AOC E941VA, E941SA service manual 2e941SA---715G3225, Emi, Ic-Pwm Mos, Set

Page 14

Service Manual

 

AOCe941Series

(2)e941SA---715G3225

 

 

 

Crystal 12MHz

Panel Interface

 

(X401)

(CN403/405)

 

 

EEPROM

Scalar NT68168FG

(Include ADC, OSD, MCU)

PM25LD020C

 

(U401)

(U402)

 

 

 

5V 3.3V 1.8V

 

H sync

 

 

 

 

V sync

Voltage converter

Key Board

D-Sub

Control

Connector

 

(CN401/402)

(CN101)

5V

 

 

5.3 Power Board Block Diagram

 

 

 

Power/ Converter Board Block Diagram

 

 

Fuse

EMI

Rectifier

Smoothing

Transformer

12V

12V

 

 

 

 

Capacitor

T901

Rectifier

12V

AC input

 

 

 

 

 

 

 

100-240V

 

 

 

 

 

5V

5V

 

 

 

 

 

 

 

 

 

IC-PWM

MOS

Rectifier

 

 

 

Vcc

 

 

 

 

IC901

 

 

 

 

Switching

 

 

 

 

 

 

 

 

 

 

 

CN902-12V

 

 

 

Vcc

 

 

 

 

 

 

Rectifier

 

 

 

 

 

 

 

 

Audio in

Amplifier

 

 

Sense

 

 

 

 

 

 

 

resistor

 

 

 

 

 

 

 

photocoupler

regulating

 

 

 

 

 

 

sampling

 

 

 

 

 

 

 

 

Power adapter Part

 

 

 

 

 

12V

 

 

 

 

Converter

 

 

 

 

 

 

 

Vout30V

 

 

CN801

SET

PWM Control

Switching MOS

CN803

 

IC801

Q801-AO4828

 

 

 

 

 

 

 

 

 

 

TA9690

 

 

 

On/off

DIM

 

 

 

Current Sense

 

 

LED converter Part

 

 

1-8

 

 

 

 

 

 

14

 

 

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Contents LCD 显示器维修手册 AOC e941VA /e941SA /e941SRevision List Contents TTL LCD SpecificationsProduct Features USB HUBSxga Factory preset modesXGA WxgaDCR Operation instructionControl Buttons OSD User mode adjustment OSD Lock FunctionInterface description VGA 15pin ConnectorDVI Connector +5VDCUSB+ Audio in port Electrical Characteristics Panel FeatureGeneral Specifications Electrical Absolute Ratings AOCe941Series LED Connector Optical SpecificationsMainBoard Block Diagram 1e941VA---715G3737 Block DiagramLCD Block Diagram 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 YuanConverter Board PCB CAP ChipSchottky B3100B 3A 100V SMB
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