AOC E941sa Service Manual
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Service Manual AOCe941series 41 No picture (LED orange) Whitescreen Check flow chart for the no signal No picture Check signal wire Check U404 Vout=3.3V; Q409-out=1.8V Replace signal wire check X401 waveform replaceU404,Q409,Q410,Q405 &around device replace X401 Check CN101-RGB/HS/VS Check U402/U403 out Check Correspondent component OK NG NG NG NG OK OK OK Replace U401 Updata soft data OK NG Check connector Replace Panel White screen Measure Q404-base is low level? Check Q405=5V Or CN403 solder? Check around device Check X401 waveform Check U403/U402 Check flow chart For the white screen Replace X401 Check around device Updata soft Replace U402/U403/U401 NG NG NGNG OK OKOK OK
Service Manual AOCe941series 42 Check flow chart For the no power Check CN901 100-240V？ Check rectified voltage-C907 Check AC supply checkFuseF901/ rectified device L902/BD901/C901/C902 Check voltage of IC901-8pin checkcomponent R904/R932 Check T901(1-3)out-Vcc Check D901/R909/C903 Check IC901-drive out Check MOS-Q901pin(G/D) Check/replace IC901 Check R910/R938/Q901/T901pri Around component Check T901sub rectified out 5V/12V , Check rectified diode D905/D906 &fiter capacitor Check-- open load Check photo-coupler IC902&IC903 OK NG OK OK OK OK OK NG NG NG NG NG NG Power Board--- No Power 5V/12V
Service Manual AOCe941series 43 No Backlight of panel Check flow chart for the Inverter No Backlight After Power off,check C801/C802？Q824? Check ON/OFFsignal Check voltage of F801-12V？ Open F801, voltage-12V Return check Power Check main board After Power off,check Q805/Q808/R804/C825 Check IC801-6pin RT waveform? Check aroud component Re place IC801 Check IC801-out9/10pin-? Check Q802 waveform? Check T801 out voltage? Check feedback circuit Check /Replace C801-C803 Check around component Replace device OK NG OK OK OK OK OK OK OK NG NG NG NG NG NG NG Check IC801 -12pin=12V pinRT waveform?
Service Manual AOCe941series 44 Key Board---OSD no working 9.3 Factory mode adjustment After replacing the Main board and the Panel, Check for enter the Factory mode ,then re-writing DDC is necessary. Ste p: Press MENU button and hold,reinsert the Power cord , then ,press MENU , the monitor will may enter Factory OSD Menu. Then Press . Factory OSD Menu will appear in the screen. Check flow chart For the key board OSD is unstable or not working Is Key Pad Board connecting normally? Is Button Switch normally? Is Key Pad Board normally? Check Main Board Connect Key Pad Board Replace Button Switch Replace Key Pad Board OK NG NG NG OK OK
Service Manual AOCe941series 45 By select this “F” button to enter Factory OSD Menu. 9.4 Writing DDC program step After replacing the Main board and the Panel, Check if white-balance is within the specs ,then re-writing DDC is necessary. 1. Prepared the PC with Windows XP system, DDC recording device (12V)for figure below 2. Connect the DDC recording device and the PC through PC parallel port 3. setup “Port95nt” driver program to PC , 4. select relevant program and run it, below figure will appear 5, Press “LoadFile”, select EDID -model of product, and select input port; 6. key in SN,and other informatiom, key-press “Pragram” button;
Service Manual AOCe941series 48 10.BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.com.cn/hello1.asp for the latest information. 10.1 Model：e941VA--T995NTNBWVK2PNJ Location Part number Description Remark 040G 581 26704 SHIPPING LABEL 2nd source 040G 581689 4A BARCODE LABEL FOR 1 3 052G 1211 A Conductive Tape 55mm *45mm *0.08mm (单导） 2 052G 1211 B Conductive Tape 85mm *40mm *0.09mm (单导) 1 070GHDCP500HDC HDCP CODE 2 078G0025501 YA SPK 4 OHM 2.5W 48X28 220 140 SUNLINK 1 089G 17356X554 AUDIO CABLE 1 E08905 089G 175 8 G FQE41177F USB CABLE 1800mm A+B 1 E08905 089G 175 8 H USB CABLE A+B 1.8M 2nd source E08902 089G 725CAA DB D-SUB CABLE 2nd source E08902 089G 725GAA DB D-SUB CABLE 2nd source E08902 089G 725HAA DB D-SUB CABLE 1 E08902 089G 725LAA DB D-SUB CABLE 2nd source E08907 089G179J30N521 FFC CABLE 30PIN P1.0 210mm 2nd source E08907 089G179W30N521 FFC CABLE 2nd source E08901 089G404A15N HL AC POWER CORD 1500mm 1 E08901 089G404A15N IS AC POWER CORD 1500MM Europe Reg. 2nd source E09517 095G176J 10544 FFC CABLE --10 --160 --0.5 1 E09505 095G8014 5DH15 Wire harness 5P(2008)-5P(2008) 440MM 2nd source E09505 095G8014 5XH15 Wire harness 5P(2008)-5P(2008) 440MM 1 E09508 095G8014 6DH52 HARNESS 6P(PLUG)-6P(A1253HA HR) 260mm 2nd source E09508 095G8014 6WH52 HARNESS 6P(PLUG)-6P(A1253HA HR) 260mm 1 0M1G 130 5120 SCREW 4 0M1G1030 6120 SCREW M3X6 1 0M1G1030 6120 SCREW M3X6 1 0M1G1030 6120 SCREW M3X6 3 0Q1G1030 6120 SCREW 1 0Q1G1030 6120 SCREW 4 E750 750GMV190W3061N000 LCD TPM190A1-MWW3 R05A FQ TPV 1 756GJ9CB AK010 MCU ASSY main board CBPC9NTA1QYJ U402 056G2233 11 IC Pm25LD020C-SCE SIOC-8(150mil) 2M 2nd source SMTCR-U402 100GANV9001B11 e941Va CBPC9NTA1QYJ MIAN BOARD 715G3737 1 ADPC91603YY1J POWER G2892-P01-020-X-2-100308 1 GND1 009G6005 1 GROUND TERMINAL 1 CN602 033G3802 4 BH F CONNECTOR 1 CN602 033G3802 4 BH L conn 2.0mm 4p 2nd source 040G 45762412B CBPC LABEL 2 IC902 056G 139 3A IC PC123Y22FZ0F 1 IC902 056G 139900 PHOTO COUPLER TLP421F 2nd source IC601 056G 616 51 IC APA2071JI-TUG 3.1W DIP-16 1 NR901 061G 58100 WD RST NTCR 10 OHM +-20% 5A THINKING 1 C908 063G 10747410V 0.47UF 275VAC ARCO 2nd source C908 063G107K474 6S CAP X2 0.47UF K 275VAC 2nd source C908 063G107K474 US 0.47UF +-10% 1
Service Manual AOCe941series 49 C903 065G305M1022BP Y2 1000PF M 250VAC Y5P 1 C902 065G305M1022BP Y2 1000PF M 250VAC Y5P 1 C900 065G306M3322BP 3300PF 20% 1 C918 067G215A1024KV EC 1000uF 25V 12.5*20mm 2nd source C918 067G215A1024LV LOW ESR EC 1000uF 25V M 12.5*20mm 1 C925 067G215D4714KV E.C 105℃ CAP 470UF M 25V ED SERIES 2nd source C925 067G215D4714LV LOW ESR EC 470uF 25V M 10*16mm 1 C921 067G215S1023KV EC CAP 105℃ 1000UF M 16V 1 C922 067G215S4713KV EC 105℃ CAP 470UF M 16V 2nd source C604 067G215S4713LV LOW ESR EC 470uF 16V M 10*12.5mm 1 C922 067G215S4713LV LOW ESR EC 470uF 16V M 10*12.5mm 1 C907 067G315Z10115K EC.100UF 450V 18*40mm 2nd source C907 067G315Z10115L EC 100uF 450V M 18*40mm 1 L901 073G 174 65 H2 LINE FILTER 30mH MIN 2nd source L901 073G 174 65 S2 LINE FILTER 30mH MIN 1 L905 073G 253 91 H CHOKE COIL 2nd source L906 073G 253 91 H CHOKE COIL 2nd source L906 073G 253 91 L CHOKE BY LI TA 1 L905 073G 253 91 L CHOKE BY LI TA 1 L907 073G 253191 H IND CHOKE 1.1uH DADON 1 T901 080GL22T 3 N1 XFMR 490uH YUVA-1093 1 T901 080GL22T 3 S1 XFMR 490uH 2nd source CN901 087G 501 32 S AC SOCKET 1 CN901 087G 501 32 DL AC SOCKET DIP 3PIN+2PIN GROUND 2nd source CN601 088G 30214K DC PHONE JACK 5PIN +开口向下弹片 1 BD901 093G 50460 28 BRIDGE DIODE KBP208G LITEON 1 BD901 093G 50460514 BRIDGE KBP306G 3A/800V TSC 2nd source D905 093G 60334 DIODE SR506 5A/60V DO-201AD 1 D905 093G 60519 DIODE SR560 5A/60V DO-27 SECOS 2nd source CN902 095G 825 9X518 HARNESS 9P(SCN)-9P(PLUG) 120mm 1 705GQ793081 D901/D906 ASSY 1 051G 200 1 OIL FOR DISAPPEAR 2 D901 093G 52 66 DIODE FMX-12SL 10A/200V TO-220 2nd source D901 093G 52 69 DIODE YG902C2RSC 10A/200V TO-220F15 1 D906 093G 60251 FCQ10U06 2nd source D901 093G 60316 DIODE FCH10A20 10A/200V TO-220 2nd source D906 093G 60526 SCHOTTKY MBRF1060CT ITO-220AB 1 0M1G 930 8120 SCREW 2 HS2 Q90G6264 5 HEAT SINK 1 705GQ851001 OIL FOR DISAPPEAR ASSY 1 051G 200 1 OIL FOR DISAPPEAR 2nd source 052G 2191 A PAPER TAPE 1 705GQA57024 Q901 ASSY 1 Q901 057G 600 35 STP8NK80ZFP 2nd source Q901 057G 667 21 STP10NK70ZFP 1 Q901 057G 667516 FET 2SK3673 TO-220 FUJI 2nd source Q901 057G 667924 MOSFET SMK0965F 2nd source HS1 090G6064 1 HEAT SINK 1 0M1G 930 8120 SCREW 1 AD91603YY1SMTJ POWER BOARD FOR SMT 1
Service Manual AOCe941series 50 IC901 056G 379160 IC FAN6752MY SOP-8 1 R610 061G0603000 JF RST CHIPR MAX 0R05 1/10W FENGHUA 1 R907 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO 1 R918 061G06031002FY RST CHIPR 10KOHM +-1% 1/10W YAGEO 1 R602 061G0603103 JT RST CHIP 10K 1/10W 5% TZAI YUAN 1 R603 061G0603103 JT RST CHIP 10K 1/10W 5% TZAI YUAN 1 R604 061G0603103 JT RST CHIP 10K 1/10W 5% TZAI YUAN 1 R605 061G0603103 JT RST CHIP 10K 1/10W 5% TZAI YUAN 1 R609 061G0603103 JT RST CHIP 10K 1/10W 5% TZAI YUAN 1 R928 061G06032002FF RST CHIPR 20KOHM +-1% 1/10W FENGHUA 2nd source R925 061G06032002FF RST CHIPR 20KOHM +-1% 1/10W FENGHUA 2nd source R916 061G06032002FF RST CHIPR 20KOHM +-1% 1/10W FENGHUA 2nd source R928 061G06032002FT RST CHIP 20K 1/10W 1% 1 R925 061G06032002FT RST CHIP 20K 1/10W 1% 1 R916 061G06032002FT RST CHIP 20K 1/10W 1% 1 R606 061G0603273 JT RST CHIP 27K 1/10W 5% TZAI YUAN 1 R607 061G0603273 JT RST CHIP 27K 1/10W 5% TZAI YUAN 1 R920 061G06034701FF RST CHIPR 4.7KOHM +-1% 1/10W FENGHUA 2nd source R920 061G06034701FT RST CHIP 4K7 1/10W 1% 1 R905 061G0603471 JT RST CHIPR 470OHM +-5% 1/10W TZAI YUAN 1 R905 061G0603471 JY RST CHIPR 470 OHM 5% 1/10W YAGEO 2nd source R608 061G0805000 JT RST CHIPR 0 OHM +- 5% 1/8W TZAI YUAN 1 R919 061G08054700FF RST CHIPR 470 OHM +-1% 1/8W FENGHUA 1 R919 061G08054700FT RST CHIP 470R 1/8W 1% 2nd source RJ816 061G12060007JY RST CHIPR MAX0R05 7A 1/4W YAGEO 1 RJ802 061G12060007JY RST CHIPR MAX0R05 7A 1/4W YAGEO 1 R923 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA 1 R912 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA 1 R910 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA 1 R909 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA 1 R930 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN 1 R929 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN 1 R903 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN 1 R934 061G12062003FF RST CHIPR 200KOHM +-1% 1/4W FENGHUA 1 R934 061G12062003FT RST CHIPR 200KOHM +-1% 1/4W TZAI YUAN 2nd source R908 061G1206204 JF RST CHIPR 200KOHM +-5% 1/4W FENGHUA 1 R917 061G1206330 JF RST CHIPR 33 OHM +-5% 1/4W FENGHUA 2nd source R917 061G1206330 JT RST CHIP R 33ohm 1/4W +/-5% 1 R913 061G1206519 JT RST CHIPR 5.1 OHM 1/4W TZAI YUAN 1 R931 061G12066804FF RST CHIPR 6.8MOHM 1% 1/4W FENGHUA 1 R932 061G12066804FF RST CHIPR 6.8MOHM 1% 1/4W FENGHUA 1 R933 061G12066804FF RST CHIPR 6.8MOHM 1% 1/4W FENGHUA 1 R900 061G1206684 JT RST CHIPR 680 KOHM 1/4W TZAI YUAN 1 R901 061G1206684 JT RST CHIPR 680 KOHM 1/4W TZAI YUAN 1 R902 061G1206684 JT RST CHIPR 680 KOHM 1/4W TZAI YUAN 1 C610 065G060310131J Y CAP CHIP 0603 100P 50V NPO +/-5% 1 C611 065G060310131J Y CAP CHIP 0603 100P 50V NPO +/-5% 1 C923 065G060310232K T MLCC 0603 CAP 1000PF 50V X7R 2nd source C923 065G060310232K Y CAP CHIP 0603 1N 50V X7R +/-10% 1 C924 065G060310412K W CAP CHIP 0603 0.1UF K 16V X7R 2nd source