Download Service manual LM2130W
Transcript
6HUYLFH PDQXDO /0: ˉCATALOGˉ 1. Safety item which should be paid attention to when maintaining......................................................... 1 2.Monitor appearance and hardware structure introduction...................................................................... 2 2-1 Front appearance drawing................................................................................................................................ 2 2-2 Back appearance drawing................................................................................................................................. 3 2-3 Explosion Drawing.............................................................................................................................................. 4 2-4 System Block Diagram...................................................................................................................................... 5 2-5 D-SUB Pin Definition........................................................................................................................................ 5 2-6 DVI Pin Definition............................................................................................................................................... 6 2-7 OSD key function.............................................................................................................................................. 6 3.Maintaining instruments and test equipment..................................................................................................... 8 3-1 Instruments............................................................................................................................................................... 8 3-2 Test equipment........................................................................................................................................................ 8 4.Problem analysis............................................................................................................................................................... 9 5.Monitor disassembly and assembly flow........................................................................................................... 14 6. Maintaining parts form............................................................................................................................................... 17 7.Principium.......................................................................................................................................................................... 17 7-1 AD Board Principium....................................................................................................................................... 21 7-1 Power Board Principium................................................................................................................................. 21 7-1 Inverter Board Principium.............................................................................................................................. 20 8.Test method after maintenance .............................................................................................................................. 21 8-1 Test method when disconnected with the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ÿW XVH NHWRQHVXFK DV DFHWRQH HWKDQRO WROXRO DFHWLF DFLG PHWKDQH FKORULGH DQG HWF %HFDXVH WKHVH PDWHULDOV FDQ FDXVH GDPDJH WR WKH /&' PRQLWRU VXUIDFH :KHQ WKH /&' PRQLWRU KDSSHQV WKH DEQRUPDO VLWXDWLRQ H[SHFLDOO\ DEQRUPDO VRXQG DQG VPHOO FDQ EH LGHQWLILHG SOHDVH XQSOXJ WKH VRFNHW LPPHGLDWHO\ :KHQ PDLQWDLQLQJ WKH /&' PRQLWRU WR DYRLG WKH GDQJHU RQH PXVW FRPSOHWHO\ ILQLVK WKH PRQLWRU DVVHPEO\LQFOXGLQJ GULYLQJ WKH VFUHZV LQWR WKH PRQLWRU FRYHUV DQG WKHQ WXUQ RQ WKH PRQLWRU DQG WHVW 2.Monitor appearance and hardware structure introduction 2-1 Front appearance drawing No Function 1 It can show and change model 16:10/AUTO/4:3 when OSD 2 AUTO 3 MENU 4 POWER Blue Indicator light not shown. Automatically adjust clock and phase when OSD is not shown, or press in three consecutive seconds to switch VGA/DVI signal. Press it to open the OSD Menu, to select Menu options when the OSD Menu is displayed. Power on or off Blue and flicker LEDOFF 5 EXIT 6 DOWN 7 UP Volume adjust hot key when OSD is not displayed, used for returning to former OSD when OSD menu is displayed. Contrast ratio key when OSD is not displayed, move the selected menu down when OSD is displayed, decrease the value when enter into the OSD. Brightness key when OSD is not displayed, move the selected menu up, increase the value when enter into the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˖,W FDQ VKRZ DQG FKDQJH PRGHO $872 ZKHQ 26' L QRW VKRZQ $XWR DXWRPDWLF DGMXVWPHQW NH\˖DXWRPDWLFDOO\ DGMXVW FORFN DQG SKDVH NH\ ZKHQ 26' LV GLVSOD\HG $XWR SUHVV LQ FRQVHFXWLYH VHFRQGV WR VZLWFK 9*$'9, VLJQDO 0(18 0(18 0(18˖3UHVV LW WR RSHQ 26' PHQX WR VHOHFW 0HQX RSWLRQV ZKHQ WKH 26' PHQX LV GLVSOD\HG 32:(5 32:(5 ˖3RZHU RQ RU RII (;,7 (;,7 (;,7˖9ROXPH DGMXVW KRW NH\ ZKHQ 26' LV QRW GLVSOD\HG XVHG IRU UHWXUQLQJ WR IRUPHU 26' ZKHQ 26' menu is displayed. 6. DOWN ˖Contrast ratio key when OSD is not displayed, move the selected menu down when OSD is displayed, decrease the value when enter into the OSD. 7. UP ˖Brightness key when OSD is not displayed, move the selected menu up, increase the value when enter into the OSD. * Press the “MENU” button to start the OSD function. * Pree” ”or” ”button to select adjusting function * Press “MENU” button to enter into the function which is going to be adjusted. * Pree” ”or” ”button to change the present setting value of the function. * Press “Exit” to leave the OSD menu or return to the former action, and it can store the change points Attention: * Press button to move OSD in a numerical order. * Press button to move OSD in a reverse numerical order.ҏ * Language˖ENGLISHǃFrancaisǃDeutschǃEspanolǃItalianoǃJapaneseǃKoreanǃsimplified Chinese. * Input signal choice: VGA input signal is analogue; DVI input signal is digital 8 0DLQWDLQLQJ ,QVWUXPHQWV DQG 7HVW (TXLSPHQW 'HILQLWLRQ 'HIHFW FLUFXLW ERDUG DQG WKH LQVLGH VLJQDO FDEOH FKDQJH ,QVWUXPHQWV 0XOWLPHW (OHFWULF VFUHZGULYH &URVV KHDG GULYHU +H[ VFUHZ GULYHU 7HVW HTXLSPHQW HTXLSPHQW3& IRU WHVW 3.Maintaining Instruments and Test Equipment Definition: Defect circuit board and the inside signal cable change. 3-1 Instruments 1.Multimet 2.Electric screwdriver 3. Cross head driver Hex screw driver 3-2 Test equipment PC for test 8 PDF created with pdfFactory Pro trial version www.pdffactory.com 4.Problem analysis Problem phenomenon Problem analysis Maintenance Test Light on test Flickering dot Display abnormally Bright dot dark dot back light light leakage MURA inspect the panel Image conglutination replace the panel Bright spot Minute granule Defect dot Picture retention Group bright dots Other defect Next stop surface NG Inspec tion Accomplish A 9 PDF created with pdfFactory Pro trial version www.pdffactory.com Problem phenomenon Problem analysis Maintenance Test A Display interference Inspect PCB Power display abnormal change A/D board on change power board change inverter Flickering Flickering after shock Inspect panel change panel No display after shock change AD board Waver Inspect PCB change power board Inspect panel PANEL No back light Next step B NG Inspe ction accomplish 10 PDF created with pdfFactory Pro trial version www.pdffactory.com Problem phenomenon Problem analysis Maintenance Test B change A/Dboard Whit screen display Inspect PCB start-up delay Inspect PCB change power board change inverter change key board brightness nonuniformity Inspect PCB change power board change inverter no back light when shock Inspect PANEL change panel No signal Inspect PCB change AD board Inspect wire change signal cable Inspect panel change DVI cable RGB display abnormal Grey scale abnormal change panel next step NG inspe ction C accomplish 11 PDF created with pdfFactory Pro trial version www.pdffactory.com Problem phenomenon Problem analysis Maintenance Test C H. line defect Inspect PCB change A/D board Inspect panel change panel Inspect PCB change A/D board V. broken line H. broken line V. band H. band Power saving abnormal change A/D board Special smell Inspect PCB change power board change inverter next step NG inspe ction accomplish 12 PDF created with pdfFactory Pro trial version www.pdffactory.com Problem phenomenon Problem analysis Maintenance Test change A/D board Power on & off abnormal change power board No electricity Power abnormal Inspect PCB off Inspect PCB change inverter change key board Inspect wire change key board wire Inspect wire change power cord change AD board LED display abnormal LED no light Inspect PCB change power board change inverter LEDdark change key board LED abnormal Inspect wire change key board wire LEDdamage LEDflickering next step NG inspe ction accomplish 13 PDF created with pdfFactory Pro trial version www.pdffactory.com 0RQLWRU 'LVDVVHPEO\ DQG $VVHPEO\ )ORZ ϡ 0XVW DYRLG SDQHO VFUDWFK ϡ 0XVW SUHYHQW VWDWLF SUREOHPV 'LVDVVHPEOH WKH VXSSRUW QHFN 'LVDVVHPEOH WKH IURQW FRYHU 'LVDVVHPEOH WKH SDQHO 'LVDVVHPEOH $' ERDUG SRZHU ERDUG DQG LQYHUWHU ERDUG 'LVDVVHPEOH WKH VSHDNHU FRYHU ˊ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s following photo shown, take off eight screws used for panel fixation. 9. Hold up panel softly and plug off two lamp wire as photo shown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