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Summary of Contents for AOC n941S/plus
- Page 1 Service Manual AOCn941Splus LCD 显示器维修手册 English version Brand： Model： n941S/plus 编制editor TPV-BJ-朱雨生 2011-11-24 审核 review TPV-BJ-常焕华 2011-11-24...
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Page 2: Revision List
Service Manual AOCn941Splus REVISION LIST Model Version Release Date Revision History TPV Model No T99ANSNYWVA1NNJ Nov-24-2011 Initial Release AOCn941S/plus T9BENSNYWVA1NNJ T9BANSNDWVA1NNE... -
Page 3: Table Of Contents
Service Manual AOCn941Splus CONTENTS 1. LCD Specifications ..........................4 1.1 Product Features ....................4 1.2 Factory preset modes .................... 5 1.3 Introduction of new feature ..................5 1.4 VGA 15pin Connector .................... 6 2. Operation instruction ..........................7 2.1 Connection ...................... -
Page 4: Lcd Specifications
Service Manual AOCn941Splus 1. LCD Specifications 1.1 Product Features Monitor Model AOC n941S/plus Driving system TFT Color LCD 481mm（19inch） diagpnal Active Display Area 408.24mm (W)×255.15mm(H) LCD Panel Pixel Pitch 0.2835 mm×0.2835mm Display Colors 16.7M Colors Max. Resolution 1440 x 900@75Hz R,G,B Analog Interface，75ohm,0.7V... -
Page 5: Factory Preset Modes
Service Manual AOCn941Splus 1.2 Factory preset modes HORIZONTAL VERTICAL STANDARD RESOLUTION FREQUENCY FREQUENCY 31.469kHz 59.94Hz 640×480 35.00kHz 66.66Hz 640×480 37.861kHz 72.80Hz 640×350 640 × 480 37.50kHz 75.00Hz 640 × 480 31.469kHz 70.087Hz DOS-mode 720 × 400 31.469kHz 70.087Hz Mac-mode 832 ×624 49.725kHz 74.50Hz 800 ×... -
Page 6: Vga 15Pin Connector
Service Manual AOCn941Splus 1.4 VGA 15pin Connector Pin No. Description Pin No. Description Red Input +5VDC Green Input Logic GND Blue Input SDA- DDC-Serial Data Connection detect H Sync Red GND V Sync Green GND SCL- DDC-Serial Clock Blue GND VGA Connector layout... -
Page 7: Operation Instruction
Service Manual AOCn941Splus 2. Operation instruction 2.1 Connection Connect the video cable from the video card of PC to the monitor. The power cord should be connected. Press the power button to turn on the monitor, the power indicator will light up. 2.2 Control Buttons Control Description... -
Page 8: Osd User Mode Adjustment
Service Manual AOCn941Splus 2.3 OSD User mode adjustment Hot key ┼ ─ AUTO Menu+Power OSD Lock Function Press “menu” and hold,with turn on “Power”, the OSD menu is locked. Again, the OSD menu is non-locked. For the OSD menu function ,Please refer to “user manual” . ... - Page 9 Service Manual AOCn941Splus...
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Page 10: Panel Feature
Service Manual AOCn941Splus 3. Panel Feature This specification applies to the 19 inch-wide Color TFT-LCD Module M190PW01. The display supports the WXGA+ (1440(H) x 900(V)) screen format and 16.7M colors(RGB 6-bits+HiFRC). All input signals are 2-Channel LVDS interface compatible. This module does not contain an inverter board for backlight. -
Page 11: Tft Lcd Module Block Diagram
Service Manual AOCn941Splus ) for backlight lamp (2CCFL) 3.4 TFT LCD Module Block Diagram... -
Page 12: Lcd Module Input Terminal Pin Assignment
Service Manual AOCn941Splus 3.5 LCD module input terminal pin assignment 3.6 Optical Specifications... -
Page 13: Disassembly Sop
Service Manual AOCn941Splus 4. Disassembly SOP 4.1 appropriate tools Phillips screwdriver spacer screwdriver C/D Disassembly Tool Gloves or soft cloth Prepare soft cloth and sponge as working platform... -
Page 14: Disassembly Sop
Service Manual AOCn941Splus 4.2 Disassembly SOP Remove screw×1... - Page 15 Service Manual AOCn941Splus Remove bezel Bezel for n941s/plus Remove screw×4 connector×3 Remove buttons...
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Page 18: Block Diagram
Service Manual AOCn941Splus 5.Block Diagram 5.1 LCD Block Diagram Monitor Block Diagram 2CCFL backlight Panel LVDS DC-AC inverter Main Board AC-DC(5V/12V) Power Board PC- VGA /DDC Key board AC supply 90V-264V Input signal 5.2 MainBoard Block Diagram n941S---715G3225 Crystal 12MHz Panel Interface (CN403/405) (X401) -
Page 19: Power Board Block Diagram
Service Manual AOCn941Splus 5.3 Power Board Block Diagram - G2892-1-V0C Fuse Smoothing Transformer Rectifier Capacitor T901 BD901 Rectifier C905 AC input 100-240V Rectifier IC-PWM IC901 Q901 Rectifier Sense Power part resistor regulating PhotoCoupler Sampling 16V DC Switching MOS DC-AC Resonance NET AO4620*2 High Voltage Transformer... -
Page 20: Software Flow Chart
Service Manual AOCn941Splus 5.4 Software Flow Chart Start Software Flow Chart Initial_MCU To Write default values Check if DataBuffer Is blank Check if Sum is changed ? Brightness Contrast Read parameter_from Buffer Language InputType InputTimingStableCounter OsdCounter Init_GlobalVariables PowerDownCounter Initial_MCU Device while PowerHandler if standby mode? -
Page 21: Circuit Schematic
Service Manual AOCn941Splus 6. Circuit Schematic 6.1 Main Board 1-715G3225-1 2.INPUT 3.SCALER 4.PANEL INTERFACE DSUB_5V BIN+ PANEL_EN BIN+ BIN+ PANEL_EN PANEL_EN BIN- BIN- BIN- SOGI DSUB_5V SOGI SOGI GIN+ GIN+ GIN+ GIN- GIN- GIN- RIN+ TCLK1P RIN+ RIN+ TCLK1P TCLK1P RIN- TCLK1M RIN-... - Page 22 Service Manual AOCn941Splus Input part---VGA/DDC R101 0402->0603 FB102 VGA_B+ R104 C101 BIN+ 5 H_Sy nc R101 0R05 1/10W R102 100OHM1/16W BEAD 100R 1/16W 5% 0.047uF HSIN 5 V_Sy nc R103 100OHM1/16W R107 C117 VSIN 5 75R 1/16W 5% C102 R106 C103 VGA_B- R108...
- Page 23 Service Manual AOCn941Splus Power part---5V/3.3V/1.8V U701 AME8815BEGT330Z VOUT(heat sink) TO252 5VCC CN404 U702 4,5,6 5VCC NC/AME8810-AEGTZ 0.6A/3.3V VOUT(heat sink) 5VCC 5 VCC3.3 BKLT-VBRI BKLT-EN C_PANEL_INDEX Volume VCC3.3 5 Mute R701 C711 C701 SOT223 NC/10K 1/16W 5% 0.1UF 16V CONN C702 C703 100uF25V 0.1UF 16V...
- Page 24 0R05 1/16W 4K7 1/16W 5% LEDO Q408 2N3906S-RTK/PS LED_ORANGE R469 680OHM +-5% 1/10W CN407 CN408 FB410 NC/BEAD Add FB410 for AOC FB409 project VCC3.3 NC/CONN NC/CONN TOUCH_PANEL NC/BEAD T P V ( Top Victory Electronics Co . , Ltd. )
- Page 25 Service Manual AOCn941Splus Output---LVDS connector CN403 CN405 PANEL_VCC TCLK1M TCLK1P TCLK1P TCLK1P TCLK1M TCLK1M TCLK1M TCLK1P CONN TCLK1P TCLK1M PANEL_VCC R433 10K 1/16W 5% Q403 NC/AO4411 AO3401L Q405 R436 100K 1/16W 5% AO3401A R418 C419 0.22uF16V R435 22K 1/16W 5% Q404 PANEL_EN 2N3904S-RTK/PS...
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Page 26: Power Board 715G2892-7
Service Manual AOCn941Splus 6.2 Power Board 715G2892-7 ---adapter 14V/5V R929 100 OHM 1/4W BD901 C916 F801 KBP208G R930 100 OHM 1/4W 0.001uF 0R05 1/4W 5% +14.5V R903 100 OHM 1/4W R904 ZD901 100OHM 2W MTZJ T-72 16B D901 C918 NC/470UF/25V NC/SR5150 R905 D902... -
Page 27: Inverter Part
Service Manual AOCn941Splus 6.3 Inverter part---- F801 +14.5V 0 OHM 1/4W R801 C802 1000uF25V 2.43K OHM 1% 1/10W CN801A CONN Q802 Q801 Q804 PDTA144WK SST2222A T801 PDTC144WK POWER X'FMR CN801 CONN ON/OFF Q803 +14.5V R803 C803A C803 NC Q805 C818 R802 10NF/50V 10R 1/10W 5%... -
Page 28: Key Board 715G4007-K01
Service Manual AOCn941Splus 6.4 Key Board 715G4007-K01... -
Page 29: Explore Views
Service Manual AOCn941Splus 7.Explore Views... -
Page 30: Pcb Layout
Service Manual AOCn941Splus 8. PCB Layout 8.1 MainBoard -- 715G3225-1... - Page 31 Service Manual AOCn941Splus...
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Page 32: Powerboard 715G2892-7
Service Manual AOCn941Splus 8.2 PowerBoard 715G2892-7... -
Page 33: Keyboard
Service Manual AOCn941Splus 8.3 KeyBoard ---715G4007... -
Page 34: Maintenance Trouble Treatment
Service Manual AOCn941Splus 9. Maintenance Trouble treatment 9.1 Maintainability Requirement Voltmeter. & digital multimeter Oscilloscope. Pattern Generator. DDC Tool with Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual. repair tools etc 9.2 Trouble Shooting Main Board--- No Power No power Check flow chart For the no power... - Page 35 Service Manual AOCn941Splus No picture (LED orange) No picture Check flow chart for the no signal Check signal wire Replace signal wire Check U701 Vout=3.3V; U704-out=1.8V replaceU701,U704,&around device check X401 waveform replace X401 Check CN101-RGB/HS/VS Check Correspondent component Check U402/U403 out Updata soft data Replace U401 Whitescreen...
- Page 36 Service Manual AOCn941Splus Power Board--- No Power 5V/12V Check flow chart Check CN901 100-240V？ For the no power Check AC supply Check rectified voltage-C907 checkFuseF901/ rectified device L902/BD901/C901/C902 Check voltage of IC901-8pin check component R904/R932 Check T901(1-3)out-Vcc Check D904/R913/C913 Check IC901-drive out Check/replace IC901 Check MOS-Q901pin(G/D) Check R910/R938/Q901/T901pri...
- Page 37 Service Manual AOCn941Splus No Backlight of panel Check flow chart for the Check voltage of C804-14V？ Inverter No Backlight Open J812, voltage-14V Return check Power Check ON/OFFsignal After Power off,check Check main board C811/C804？Q805/Q806? Check IC801 -11pin=5V pinRT waveform? After Power off,check ZD802/ZD803/R804/C825 Check IC801-3pin CT waveform? Check aroud component...
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Page 38: Software Programming Step
Service Manual AOCn941Splus Key Board--- OSD no working Check flow chart OSD is unstable or not For the key board working Connect Key Pad Board Is Key Pad Board connecting normally? Is Button Switch normally? Replace Button Switch Is Key Pad Board normally? Replace Key Pad Board Check Main Board 9.3 Software programming step... - Page 39 Service Manual AOCn941Splus Step 2：Setup ISP Tool(NOVATEK Tool) ---Driver Installation 1. Install print port driver 2. The set up of the writing program:Novatek tool: 3. After extracting, double-click the icon to install the system driver ntport24.zip, Step 3.Run 1. Double-click Icon 2.From “Start”-“program”,Run tools Novatek EasyWriter V4.5,...
- Page 40 Service Manual AOCn941Splus 2.IC NT68168 only supports VGA interface does not support DVI, for “FE2P Mode Enable “,Do not need to tick; For a DVI or HDMI, must be checked in order to protect the HDCP code. 3.Click “Option”---“Setup ISP tool”, The figure appears.( The system will automatically identify types of tools)
- Page 41 Service Manual AOCn941Splus Selection according to the figure,click “Confirm Change”, Close the settings. 4.Click ”Option---WP Pin select”,...
- Page 42 Service Manual AOCn941Splus 5.Click “Load File”,Open Specific path and software:...
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Page 43: Writing Ddc Program Step
Service Manual AOCn941Splus 6.Click “Auto”, Start writing software,Programing Success, The figures appears: 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 (715GT034+12V)for figure below 2. - Page 44 Service Manual AOCn941Splus...
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Page 45: Factory Mode Adjustment
Service Manual AOCn941Splus 9.5 Factory mode adjustment After replacing the Main board and the Panel, Check for enter the Factory mode ,then re-writing DDC is necessary. Step: Press MENU button and hold,reinsert the Power cord , then ,press MENU , the monitor will may enter Factory OSD Menu. - Page 46 Service Manual AOCn941Splus Turn off the AC power, Reboot,enter User OSD Menu,Reset. Exit, Complete the update.
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Page 47: Bom List
Service Manual AOCn941Splus 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：T99ANSNYWVA1NNJ Location Part number Description Remark 040G 58160811A GREEN DOT LABEL 040G 58162461A EPA LABEL 040G 581689 4A... - Page 48 Service Manual AOCn941Splus U402 056G1133 90 1 IC PM25LV020-100SCE 2MB SOIC-8 PMC 2nd source U402 056G2233 11 IC Pm25LD020C-SCE SIOC-8(150mil) 2M Q408 057G 417517 Tra LMBT3906LT1G -200mA/-40V SOT-23 LRC 2nd source Q407 057G 417517 Tra LMBT3906LT1G -200mA/-40V SOT-23 LRC 2nd source Q404 057G 417518 TRA LMBT3904LT1G 200mA/40V SOT-23 LRC...
- Page 49 Service Manual AOCn941Splus R103 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO R104 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO R108 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO R110 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO R111 061G0402101 JY RST CHIPR 100 OHM +-5% 1/16W YAGEO...
- Page 50 Service Manual AOCn941Splus R466 061G0402331 JF RST 0402 330R 5% 1/16W 2nd source R466 061G0402331 JY RST CHIPR 330 OHM +-5% 1/16W YAGEO R109 061G0402391 JF RST CHIP 390R 1/16W 5% FENGHUA 2nd source R109 061G0402391 JT RST CHIP 390R 1/16W 5% TZAI YUAN R407 061G0402392 JF RST CHIPR 3.9KOHM +-5% 1/16W FENGHUA...
- Page 51 Service Manual AOCn941Splus C413 065G040210412K CAP 0402 0.1UF 10% 16V X7R C414 065G040210412K CAP 0402 0.1UF 10% 16V X7R C401 065G040210412K CAP 0402 100NF 10% 16V X7R 2nd source C406 065G040210412K CAP 0402 100NF 10% 16V X7R 2nd source C407 065G040210412K CAP 0402 100NF 10% 16V X7R 2nd source...
- Page 52 Service Manual AOCn941Splus C116 065G060322422K CAP CHIP0603 220NF K 25V X7R C116 065G060322422K CAP 0603 220N 25V X7R 10% 2nd source C439 065G060322515K CAP 0603 2.2UF 10% 16V X5R C443 065G0805475A2K CAP CHIP 0805 4.7uF K 10V X7R C442 065G0805475A2K CAP CHIP 0805 4.7uF K 10V X7R C430 065G0805475A2K...
- Page 53 Service Manual AOCn941Splus U902 056G 139 10 IC TLP781F photocoupler DIP-4 2nd source U902 056G 139 3A PC123Y22FZOF SHARP NR901 061G 58120MEN RST NTCR 12OHM +-20% 4A NR901 061G 58120MEX RST NTCR 12OHM +/-20% 4A XINGSHUN 2nd source C908 063G 10747410V NO-SUGGEST 0.47UF 275VAC ARCO 2nd source C908...
- Page 54 Service Manual AOCn941Splus 0M1G 930 6120 SCREW 3x6 705GJB57021 Q901 ASS'Y 051G 200 1 OIL FOR DISAPPEAR Q901 057G 667 52 FET 2SK4100LS-T 7A/650V TO-220FI(LS) 2nd source Q901 057G 667 56 MOSFET 7A/650V FMA07N65GX TO-220F Q901 057G 724 11 MOSFET STP9NK65ZFP 6.4A 650V TO-220FP 2nd source 090G6064 1 HEAT SINK...
- Page 55 Service Manual AOCn941Splus R802 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO 2nd source R928 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO 2nd source R920 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO 2nd source R907 061G06031001FY RST CHIPR 1KOHM +-1% 1/10W YAGEO 2nd source R807 061G06031002FT...
- Page 56 Service Manual AOCn941Splus R834 061G06034702FT RST CHIP 47K 1/10W 1% 2nd source R905 061G0603471 JT RST CHIPR 470OHM +-5% 1/10W TZAI YUAN R905 061G0603471 JY RST CHIPR 470 OHM 5% 1/10W YAGEO 2nd source R821 061G0603474 JF RST CHIPR 470KOHM +-5% 1/10W FENGHUA R819 061G0603474 JF RST CHIPR 470KOHM +-5% 1/10W FENGHUA...
- Page 57 Service Manual AOCn941Splus R908 061G1206103 JT RST CHIPR 10KOHM +-5% 1/4W TZAI YUAN 2nd source R923 061G1206221 JI RST 1206 220R 5% 1/4W R923 061G1206221 JT RST CHIPR 220 OHM +-5% 1/4W TZAI YUAN 2nd source R816 061G1206303 JF RST CHIPR 30KOHM +-5% 1/4W FENGHUA 2nd source R816 061G1206303 JI...
- Page 58 Service Manual AOCn941Splus C927 065G080547332K CAP CHIP 0805 47nF K 50V X7R 2nd source C927 065G080547332K CAP CHIP 0805 47NF K 50V X7R C927 065G080547332K CAP CHIP 0805 47N 50V X7R +/-10% 2nd source C809 065G080568131G CAP CHIP 0805 680PF 50V G NPO C917 065G120610272K CAP 1206 1NF 10% 500V X7R...
- Page 59 Service Manual AOCn941Splus J811 095G 90 23 JUMPER WIRE J901 095G 90 23 JUMPER WIRE J902 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J904 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J906 095G 90 23 JUMPER WIRE J907...
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