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AOC E2236VWA, Service Manual

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AOC E2236VWA Service Manual Download Page 6

21.5" LCD Color Monitor                                     AOC e2236Vwa

 

 

6

2. LCD Monitor Description 

 

The LCD monitor will contain a main board, an adapter board, a converter board, an audio board and a key board 
which house the flat panel control logic, brightness control logic and DDC. 
The power part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each 
voltage. 

 

 

 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

HOST Computer 

AC-IN 

100V-240V

 

 

Converter board 

Flat Panel and 

LED backlight

 

Main Board 

RS232 Connector 

For white balance 

adjustment in factory 

mode

 

LED Drive. 

Video signal DDC

Monitor Block Diagram 

Adapter board 

Key board 

USB board*2

Summary of Contents for E2236VWA

Page 1: ...on 10 5 1 Display Characteristics 10 5 2 Optical Characteristics 10 5 3 Parameter guide line for CCFL Inverter 10 6 Block Diagram 11 Table Of Contents 1 Revision List 2 1 Monitor Specification 4 2 LCD...

Page 2: ...haracteristics might create shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from AOC AOC assumes no liability express or...

Page 3: ...n 18 2010 Initial release TI9AA8NB6WA2PNE TI9AA8NQ6WA16NE A01 Mar 23 2010 Add new Model TI9AA8NC6WA25NE A02 Jun 17 2010 Add new Models TI9AA8NC6WA35NE TI9AA8NB6WA2PGE A03 Aug 26 2010 Add new Models 71...

Page 4: ...21 5 LCD Color Monitor AOC e2236Vwa 4 1 Monitor Specification...

Page 5: ...21 5 LCD Color Monitor AOC e2236Vwa 5...

Page 6: ...ntrol logic brightness control logic and DDC The power part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage HOST Computer AC IN 100V 240V C...

Page 7: ...2 Control Buttons Power Press to turn on or turn off the monitor Source 4 3 or wide Up Press key to change the screen aspect ratio between standard 4 3format or Wide format When the input resolution i...

Page 8: ...d press the MENU key to activate it If the function selected has a sub menu press UP or DOWN again to navigate through the sub menu functions Once the desired function is highlighted press MENU key to...

Page 9: ...21 5 LCD Color Monitor AOC e2236Vwa 9...

Page 10: ...21 5 LCD Color Monitor AOC e2236Vwa 10...

Page 11: ...21 5 LCD Color Monitor AOC e2236Vwa 11...

Page 12: ...21 5 LCD Color Monitor AOC e2236Vwa 12 LED Indicator...

Page 13: ...21 5 LCD Color Monitor AOC e2236Vwa 13 4 Input Output Specification 4 1 Input Signal Connector D SUB connector DVI connector...

Page 14: ...21 5 LCD Color Monitor AOC e2236Vwa 14 4 2 Factory Preset Display Modes...

Page 15: ...isplay Characteristics AUO M215HW01 TPV TPM215HW01 The M215H1 L01 model is a 21 5 inch wide TFT LCD module with LED Backlight Unit and a 30 pin 2ch LVDS interface This module supports 1920 x 1080 Full...

Page 16: ...21 5 LCD Color Monitor AOC e2236Vwa 16 5 2 Optical Characteristics AUO M215HW01 Ta 25...

Page 17: ...21 5 LCD Color Monitor AOC e2236Vwa 17 TPV TPM215HW01 5 3 Electrical Characteristics 1 TFT LCD Module AUO M215HW01...

Page 18: ...21 5 LCD Color Monitor AOC e2236Vwa 18 TPV TPM215HW01 Ta 25 2 2 Back Light Unit AUO M215HW01 TPV TPM215HW01 Ta 25 2...

Page 19: ...21 5 LCD Color Monitor AOC e2236Vwa 19 6 Block Diagram 6 1 Software Flow Chart 1 2 N Y 5 Y N 10 Y N 12 Y N 7 Y N 6 4 3 8 9 14 11 13 Y N 15 Y N 16 17 19 Y N 18...

Page 20: ...rn on the LED and set it to green color Scalar initialize 10 In standby mode 11 Update the lifetime of back light 12 Check the analog port are they re any signals coming 13 Does the scalar send out an...

Page 21: ...stal 14 31818MHz X401 Key Control Interface CN402 EEPROM AT24C02BN U101 DDC1_SDA DDC1_SCL EEPROM AT24C02BN U102 DDC2_SDA DDC2_SCL FLASH MEMORY SST25LF020A U402 Scalar TSUMU58EHL LF 1 Include MCU ADC O...

Page 22: ...IC802 12V MOSFET Q801 DIM ENA L801 EMI filter Start Resistor R920 R921 R922 PWM Control IC901 Transformer T901 AC input 14 5V Bridge Rectifier and Filter Feedback Circuit Rectifier diodes Photo couple...

Page 23: ...O2 3 I O3 4 VDD 5 I O4 6 DDC_WP 5 ESD_VCC1 FB110 300 OHM ESD_VCC2 CN102 JACK DAT2 1 DAT2 2 2 4shield 3 DAT4 4 DAT4 5 DDC SCL 6 DDC SDA 7 VSYNC 8 DAT1 9 DAT1 10 1 3shield 11 DAT3 12 DAT3 13 5V 14 SYNC...

Page 24: ...5 U301 NC AO4411 S 1 S 2 S 3 G 4 D 8 D 7 D 6 D 5 C305 100UF25V CMVCC1 PANEL_VCC PANEL_VCC PPWR_ON 5 PB 0 9 5 PA 0 9 5 CMVCC1 PANEL_VCC CMVCC1 2 4 1 2 AO3401L 080912 G 3 D S C303 1uF 25V LVA0P RXE0 R3...

Page 25: ...5 C701 0 1uF 16V R703 10K 1 16W 5 C708 0 1uF 16V C702 0 1uF 16V CN701 CONN 1 2 3 4 5 6 7 8 9 R705 1K 1 16W 5 R704 22K 1 16W 5 C707 100UF25V C709 0 1uF 16V R706 100R 1 16W 5 Q701 2N3904S RTK PS C705 0...

Page 26: ...NC VCC3 3 C407 0 1uF 16V C406 0 1uF 16V C405 0 1uF 16V LED_GRN BLUE C414 0 1uF 16V R415 100R 1 16W 5 PA1 PA0 BUZZER VCC3 3 VPLL LED G_B R417 100R 1 16W 5 VMPLL C408 0 1uF 16V VCC3 3 C417 0 1uF 16V C4...

Page 27: ...7 VSYNC 8 DAT1 9 DAT1 10 1 3shield 11 DAT3 12 DAT3 13 5V 14 SYNC GND 15 HPD 16 DAT0 17 DAT0 18 0 5shield 19 DAT5 20 DAT5 21 clk shield 22 clk 23 clk 24 GND 26 GND 25 R104 1K 1 16W 5 R138 4K7 1 16W 5...

Page 28: ...to 1206 C303 NC C304 NC S D R302 4K7 1 16W 5 3 G LVA0P RXE0 RXEC LVACKP LVBCKM RXOC RXO1 LVB1P LVB2M RXO2 RXOC LVBCKP RXO3 LVB3M RXE2 LVA2M CN303 NC CONN 2 4 6 8 10 12 14 16 18 20 22 24 1 3 5 7 9 11 1...

Page 29: ...OHM 2W NC Both 223 and 252 foot print NC 3 3 OHM 2W U701 223 223 252 Mute BKLT EN D702 NC 3 1 2 DSUB_5V BKLT VBRI BKLT EN CMVCC BKLT VBRI CMVCC R702 10K 1 16W 5 C706 100UF25V C701 0 1uF 16V R703 10K 1...

Page 30: ...PA3 R429 100R 1 16W 5 C415 0 1uF 16V VCC3 3 VCC3 3 1 C404 0 1uF 16V LED_ORANGE KEY2 PB7 R401 390 OHM 1 16W R440 10K 1 16W 5 C434 0 1uF 16V PB9 R412 10K 1 16W 5 VCC3 3 PB5 VMPLL C416 0 1uF 16V R426 NC...

Page 31: ...AC R927 0R05 4A 1 4W HS1 HEAT SINK IC901 1 2 CN902 Wire Harness 1 2 3 4 5 6 7 8 9 C911 2N2 500V C905 100nF 50V C910 2N2 500V C908 47uF 50V C917 100N 50V GND3 GND 1 2 D906 SR504 30 1 2 D902 FR107 GND2...

Page 32: ...N PANEL OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component 1 1 A Tuesday January 05 2010 715G3189PO1LED001S ODM MODEL 04 BUFEER G3189 PO1 LED X 1 09...

Page 33: ...T3904 D601 1N4148 R610 10K 1 10W R611 56K 1 10W C613 100uF 25V OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component 1 1 Custom Tuesday January 05 2010...

Page 34: ...te Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component LNPC98501AHD1 1 A4 Tuesday December 08 2009 715G3823P01000004S ODM MODEL 02 CONVERTER G3823 P01 000 0040 2 091028 R805...

Page 35: ...100K 1 10W R811 10OHM1 10W C802 100uF 50V R814 5 1K 1 8W R815 2 2OHM 1 10W R816 5 1 1 1 10W R807 10K 1 10W C809 10nF 25V C806 10nF 25V Q801 RK7002FD5T116 D G S 12V D801 NC CN801 CONN 1 2 3 4 5 6 7 8 9...

Page 36: ...21 5 LCD Color Monitor AOC e2236Vwa 36 8 PCB Layout 8 1 Main Board 715G3329 1 2...

Page 37: ...21 5 LCD Color Monitor AOC e2236Vwa 37...

Page 38: ...21 5 LCD Color Monitor AOC e2236Vwa 38 715G2883 1 6...

Page 39: ...21 5 LCD Color Monitor AOC e2236Vwa 39 8 2 Power Board Adapter 715G3189P01LED001S...

Page 40: ...21 5 LCD Color Monitor AOC e2236Vwa 40 715G3189P02LED001S...

Page 41: ...21 5 LCD Color Monitor AOC e2236Vwa 41 Converter 715G3823P01000004S...

Page 42: ...21 5 LCD Color Monitor AOC e2236Vwa 42 715G3649P01000004S...

Page 43: ...21 5 LCD Color Monitor AOC e2236Vwa 43 8 3 Key Board 715G3371 2 8 4 USB Board 715G2663 2 715G3501 2...

Page 44: ...C e2236Vwa 44 9 Maintainability 9 1 Equipments and Tools Requirement 1 Multi meter 2 Oscilloscope 3 Pattern Generator 4 DDC Tool with an Compatible Computer 5 Alignment Tool 6 LCD Color Analyzer 7 Ser...

Page 45: ...Press power key and look if the picture is normal Please reinsert and make sure the AC of 100 240V is normal Measure U701 Vout 3 3V U703 Vout 1 8V Reinsert or check the power section X401 oscillate w...

Page 46: ...Measure U701 Vout 3 3V U703 Vout 1 8V Replace CN701 U701 U703 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally I...

Page 47: ...asure Q302 base is low level X401 oscillate waveform is normal Check FB301 Q301 is broken or CN301 solder Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK R...

Page 48: ...and make sure the AC of 100 240V is normal Measure U701 Vout 3 3V C704 1 8V Reinsert or check the power section X401 oscillate waveforms are normal Check U701 C704 CN701 Replace U401 Replace X401 OK...

Page 49: ...NG NG Measure U701 Vout 3 3V C704 1 8V Check U701 C704 CN701 X401 oscillate waveforms are normal Replace X401 Check if the sync signal from computer is output and video cable is connected normally Inp...

Page 50: ...Measure Q302 base is low level X401 oscillate waveform is normal Check U301 is broken or CN301 solder Check Correspondent component Replace PANEL Check Correspondent component Replace U401 OK OK Repl...

Page 51: ...Check AC line volt 110V or 240V Check AC input Check the voltage of C907 Check bridge rectified circuit and F901 circuit Check start voltage for the pin2 of IC901 Check R920 R921 R922 Change IC901 NG...

Page 52: ...P01000004S Check C802 12V NG OK Check adapter and MB Check ON OFF signal Check main board NG OK Check Q801 PIN5 6 7 8 12V NG OK Change Q801 Check IC801 PIN1 2 3 4 5 6 7 8 have the output of square wav...

Page 53: ...OK Change coverter and MB Check ON OFF signal Check main board NG OK Check U801 pin15 12V NG OK Change Q802 Check the pin3 of U801 have saw tooth wave NG Change U801 Check U801 Pin7 8 9 10 have the o...

Page 54: ...54 9 2 3 Key Board OK OK OSD is unstable or not working Is Keypad board connecting normally Is Button Switch normally Is Keypad board normally Check main board Connect Keypad board Replace Button Swit...

Page 55: ...LCD Color Monitor AOC e2236Vwa 55 10 Firmware and DDC Instruction ISP DDC writing SOP Please land ftp cs tpv com cn to load relevant writing SOP in the related files Accounts TPVSQZ Code TPVZGDLSQZ200...

Page 56: ...ightness to 90 5 Gain adjustment A Adjust Warm 6500K color temperature 1 Switch the chroma 7120 to RGB Mode with press MODE button 2 Switch the MEM channel to Channel 3 with up or down arrow on chroma...

Page 57: ...B 100 7 Repeat above procedure item 4 5 6 until chroma 7120 RGB value meet the tolerance 100 2 D Adjust sRGB color temperature 1 Switch the chroma 7120 to RGB Mode with press MODE button 2 Swit ch th...

Page 58: ...21 5 LCD Color Monitor AOC e2236Vwa 58 12 Monitor Exploded View...

Page 59: ...PIN P0 5MM 370MM E09508 095G8014 5XH09 HARNESS 5P PLUG 5P 2501 200MM E09503 095G8014 7T588 HARNESS 7P PLUG 6P C2003 260MM 0D1G1730 8120 SCREW 0M1G 130 6120 SCREW M3X6 705GH934025 21 5 LCD STAND BASE A...

Page 60: ...5 KINGNICHI C907A 067G 40Z10115L EC 100uF 450V M 18 36mm C912 067G215D6814LV LOW ESR EC 680uF 25V M 10 20mm C914 067G215S4713LV LOW ESR EC 470uF 16V M 10 12 5mm L901 073G 174 65 H2 LINE FILTER 30mH MI...

Page 61: ...HM 5 1 10W FENGHUA R610 061G0603103 JF RST CHIPR 10K OHM 5 1 10W FENGHUA R613 061G0603103 JF RST CHIPR 10K OHM 5 1 10W FENGHUA R614 061G0603103 JF RST CHIPR 10K OHM 5 1 10W FENGHUA R602 061G0603103 JT...

Page 62: ...5 100N 50V X7R 10 C917 065G080510432K Y CAP CHIP 0805 100N 50V X7R 10 C609 065G080510522K T CAP CHIP 0805 1UF K 25V X7R C608 065G080522522K T CAP CHIP 0805 2 2UF K 25V X7R C901 065G080582031J F CAP CH...

Page 63: ...16W R117 061G0402101 RST CHIPR 100 OHM 5 1 16W R115 061G0402101 RST CHIPR 100 OHM 5 1 16W R114 061G0402101 RST CHIPR 100 OHM 5 1 16W R113 061G0402101 RST CHIPR 100 OHM 5 1 16W R111 061G0402101 RST CHI...

Page 64: ...00PF 10 50V X7R C413 065G040210412K A CAP CHIP 0402 100nF K 16V X7R C414 065G040210412K A CAP CHIP 0402 100nF K 16V X7R C415 065G040210412K A CAP CHIP 0402 100nF K 16V X7R C416 065G040210412K A CAP CH...

Page 65: ...K 25V X7R C402 065G0805475 A5 0805 4 7UF 10 10V X5R FB301 071G 56K121 M CHIP BEAD FB410 071G 56V301 B CHIP BEAD FCM2012VF 301T07 bullwill FB404 071G 56V301 B CHIP BEAD FCM2012VF 301T07 bullwill FB402...

Page 66: ...061G0603105 JT RST CHIP 1M 1 10W 5 TZAI YUAN R840 061G0603109 JT RST CHIP 1R 1 10W 5 TZAI YUAN R841 061G0603109 JT RST CHIP 1R 1 10W 5 TZAI YUAN R826 061G0603109 JT RST CHIP 1R 1 10W 5 TZAI YUAN R827...

Page 67: ...BOARD PCB CN901 006G 31500 EYELET IC903 056G 158 10 T IC AS431AZTR E1 TO 92 Q901 057G 530503 T 2SD1207T R919 061G152M10452T SY RST MOFR 100KOHM 5 2WS FUTABA R918 061G152M25152T SY RST MOFR 250 OHM 5...

Page 68: ...90 23 JUMPER WIRE J614 095G 90 23 JUMPER WIRE J600 095G 90 23 JUMPER WIRE J906 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J904 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J902 095G 90 2...

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