AOC E941SA, E941VA service manual LCD Block Diagram, MainBoard Block Diagram 1e941VA---715G3737

Page 13

Service Manual

AOCe941Series

5.Block Diagram

5.1 LCD Block Diagram

Monitor Block Diagram

 

 

 

 

 

 

LED-bar backlight

 

 

 

Panel

USB

 

 

 

LVDS

Speaker

 

 

 

Memory

 

 

 

 

3W×2

 

 

 

 

 

DC-AC inverter

 

Main Board

 

Audio

 

 

 

AC-DC(5V/12V)

 

 

USB

Amplifiers

 

 

 

 

 

HUB

 

Power Board

 

 

 

 

 

 

Audio in

 

Key board

PC- VGA

PC- DVI

 

AC supply

/DDC

/DDC

 

 

 

USB cable

 

90V-264V

 

 

 

 

 

From PC

 

 

 

 

 

 

 

Input signal

5.2 MainBoard Block Diagram

 

 

 

(1)e941VA---715G3737

 

 

 

 

Crystal 12MHz

 

Panel Interface

 

(X401)

 

(CN408/409)

EEPROM

Scalar NT68668FG-QFG-128

(Include ADC, OSD, MCU)

PM25LD020C

 

(U401)

 

(U402)

 

 

 

 

 

5V 3.3V 1.8V

 

 

H sync

 

 

 

 

 

 

V sync

Voltage converter

Key Board

D-Sub

DVI

Control

Connector

Connector

 

(CN401/402)

(CN101)

(CN102)

5V

 

 

 

 

13

 

 

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Contents AOC e941VA /e941SA /e941S LCD 显示器维修手册Revision List Contents Product Features LCD SpecificationsTTL USB HUBXGA Factory preset modesSxga WxgaControl Buttons Operation instructionDCR OSD Lock Function OSD User mode adjustmentDVI Connector VGA 15pin ConnectorInterface description +5VDCUSB+ Audio in port General Specifications Electrical Absolute Ratings Panel FeatureElectrical Characteristics AOCe941Series Optical Specifications LED ConnectorLCD Block Diagram Block DiagramMainBoard Block Diagram 1e941VA---715G3737 EMI 2e941SA---715G3225IC-PWM MOS SETSoftware Flow Chart Software Flow ChartMain Board 1---715G3737-M01 Circuit SchematicDetvga DVI-input/DDC Power part---5V/3.3V/1.8V Scarlar---Flash/key Output---LVDS connector Bladj Blon Main Board 2---715G3225-1-2R101 TO252 AOCe941Series VSC 715G2892-P02---adapter 12V/5V Power BoardConverter Board----715G3918-P02 Phonejack Audio part 715G2892 P02Key Board 715G4007-K01 Explore Views AOCe941Series AOCe941Series MainBoard 1- 715G3737-M01 PCB LayoutAOCe941series Main Board 2---715G3225-1-2 AOCe941series PowerBoard 715G2892-P02 KeyBoard ---715G4007 Trouble Shooting Main Board---No Power Maintenance Trouble treatmentCheck flow chart For the no power Maintainability RequirementFor the no signal Check flow chartCheck flow chart No Backlight of panel Key Board---OSD no working Writing DDC program step AOCe941series AOCe941series Model：e941VA--T995NTNBWVK2PNJ BOM ListChoke Coil Screw AD91603YY1SMTJ Power Board for SMTChoke by LI TA AC SocketRST Chipr MAX 0R05 1/10W Fenghua IC FAN6752MY SOP-8RST Chipr 1KOHM +-1% 1/10W Yageo RST Chipr 10KOHM +-1% 1/10W YageoEyelet AD91603YY1AIJ Power Board for AIIC AS431AZTR-E1 TO-92 TRA KTD1028 KECRectifier Diode FR107 Jumper WireLNPCA9361XYY1J Convertor Board PIN Header 2.54MM 2PRST Chipr 10K OHM +-5% 1/10W Fenghua RST Chip 1K 1/10W 5% Tzai YuanRST Chip 100K 1/10W 5% Tzai Yuan RST Chipr 1 OHM +-5% 1/10W YageoConn 6PIN Connector 9PWafer RST Mofr 4.7 OHM +-5% 2WS FutabaRST Chip 10R 1/16W 5% Tzai Yuan RST Chipr 10 OHM +-5% 1/16W FenghuaRST Chipr 100 OHM +-5% 1/16W Fenghua RST Chip 100R 1/16W 5% Tzai YuanRST Chip 1K 1/16W 5% Tzai Yuan RST Chipr 1KOHM +-5% 1/16W FenghuaRST Chipr 10KOHM +-5% 1/16W Fenghua RST Chip 10K 1/16W 5% Tzai YuanRST Chipr 470 OHM 5% 1/16W Fenghua Tzai YuanRST Chip 470R 1/16W 5% Tzai Yuan RST Chipr 4.7KOHM +-5% 1/16W FenghuaAOCe941series Chip Bead CAP Chip 4U7 10V X7RDiode LBAV70LT1G SOT-23 LRC Dome Switch 5 PCS SMTKEPCAJA9RLZ5.6B RLZ 5.6B LldsModel：e941SA--T995NSNCWVA1UNJ CBPC9NWA1QHJ Screw M3X6RST Chipr 1KOHM +-1% 1/8W Yageo RST Chipr 15KOHM +-1% 1/10W YageoCN901 006G R906 061G152M10452T XZ RST Chipr SOC Subd H 15P F SUB 15PINSUB 15PIN Vertical Conn with Screw SMTC9NWA1QHJ Main Board for SMTRST Chipr 0 OHM +-5% 1/16W Yageo RST Chipr 10KOHM +-5% 1/16W Yageo RST Chipr 1KOHM +-5% 1/16W YageoRST Chip 330R 1/16W 5% Fenghua RST Chip 390R 1/16W 5% FenghuaRST Chipr 56KOHM 1/16W Tzai Yuan RST Chipr 56KOHM 1/16W FenghuaRST Chipr 75 OHM +-5% 1/16W Fenghua RST Chipr 75OHM +-5% 1/16W YageoAOCe941series X5R X7ROHM Bead BAV70 SOT23 by PAN JITJ44G9909101 Eps J44G9909201 J44G9909615 4A Model：e941S-- T9A2NS2DWVA4QNE Main BOARD-CBPCANSA1H1 SMTCA-U402 ADA1603HD1SMT Power Board for SMT LNPCA9401XHD1PC123Y22FZOF Sharp AC Socket ST-01CP-BCE-RRST Chipr 10 Kohm +-1% 1/10W Fenghua ADA1603HD1AI Power Board for AIRST Chipr MAX RST Chipr 1MOHM +-5% 1/4W Tzai YuanNO-SUGGEST RST Chipr 100 OHM +-5% 1/16W NO-SUGGEST RST Chipr MAX 0R05 OHM 1/16WNO-SUGGEST RST Chipr 1KOHM +-5% 1/16W YA NO-SUGGEST RST Chipr 10KOHM +-5% 1/16W YNO-SUGGEST RST Chipr 75OHM +-5% 1/16W YA NO-SUGGEST RST Chipr 330 OHM +-5% 1/16WMain Board PCB Chip Bead 120OHM 6A MGLB2012-120T-LFLED GPTD1210YGC3-HB KEY Board PCBAC/DC Converter TA9690GN-A1-0-TR SOP-24 Adapter Board PCBRST Chip 1R 1/10W 5% Tzai Yuan RST Chip 120K 1/10W 5% Tzai YuanSchottky B3100B 3A 100V SMB CAP ChipConverter Board PCB
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