LCD TV SERVICE MANUAL - diagramas.diagram...

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TROUBLESHOOTING 1. No power Symptom 1) Minute discharg e doesn’t occur at module. 2) Front LED doesn’t come into action. Start check NO Plug in a power cord Is inserted a pl ug in power cord? Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes YE S Connect a cable. Plasma (EL11), LC D(SC100 ) NO Is connected the Line Filter and PSU? - 14 - YE S NO Replace the fuse Is normal the fuse of PSU? Plasma (F101), <strong>LCD</strong>(F111 ) YE S NO Connect the 13pin cable. Is it connected tha t PSU and 13 pin cable in VSC board ? YE S After re mo ve all cab les con nec ted to PSU (except the C N101) , author izes the AC voltage marking on manual. When ST -by 5V doesn’t operate , replace PSU LGE Internal Use Only
2. Protection mode Symptom 1) After once shining, it doesn’t discharge minutely from module. 2) The relay falls. ( The sound is audible "Click") red from green . 3) It is converted w ith the color where the front LED is Start check Replace the power board Is output the no rmality Low/High Voltage except Stand-by 5V? NO Is the PSU no rmal? YE S Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes After connecting we ll each connector the normality it operates? NO Replace the power board Is the each connector norma l? YE S Replace Y-B/D Is no rmal the output voltage after remove P1 connector of Y-B/D? NO Is no rmal the fuse (FS2 ,FS3 ) on Y-B/D? NO Is t he Y- Board no rmal ? - 15 - Replace the fuse YE S YE S Replace Z -B/D Is no rmal the output voltage after remove P1 connector of Z-B/D? NO Is no rmal the fuse (FS1 ,FS2 ) on Z-B/D? NO Is the Z - Board no rmal ? YE S Replace the fuse YE S After remove P100,110 output voltage normality: Re place Ri ght X-B/ D Afte r remo ve P200,210 output voltage normality: Replace Left X- B/D Is normal the output voltage after remove P100,110,200, 210 connector of X- B/D? NO Is t he X- Board no rmal ? LGE Internal Use Only
Page 1 and 2: LCD TV SERVICE MANUAL CHASSIS : LP7
Page 3 and 4: Copyright © 2007 LG Electronics. I
Page 5 and 6: IC Remove/Replacement Some chassis
Page 7 and 8: 5. General Module Specification No
Page 9 and 10: 10. HDMI input ( DTV ) No Resolutio
Page 11 and 12: 6. EDID Caution * Use the proper si
Page 13: 8. White Balance * Caution : Before
Page 17 and 18: 4. In case of becomes unusual displ
Page 19 and 20: 8. In the case of becomes unusual d
Page 21 and 22: 15. In case of becomes unusual disp
Page 23 and 24: 19. HDMI mode Yes Down load EDID da
Page 25 and 26: BLOCK DIAGRAM Copyright © 2007 LG
Page 27 and 28: Copyright © 2007 LG Electronics. I
Page 29: P/NO : MFL39106202 Aug., 2007 Print

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