Check flow chart | AOC E941SA, E941VA, E941SERIES specification

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

AOC E941SA, E941VA, E941SERIES service manual Check flow chart

Contents

LCD 显示器维修手册 AOC e941VA /e941SA /e941S Revision List Contents TTL LCD SpecificationsProduct Features USB HUB Sxga Factory preset modesXGA Wxga Operation instruction Control ButtonsDCR OSD User mode adjustment OSD Lock Function Interface description VGA 15pin ConnectorDVI Connector +5VDC USB+ Audio in port Panel Feature General Specifications Electrical Absolute RatingsElectrical Characteristics AOCe941Series LED Connector Optical Specifications Block Diagram LCD Block DiagramMainBoard Block Diagram 1e941VA---715G3737 IC-PWM MOS 2e941SA---715G3225EMI SET Software Flow Chart Software Flow Chart Circuit Schematic Main Board 1---715G3737-M01 Detvga DVI-input/DDC Power part---5V/3.3V/1.8V Scarlar---Flash/key Output---LVDS connector Main Board 2---715G3225-1-2 Bladj Blon R101 TO252 AOCe941Series VSC Power Board 715G2892-P02---adapter 12V/5V Converter Board----715G3918-P02 Audio part 715G2892 P02 Phonejack Key Board 715G4007-K01 Explore Views AOCe941Series AOCe941Series PCB Layout MainBoard 1- 715G3737-M01 AOCe941series 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 Requirement Check flow chart For the no signal Check flow chart No Backlight of panel Key Board---OSD no working Writing DDC program step AOCe941series AOCe941series BOM List Model：e941VA--T995NTNBWVK2PNJ Choke by LI TA Screw AD91603YY1SMTJ Power Board for SMTChoke Coil AC Socket RST Chipr 1KOHM +-1% 1/10W Yageo IC FAN6752MY SOP-8RST Chipr MAX 0R05 1/10W Fenghua RST Chipr 10KOHM +-1% 1/10W Yageo IC AS431AZTR-E1 TO-92 AD91603YY1AIJ Power Board for AIEyelet TRA KTD1028 KEC LNPCA9361XYY1J Convertor Board Jumper WireRectifier Diode FR107 PIN Header 2.54MM 2P RST 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 Yageo Wafer Connector 9PConn 6PIN RST Mofr 4.7 OHM +-5% 2WS Futaba RST 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 Yuan RST 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 Yuan RST Chip 470R 1/16W 5% Tzai Yuan Tzai YuanRST Chipr 470 OHM 5% 1/16W Fenghua RST Chipr 4.7KOHM +-5% 1/16W Fenghua AOCe941series CAP Chip 4U7 10V X7R Chip Bead RLZ5.6B Dome Switch 5 PCS SMTKEPCAJA9Diode LBAV70LT1G SOT-23 LRC RLZ 5.6B Llds Model：e941SA--T995NSNCWVA1UNJ Screw M3X6 CBPC9NWA1QHJ RST Chipr 15KOHM +-1% 1/10W Yageo RST Chipr 1KOHM +-1% 1/8W Yageo CN901 006G R906 061G152M10452T XZ RST Chipr SUB 15PIN Vertical Conn with Screw SUB 15PINSOC Subd H 15P F SMTC9NWA1QHJ Main Board for SMT RST 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% Fenghua RST 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 Yageo AOCe941series OHM Bead X7RX5R BAV70 SOT23 by PAN JIT J44G9909101 Eps J44G9909201 J44G9909615 4A Model：e941S-- T9A2NS2DWVA4QNE PC123Y22FZOF Sharp ADA1603HD1SMT Power Board for SMT LNPCA9401XHD1Main BOARD-CBPCANSA1H1 SMTCA-U402 AC Socket ST-01CP-BCE-R RST Chipr MAX ADA1603HD1AI Power Board for AIRST Chipr 10 Kohm +-1% 1/10W Fenghua RST Chipr 1MOHM +-5% 1/4W Tzai Yuan NO-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 Y NO-SUGGEST RST Chipr 330 OHM +-5% 1/16W NO-SUGGEST RST Chipr 75OHM +-5% 1/16W YA LED GPTD1210YGC3-HB Chip Bead 120OHM 6A MGLB2012-120T-LFMain Board PCB KEY Board PCB RST 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 Yuan CAP Chip Schottky B3100B 3A 100V SMBConverter Board PCB