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Summary of Contents for AOC i2252VW
- Page 1 Service Manual AOCi2252VW LCD 显示器维修手册 Custom： Model： i2252VW 本手册适用于主板为 715G4502，Scalar IC NT68660 This manual applies to mainboard 715G4502，Scalar IC NT68660...
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Page 2: Revision List
Service Manual AOCi2252VW REVISION LIST Revision Editor Model Version Release Date TPV Model No History Jun-28-2011 Initial Release AOCi2252VW TIBGN22YAYA1HNJ TPV-BJ-Rainsun... -
Page 3: Table Of Contents
Service Manual AOCi2252VW CONTENTS 1. LCD Specifications ........................... 4 1.1 Product Features ..........................4 1.2 Factory preset modes ........................5 1.3 New Features ............................. 5 1.4 VGA 15pin Connector ........................6 1.5 DVI Connector ........................... 6 2. Operation instruction ..........................7 2.1 Connection ............................ -
Page 4: Lcd Specifications
Service Manual AOCi2252VW 1. LCD Specifications 1.1 Product Features Monitor Model AOC i2252VW Driving system TFT Color LCD Active Display Area 476.64mm (W)×268.11mm(H) 546.86mm diagonal LCD Panel Pixel Pitch 0.24825 mm×0.24825mm R,G,B Analog Interface，75ohm,0.7V Video DVI digital Interface Input Separate Sync. -
Page 5: Factory Preset Modes
Service Manual AOCi2252VW 1.2 Factory preset modes HORIZONTAL VERTICAL STANDARD RESOLUTION FREQUENCY FREQUENCY 640×480 31.469kHz 59.94Hz 35.00kHz 66.67Hz 640×480 37.861kHz 72.80Hz 640×480 640 × 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 AOCi2252VW 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 1.5 DVI Connector Pin No. -
Page 7: Operation Instruction
Service Manual AOCi2252VW 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. ... -
Page 8: Osd User Mode Adjustment
Service Manual AOCi2252VW 2.3 OSD User mode adjustment a) OSD Menu adjustment steps: +/ - 1. Press MENU to activate OSD main menu, Touch button may select other Menu item.. +/ - 2. Press MENU button to select items of each main menu.Touch to move and select. - Page 9 Service Manual AOCi2252VW...
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- Page 11 Service Manual AOCi2252VW b) hotkey OSD Menu as shown below AUTO Source selection Screen switching Clear vision mode...
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Page 12: Osd Locked
Service Manual AOCi2252VW 2.4 OSD Locked When press “ ” to switched on the monitor, while holding press the” menu” button, the menu will be locked. Again, the OSD menu is non-locked. -
Page 13: Panel Feature
Service Manual AOCi2252VW 3. Panel Feature LM215WF3 is a Color Active Matrix Liquid Crystal Display with a Light Emitting Diode ( White LED) backlight system without LED driver. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally black mode. -
Page 14: Electrical Characteristics
Service Manual AOCi2252VW 3.3 Electrical Characteristics LED array ELECTRICAL CHARACTERISTICS 3.4 TFT LCD Module Block Diagram... -
Page 15: Lcd Module Input Terminal Pin Assignment
Service Manual AOCi2252VW 3.5 LCD module input terminal pin assignment 3.6 LED connector Interface LED connector pin configuration CI1406M1HRB-NH on Backlight Unit... -
Page 16: Block Diagram
Service Manual AOCi2252VW 4.Block Diagram 4.1 LCD Block Diagram Monitor Block Diagram LED-bar backlight Panel LVDS Converter Main Board 715G4502 AC-DC(5V/12V) Power Board PC- VGA PC- DVI Key board /DDC /DDC AC supply 90V-264V Input signal 4.2 MainBoard Block Diagram Crystal Panel Interface 14.318MHz... -
Page 17: Power Board Block Diagram
Service Manual AOCi2252VW 4.3 Power Board Block Diagram MMD 21.5" LIPS Block Diagram AC Input Input Filter Bridge Rectification EMI Filter Condenser 2A 800V Rectifier Diode 5V Output Flyback (1)10A/60V Transformer (2)10A/200V 16V Output Adapter IC Power MOS LD7750RGR 8A/700V Feedback Circuit LED Light bar BOOST... -
Page 18: Software Flow Chart
Service Manual AOCi2252VW 4.4 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 19: Circuit Schematic
Service Manual AOCi2252VW 5. Circuit Schematic 5.1 Main Board 715G4502M01 04.SCALER 02.INPUT VCC3.3 VCC3.3 SOG_DET VCC1.8 SOG_DET SOG_DET VCC1.8 05.PANEL INTERFACE EDID_WP AHS0 EDID_WP AHS0 AHS0 AVS0 AVS0 AVS0 PA[0..9] DDCSDA1 DDCSDA1 DDCSDA1 PA[0..9] PA[0..9] DDCSCL1 DDCSCL1 DDCSCL1 VGA_CABLE_DET VGA_CABLE_DET VGA_CABLE_DET PB[0..9] 02.D-SUB INPUT... - Page 20 Service Manual AOCi2252VW...
- Page 21 Service Manual AOCi2252VW Input part---VGA/DDC CN101 DET_VGA R102 100R 1/16W 5% VGA_CABLE_DET VGA_CABLE_DET 5 D-SUB 15P VGA_5V DDCSCL1 R101 DDCSCL_A DDCSCL1 100R 1/16W 5% VGA_5V VSIN0 BIN0- HSIN0 BIN0 R103 R104 R105 C102 GIN0- ZD101 BIN0 0R05 1/16W 0R05 1/16W 100R 1/16W 5% 47N16V B0+ 5...
- Page 22 Service Manual AOCi2252VW DVI input CN102 R127 DVI_CABLE_DET 5 JACK 100R 1/16W 5% DVI5V 3,5,7 VSY NC DET_DVI DVI5V SY NC GND SCL_DVI R128 100R 1/16W 5% D102 DDC SCL SDA_DVI R129 100R 1/16W 5% ESD_DVI BAV70 DDC SDA DVI5V R130 1K 1/16W 5% U104...
- Page 23 Service Manual AOCi2252VW Power part---5V/3.3V/1.8V VCC3.3 CN702 U701 AZ1117H-3.3TRG1 FB701 0 OHM +-5% 1/8W 3,4,5 VCC3.3 5 INPUT OUTPUT VCC3.3 ADJ/GND ON/OFF NC/CONN C701 R702 4K7 1/16W 5% 100N 16V +5V 3,4,5 CN701 R703 100R 1/16W 5% Adj_BACKLIGHT 5 C706 U702 VCC3.3 100N 16V...
- Page 24 Service Manual AOCi2252VW VCC1.8 VCC1.8 7 U401 NT68660FG FB401 and FB402 is PB[0..9] R402 NC/2K2 1/16W 5% PB[0..9] FB401 NC==>3.3V use TO252 type LVB3P R403 NC/2K2 1/16W 5% CVDD 300OHM LVB3M U401 NT68660UFG FB402 is NC==>3.3V LVBCKP LVBCKM VCC3.3 and 1.8V LDO use SOT-223 type LVB2P C401 C402...
- Page 25 Service Manual AOCi2252VW Output---LVDS connector PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P CN408 LVA3P LVB3M CONN LVA3M LVBCKP LVB0M RXO0- LVACKP LVBCKM LVB0P RXO0+ LVACKM LVB2P LVB1M RXO1- LVA2P LVB2M LVB1P RXO1+ LVA2M LVB1P LVB2M RXO2- LVA1P LVB1M LVB2P RXO2+ LVA1M LVB0P LVA0P LVB0M LVBCKM...
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Page 26: Power Board 715G4750-P02
Service Manual AOCi2252VW 5.2 Power Board 715G4750-P02 --adapter 16V/5V 4 7 O HM 1/4 W R9 01 C901 C924 BD901 D2SB80 R90 2 4 7 O HM 1/4 W 2N2 500V 2N2 500V FB901 R93 7 NC Coil T901 L902 POWER X'FMR BEAD R90 3... -
Page 27: Converter Board 715G4013-P02
Service Manual AOCi2252VW 5.3 Converter Board 715G4013-P02 CN805 D801 L801 CN801 +14.5V 22uH Q806 F801 APM8005K 3A/100V CONN C809 0R05 4A 1/4W 100uF 50V R801 R805 C807 C803 ON/OFF 300K +-1% 1/8W U801 33UF 100V 470N 25V 10 OHM 1% 1/4W MP3389EF R839 Q801... -
Page 28: Key Board 715G4851K
Service Manual AOCi2252VW 5.4 Key Board 715G4851k ZD002 LED001 MLVS0603M04 ZD003 SGND MLVS0603M04 CN001 LBADC1 R001 2KOHM 1% 1/10W LBADC2 DC_POWERON R002 0R01 1/10W LED_1# LED_2# C001 C002 R003 2KOHM 1% 1/10W 0.1uF 50V 0.1uF 50V JR001 0 OHM +-5% 1/8W R004 CONN 1K 1/10W... -
Page 29: Monitor Exploded View
Service Manual AOCi2252VW 6. Monitor exploded view... -
Page 30: Pcb Layout
Service Manual AOCi2252VW 7. PCB Layout 7.1 MainBoard 715G4502... - Page 31 Service Manual AOCi2252VW...
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Page 32: Powerboard 715G4750-P02
Service Manual AOCi2252VW 7.2 PowerBoard 715G4750-P02... -
Page 33: Converter Board 1-715G4013P02
Service Manual AOCi2252VW 7.3 Converter Board 1-715G4013P02... -
Page 34: Keyboard715G4851
Service Manual AOCi2252VW 7.4 KeyBoard715G4851... -
Page 35: Maintenance
Service Manual AOCi2252VW 8. Maintenance 8.1 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 8.2 Disassembly SOP appropriate tools Phillips screwdriver spacer screwdriver C/D Disassembly Tool Gloves or soft cloth Prepare soft cloth and sponge... - Page 36 Service Manual AOCi2252VW Disassembly SOP 按下，分离支架 Separation Stand 后壳 Rear 拆卸螺钉×4 Remove screws...
- Page 37 Service Manual AOCi2252VW...
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Page 38: Trouble Shooting
Service Manual AOCi2252VW 8.3 Trouble Shooting Main Board--- No Power No power Check flow chart For the no power Press power key and look if the picture is normal Please reinsert and make sure the AC 100-240V is normal ? Reinsert or check the power section Check 5V-CN404, 3.3V-U404-2;... - Page 39 Service Manual AOCi2252VW No picture (LED orange) No picture Check flow chart for the no signal Check signal wire Replace signal wire Check U404 Vout=3.3V; Q409-out=1.8V replaceU404,Q409,Q410,Q405 &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 40 Service Manual AOCi2252VW 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 D901/R909/C903 Check IC901-drive out Check/replace IC901 Check MOS-Q901pin(G/D) Check R910/R938/Q901/T901pri...
- Page 41 Service Manual AOCi2252VW No Backlight of panel Check flow chart for the Check voltage of F801-12V？ Inverter No Backlight Open F801, voltage-12V Return check Power Check ON/OFFsignal After Power off,check Check main board C801/C802？Q824? Check IC801 -12pin=12V pinRT waveform? After Power off,check Q805/Q808/R804/C825 Check IC801-6pin RT waveform? Check aroud component...
- Page 42 Service Manual AOCi2252VW 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...
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Page 43: Software Update Step
Service Manual AOCi2252VW 8.4 Software update step Product information 756GJBCB AA025 MCU ASS'Y main board CBPCAN2A1J1 U402 056G2233501 FLASH MX25L2026DM1I-12G 2Mb SOP-8 SMTCA-U402 100GANGI000B11 AOC_i2252Vwe_Nt68660_LGD_LM215WF3-SLC1 U401 056G 562369 SCALER NT68660UFG/B TQFP-100 Step1：Connection 1. Connect one end of the USB line cable to the PC, the other to connect the ISP tool（715GT089-B ） ； 2. - Page 44 Service Manual AOCi2252VW...
- Page 45 Service Manual AOCi2252VW Step3:Run 1.To Run TOOL : In the "Start" – ”program "in the writer icon, , as shown , “ “ 2.Click “Option” FE2P Mode Enable” TOOL 默认为 √”, withhold HDCP KEY, select “setup ISP tool”,---“FTDI”,”Confirm Change”,The figuer is as follows...
- Page 46 Service Manual AOCi2252VW...
- Page 47 Service Manual AOCi2252VW Click “Option”，select WP pin, The figuer is as follows...
- Page 48 Service Manual AOCi2252VW 4.click “ISP ON”, The figuer is as shown,OK ; 5.Click “ ”, “Load File” Find software file, The figuer is as follows...
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Page 49: Re-Writing Ddc Program Step
Service Manual AOCi2252VW 6.Click“Auto”, Start Programming, until the successful ;The figuer is as follows 8.5 Re-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 (12V)for figure below 2. - Page 50 Service Manual AOCi2252VW...
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Page 52: Factory Mode Adjustment
Service Manual AOCi2252VW 8.6 Factory mode adjustment After replacing the Main board and the Panel, Check for enter the Factory mode ,then re-writing DDC is necessary. Step: In normal display mode, unplug the power cord to shut down。Then Press “MENU” button and hold, At the same time plug the power cord to turned on the Power , Then, click the menu button,the monitor will may enter Factory OSD Menu. - Page 53 Service Manual AOCi2252VW...
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Page 54: Bom List
Service Manual AOCi2252VW 9.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. 9.1 Model：TIBGN22YAYA1HNJ Location Part number Description Remark 040G 581689 4A BARCODE LABEL FOR 1 Conductive Tape 85mm *40mm *0.09mm (单导) 052G... - Page 55 Service Manual AOCi2252VW C927 067G215S3316KV EC 330uF M 35V 10*12mm C907 067G215S3316LV EC 330uF 35V M 10*12.5mm 2nd source C908 067G215S3316LV EC 330uF 35V M 10*12.5mm 2nd source C927 067G215S3316LV EC 330uF 35V M 10*12.5mm 2nd source L901 073G 174192 H LINE FILTER 30MH MIN LCL-12012 HA L901 073G 174192 X...
- Page 56 Service Manual AOCi2252VW R920 061G0805221 JI RST CHIPR 220 OHM +-5% 1/8W 0805 R920 061G0805221 JT RST CHIP 220R 1/8W 5% TZAI YUAN 2nd source R926 061G08054701FF RST CHIPR 4.7KOHM +-1% 1/8W FENGHUA R926 061G08054701FT RST CHIP 4K7 1/8W 1% 2nd source R933 061G0805511 JF...
- Page 57 Service Manual AOCi2252VW C929 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% 2nd source C926 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% 2nd source C923 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% 2nd source C917 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C912 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10%...
- Page 58 Service Manual AOCi2252VW J909 095G 90 23 JUMPER WIRE J908 095G 90 23 JUMPER WIRE J907 095G 90 23 JUMPER WIRE J917 095G 90 23 JUMPER WIRE J914 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J906 095G 90 23 JUMPER WIRE J910...
- Page 59 Service Manual AOCi2252VW R842 061G0805000 JT RST 0805 0.05R MAX 1/8W R841 061G0805000 JT RST 0805 0.05R MAX 1/8W R815 061G08051001FT RST CHIP 1K 1/8W 1% R811 061G08051001FT RST CHIP 1K 1/8W 1% R815 061G08051001FY RST CHIP 1K 1/8W 1% 2nd source R811 061G08051001FY...
- Page 60 Service Manual AOCi2252VW CBPCAN2A1J1 CONVERSION G4502-M01-000-0040-1-110212 CN402 033G3802 6B Y CONN 6PIN 2.0 2nd source CN402 033G3802 6B Y WAFER CN701 033G3802 9B Y CONNECTOR 9P 2.0 2nd source CN701 033G3802 9B Y CONN 2.0 9P CN408 033G801930F CH FFC CONN 1.0mm 30P R/A 34mm 6mm CN408 033G801930F CH JS FFC CONN 1.0mm 30P R/A 34mm 6.3mm...
- Page 61 Service Manual AOCi2252VW R453 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R410 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R110 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R109 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R104 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R103...
- Page 62 Service Manual AOCi2252VW R125 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN R116 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R133 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R454 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R701 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN...
- Page 63 Service Manual AOCi2252VW C115 065G040210412K CAP 0402 100NF 10% 16V X7R C117 065G040210412K CAP 0402 100NF 10% 16V X7R C118 065G040210412K CAP 0402 100NF 10% 16V X7R C119 065G040210412K CAP 0402 100NF 10% 16V X7R C402 065G040210412K CAP 0402 100NF 10% 16V X7R C403 065G040210412K CAP 0402 100NF 10% 16V X7R...
- Page 64 Service Manual AOCi2252VW FB408 071G 56V301 B CHIP BEAD 0805 300R 25% 700mA 2nd source FB408 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB405 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB404 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB401 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA...
- Page 65 Service Manual AOCi2252VW R003 061G06032001FF RST CHIP 2KOHM 1% 1/10W FENGHUA R001 061G06032001FF RST CHIP 2KOHM 1% 1/10W FENGHUA JR001 061G0805000 JT RST 0805 0.05R MAX 1/8W ZD001 093G 64 59 SU ESD MLVS0603M04 0603 ZD002 093G 64 59 SU ESD MLVS0603M04 0603 ZD003 093G 64 59 SU...