) 8W*2电压范围 140-264V 50Hz环境要求 /（2）、功能特点端子：AV输入 1AV输出 1VGA 0YPbPr 1DSMB数字接口 0同轴接口 1网络接口 1USB接口 3HDMI 3模卡卡槽 0流媒体卡槽接口（SD卡） 1RF射频端子(ATV/DTV) 1数字电视接口（插入CAM+CI卡） 0耳机接口 0功能：开放式模卡平台（是/否） 否网络视频（华数/百视通/优朋/否） 华数2D转3D（偏光式/快门式/否） 否支持无线键盘、鼠标（是/否） 是内置无线WIFI（是/否） 是Android操作系统版本 4.4支持移屏/甩屏/多屏互动 否家电物联 否海尔之家 否语音控制 否画中画 否特殊功能其他手机/电脑传屏软件名称 /支持无线网卡型号 RTL8188ETV二、机芯方案概述MSD6A638一款支持国内规格的高端液晶电视机芯方案，该机芯模块视频部分支持1路A V信号输出，1路A V信号输入，1路YPbPr视频信号，3路HDMI，1路YPbPr音频，可支持3路高清流媒体USB_2.0输入，支持数字电视DTMB。
液晶显示器维修教程
液晶显示器维修教程
液晶显示器维修通常涉及以下几个方面：
1. 检查电源：首先，确保显示器的电源线连接牢固，并且
电源插座正常工作。
然后，检查显示器的电源开关是否正
常工作。
如果电源正常，但显示器仍无法启动，可能是电
源板出现故障，需要更换。
2. 检查信号线：确认显示器的信号线连接牢固，并且连接
到正确的接口。
如果信号线没有问题，可以尝试连接到不
同的电脑或设备上，以排除信号源的问题。
3. 检查显示屏：如果显示器仍然无法启动或显示画面异常，可能是显示屏本身出现故障。
可以使用一个工作正常的显
示器连接到同一台电脑上，以确认是显示器的问题还是电
脑的问题。
如果问题出现在显示器上，可能需要更换或修
复显示屏，这需要专业的技术支持。
4. 清洁显示器：有时显示器出现模糊、模糊、颜色不正常
等问题，可能是由于灰尘或污垢的堆积。
可以使用柔软的
干净布轻轻擦拭显示屏，或者使用专门的显示器清洁剂进行清洁。
注意不要使用含有酒精或溶剂的清洁剂，这可能会损坏显示屏。
请注意，在进行任何维修操作之前，务必断开显示器的电源，并且根据显示器的使用手册或与制造商联系以获得正确的维修方法和建议。
如果您不确定如何进行维修，建议寻求专业的技术支持。
清华同方 TGJ-19L82F LCD显示器维修手册说明书
维 修 手 册客户/品牌 机种名 清华同方 TGJ-19L82F本手册适应机种：TFT19W80PS 二级能效版本发布日期变更说明对外机种名对内机种名编辑A00 May-30-2010Initial Release TGJ-19L82F T9AKM5NDYLQ5N2JT9ALM5NYYLQ5N2JTPV-BJ-RainsunA01 Aug-18-2011增补机种名增加软体更新SOP TGJ-19L82FT9BKM5NDYLQ1N2JTPV-BJ-RainsunT9BKM5NDYLQ2N2JT9AHM5NYYLQ5N2JT9ALM5NYYLQ3N2JT9AKM5NDYLQ3N2J1. 技术规格 (4)1.1 基本特性 (4)1.2 工厂预设模式 (5)1.3 VGA接口说明 (5)2. 操作说明 (6)2.1 连接PC (6)2.2 控制按钮 (6)2.3 OSD菜单调整 (8)3. LCD面板性能 (10)3.1 基本特性 (10)3.2 功能方框图 (11)3.3 最大极限参量 (11)3.4电性能参数 (12)3.5 光性能参数 (13)3.6 LVDS管脚分配 (13)4. 功能方框图 (14)4.1 LCD整机方框图 (14)4.2 主板方框图 (14)4.3 电源板方框图 (15)4.4 软体流程图 (16)5. 线路原理图 (17)5.1 主板---715G3244-2 (17)5.2 电源板电路图 (22)5.3 按键板电原理图 715G2835-2 (24)6. 机构爆炸图 (25)7. 机构拆解图 (26)8.印制板图PCB (27)8.1主板 main board 715G3244-2-2 (27)8.2 电源板Power Board 715G2510-2-4 (29)8.3 按键板KeyBoard 715G2835-2 (30)9. 维修处理 (31)9.1 维修工具仪器 (31)9.2 故障处理流程 (31)9.3 软体更新操作SOP (35)9.4 工厂模式调整 (40)9.5 改写DDC信息步骤 (41)10.料件清单BOM (44)10.1机种T9AKM5NDYLQ5N2J BOM (44)1. 技术规格1.1 基本特性显示器型号TGJ-19L82FLCD 面板Driving system TFT Color LCDSize 480mm(19”)diagpnal Active Display Area408.24mm (W)×255.15mm(H)Pixel Pitch 0.283 mm×0.283mm输入信号VideoR,G,B Analog Interface，75ohm,0.7V PositiveSeparate Sync. H/V TTLH-Frequency 30kHz—80kHzV-Frequency 55Hz--75Hz输入接口D-Sub 15pin显示颜色 16.7MColors 点频 135MHz最大分辨率 1400x900@60Hz即插即用VESA DDC2B DDC/CI功率消耗工作状态<45W待机模式 <2W关闭状态 <1W输入电源90~264VAC,47~63Hz, 1.5A Max supply current 环境条件Operating Temp: 0° to 40°CStorage Temp.: -20° to 60°COperating Humidity : 8% to 80%结构尺寸（含支架)438.5(W)x358(H)x210 (D)mm 重量(净重): 3.8kg安规要求CCC CSC1.2 工厂预设模式编号显示方式行频（KHZ）场频（HZ）1 640×480 31.469 59.9402 640×480 37.861 72.8093 640×480 37.500 75.004 800×600 35.156 56.2505 800×600 37.879 60.3176 800×600 48.077 72.1887 800×600 46.875 75.0008 1024×768 48.363 60.0049 1024×768 56.476 70.06910 1024×768 60.023 75.02911 1280*1024 63.981 60.02012 1280*1024 79.976 75.02513 1440*900 55.935 602. 操作说明2.1 连接PC按电源开关即可开关显示器。
液晶显示器维修手册
液晶显示器维修手册第一章: 引言液晶显示器维修手册是为了帮助用户了解液晶显示器的维修和故障排除方法而编写的。
本手册将提供液晶显示器常见问题的解决方案和处理方法，以确保用户能够迅速恢复屏幕的正常运行。
第二章: 基础知识在进行液晶显示器维修之前，用户需要了解一些基础知识。
液晶显示器是通过液晶技术显示图像的设备。
它是由像素组成的，每个像素都由液晶层和光源背光组成。
用户需要熟悉液晶显示器的组成部分、原理和常见故障类型。
2.1 液晶显示器的组成部分液晶显示器由多个组件组成，包括面板、背光源、控制电路、接口等。
用户需要了解这些组件的功能和相互关系。
2.2 液晶显示器的工作原理液晶显示器的工作原理包括电压控制液晶颗粒来控制光的通过、背光源的照明方式以及图像传输的过程。
用户需要熟悉这些原理，以便更好地进行维修工作。
2.3 常见故障类型液晶显示器常见故障类型包括无法开机、黑屏、色彩失真、图像闪烁等。
用户需要了解每种故障类型的原因和相应的维修方法。
第三章: 维修步骤本章将详细介绍用户在维修液晶显示器时需要采取的步骤。
3.1 故障诊断在开始维修前，用户需要先进行故障诊断。
通过观察、测试和排除法等方法，找出故障产生的原因。
3.2 维修工具和材料准备用户需要准备一些常用的维修工具和材料，如螺丝刀、电压表、焊接工具等。
这些工具和材料在维修过程中起到关键作用。
3.3 维修操作步骤在进行维修操作时，用户需要按照以下步骤进行：1) 关闭电源并拔掉电源线；2) 拆卸外壳以获得维修接触面；3) 检查电源问题，如电源线是否损坏或电源板是否故障；4) 检查信号线或接口问题，确保连接良好；5) 检查背光源是否正常运行；6) 检查控制电路和面板问题；7) 清洁显示屏和其他组件；8) 重新组装并测试修复效果。
第四章: 常见故障与解决方案本章将列举液晶显示器常见的故障情况，并提供相应的解决方案。
4.1 无法开机当液晶显示器无法开机时，可能是由于电源故障、信号线松动或电源线接触不良等原因造成。
创维液晶电视各机芯维修讲解手册
手头无资料,试代换存储器24C32 后,长
时间老化机器正常
20L98TV/8K60 TV 图像拖尾,AV 正常 AV 图像正常,说明故障出现在中放电
路,试代换TDA9886TS,380W38-02,故
障依旧.怀疑声表面K7262 坏,换之正常
19L11IW/8K60 搜不到台 首先查高频头的供电，发现没33V 调
其实的上门的过程中碰到此类问题不
妨先检查一下续流二极管，是否击穿。
32L16SW/8TTK 刚开机无图,菜单出不来. 更换24C432
32L16SW/8TTK 不定时出现有声无图像现象 根据故障现象，发现主板连接到屏的插
排（靠近屏的一端）有松动，用一薄纸
垫在插排的下方，使插排接触可靠后恢
电及其外围电路均正常，怀疑是高频头
本身性能不良引起 ，换之故障排除
（5200-380651-22）。
32L88IW/8TT3 七彩屏 因为TV 字符是在V12 里产生的，VGA
字符是在缩放TSU66AJW1 里产生的，
用8TT9 的遥控按VGA，此操作是在
无字符下进行的。VGA 字符正常，证
严重发热，断开U3 测负载无短路现象，
更换U3 后工作正常。
22LEATV/8TT6 TV 无图有点暗影 用AV 试机正常，检查TV 通道与切换
电路，都正常，进入总线后RESET 后
机器正常。
20LBATV/8TG3 无台，ＡＶ闪一下 当故障出现时输入VGA 信号显示正
常,怀疑VPC3230 不良换新后故障依
发现C305 有点变黄，拆下发现该电容
已严重短路，于是找来一只50V10UF
戴尔E1715S 17英寸液晶显示器维修手册说明书
Description
Q’ty
SCREW (KEY BOARD-BEZEL)
4
SCREW (KNOB_CONTROL)
1
SCREW (REAR_COVER-MAINFRAME)
2
SCREW (REAR_COVER-MAINFRAME)
4
SCREW (MAIN BOARD-MAINFRAME)
1
SCREW (POWER BOARD-MAINFRAME)
6
3.1 Disassembly Procedures: Step
S1. Before disassemble
Figure
Remark
Turn off power, Unplug external cables from product
S2.Remove the STAND-BASE
ASS’Y
To remove the stand: 1. Wedge your fingers Press and hold the stand release button. 2. Lift the stand up and
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. DELL could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, DELL has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by DELL must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected. Hereafter throughout this manual, DELL Company will be referred to as DELL.
三星BX2250N液晶显示器维修手册
3. Disassembly and Assembly
3. Disassembly and Assembly
This section describes the disassembly and reassembly sequences for this monitor. Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.
LCD-Monitor
Chassis : LB524YS / LB524LS : BX2250 / BX2250N / BX2350 / BX2450 / BX2450N / BX2450L Model
SERVICE
4. Troubleshooting....................................................................................................... 4-1
4-1. Troubleshooting............................................................................................................... 4-1 4-2. When the power does Not Turn on.................................................................................. 4-2 4-3. When the screen is blank (Analog). ................................................................................. 4-4 4-4. When a blank screen is displayed (Digital). ..................................................................... 4-7 4-5. Error Examples and Actions.......................................................................................... 4-10 4-6. Adjustment..................................................................................................................... 4-11
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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。