AOC E941VA, E941SA service manual Check flow chart

Page 42

Service Manual

AOCe941series

Power Board---

No Power 5V/12V

Check CN901		Check flow chart
100-240V？		For the no power
	NG	Check AC supply
OK		Check AC supply
OK
Check rectified voltage-C907
	NG	checkFuseF901/ rectified device
		checkFuseF901/ rectified device
OK		L902/BD901/C901/C902
OK
Check voltage of IC901-8pin
	NG	check component R904/R932
OK		check component R904/R932
OK
Check T901(1-3)out-Vcc
	NG	Check D901/R909/C903
OK		Check D901/R909/C903
OK
Check IC901-drive out
	NG
OK		Check/replace IC901
Check MOS-Q901pin(G/D)
	NG	Check R910/R938/Q901/T901pri
		Check R910/R938/Q901/T901pri
OK		Around component
OK
Check T901sub rectified out
5V/12V,	NG	Check rectified diode
	NG	D905/D906
		D905/D906
		&fiter capacitor
		Check photo-coupler
		IC902&IC903
		Check-- open load
	42

Image 42

Contents LCD 显示器维修手册 AOC e941VA /e941SA /e941SRevision List Contents TTL LCD SpecificationsProduct Features USB HUBSxga Factory preset modesXGA WxgaOperation instruction Control ButtonsDCR OSD User mode adjustment OSD Lock FunctionInterface description VGA 15pin ConnectorDVI Connector +5VDCUSB+ Audio in port Panel Feature General Specifications Electrical Absolute RatingsElectrical Characteristics AOCe941Series LED Connector Optical SpecificationsBlock Diagram LCD Block DiagramMainBoard Block Diagram 1e941VA---715G3737 IC-PWM MOS 2e941SA---715G3225EMI SETSoftware Flow Chart Software Flow ChartCircuit Schematic Main Board 1---715G3737-M01Detvga DVI-input/DDC Power part---5V/3.3V/1.8V Scarlar---Flash/key Output---LVDS connector Main Board 2---715G3225-1-2 Bladj BlonR101 TO252 AOCe941Series VSC Power Board 715G2892-P02---adapter 12V/5VConverter Board----715G3918-P02 Audio part 715G2892 P02 PhonejackKey Board 715G4007-K01 Explore Views AOCe941Series AOCe941Series PCB Layout MainBoard 1- 715G3737-M01AOCe941series Main Board 2---715G3225-1-2 AOCe941series PowerBoard 715G2892-P02 KeyBoard ---715G4007 Check flow chart For the no power Maintenance Trouble treatmentTrouble Shooting Main Board---No Power Maintainability RequirementCheck flow chart For the no signalCheck flow chart No Backlight of panel Key Board---OSD no working Writing DDC program step AOCe941series AOCe941series BOM List Model：e941VA--T995NTNBWVK2PNJChoke by LI TA Screw AD91603YY1SMTJ Power Board for SMTChoke Coil AC SocketRST Chipr 1KOHM +-1% 1/10W Yageo IC FAN6752MY SOP-8RST Chipr MAX 0R05 1/10W Fenghua RST Chipr 10KOHM +-1% 1/10W YageoIC AS431AZTR-E1 TO-92 AD91603YY1AIJ Power Board for AIEyelet TRA KTD1028 KECLNPCA9361XYY1J Convertor Board Jumper WireRectifier Diode FR107 PIN Header 2.54MM 2PRST Chip 100K 1/10W 5% Tzai Yuan RST Chip 1K 1/10W 5% Tzai YuanRST Chipr 10K OHM +-5% 1/10W Fenghua RST Chipr 1 OHM +-5% 1/10W YageoWafer Connector 9PConn 6PIN RST Mofr 4.7 OHM +-5% 2WS FutabaRST Chipr 100 OHM +-5% 1/16W Fenghua RST Chipr 10 OHM +-5% 1/16W FenghuaRST Chip 10R 1/16W 5% Tzai Yuan RST Chip 100R 1/16W 5% Tzai YuanRST Chipr 10KOHM +-5% 1/16W Fenghua RST Chipr 1KOHM +-5% 1/16W FenghuaRST Chip 1K 1/16W 5% Tzai Yuan RST Chip 10K 1/16W 5% Tzai YuanRST Chip 470R 1/16W 5% Tzai Yuan Tzai YuanRST Chipr 470 OHM 5% 1/16W Fenghua RST Chipr 4.7KOHM +-5% 1/16W FenghuaAOCe941series CAP Chip 4U7 10V X7R Chip BeadRLZ5.6B Dome Switch 5 PCS SMTKEPCAJA9Diode LBAV70LT1G SOT-23 LRC RLZ 5.6B LldsModel：e941SA--T995NSNCWVA1UNJ Screw M3X6 CBPC9NWA1QHJRST Chipr 15KOHM +-1% 1/10W Yageo RST Chipr 1KOHM +-1% 1/8W YageoCN901 006G R906 061G152M10452T XZ RST Chipr SUB 15PIN Vertical Conn with Screw SUB 15PINSOC Subd H 15P F SMTC9NWA1QHJ Main Board for SMTRST Chipr 0 OHM +-5% 1/16W Yageo RST Chip 330R 1/16W 5% Fenghua RST Chipr 1KOHM +-5% 1/16W YageoRST Chipr 10KOHM +-5% 1/16W Yageo RST Chip 390R 1/16W 5% FenghuaRST Chipr 75 OHM +-5% 1/16W Fenghua RST Chipr 56KOHM 1/16W FenghuaRST Chipr 56KOHM 1/16W Tzai Yuan RST Chipr 75OHM +-5% 1/16W YageoAOCe941series OHM Bead X7RX5R BAV70 SOT23 by PAN JITJ44G9909101 Eps J44G9909201 J44G9909615 4A Model：e941S-- T9A2NS2DWVA4QNE PC123Y22FZOF Sharp ADA1603HD1SMT Power Board for SMT LNPCA9401XHD1Main BOARD-CBPCANSA1H1 SMTCA-U402 AC Socket ST-01CP-BCE-RRST Chipr MAX ADA1603HD1AI Power Board for AIRST Chipr 10 Kohm +-1% 1/10W Fenghua RST Chipr 1MOHM +-5% 1/4W Tzai YuanNO-SUGGEST RST Chipr 1KOHM +-5% 1/16W YA NO-SUGGEST RST Chipr MAX 0R05 OHM 1/16WNO-SUGGEST RST Chipr 100 OHM +-5% 1/16W NO-SUGGEST RST Chipr 10KOHM +-5% 1/16W YNO-SUGGEST RST Chipr 330 OHM +-5% 1/16W NO-SUGGEST RST Chipr 75OHM +-5% 1/16W YALED GPTD1210YGC3-HB Chip Bead 120OHM 6A MGLB2012-120T-LFMain Board PCB KEY Board PCBRST Chip 1R 1/10W 5% Tzai Yuan Adapter Board PCBAC/DC Converter TA9690GN-A1-0-TR SOP-24 RST Chip 120K 1/10W 5% Tzai YuanCAP Chip Schottky B3100B 3A 100V SMBConverter Board PCB

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