AOC 2236swa Service Manual

21.5" lcd monitor
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21.5" LCD Monitor
Service
Service
Service
Table of Contents....................................................1
Revision List...................................................................2
Important Safety Notice.................................................3
1.Monitor Specification...................................................4
2.LCD Monitor Description.........................................5
3.Operation Instruction.................................................7
3.1.General Instructions..................................................7
3.2.Control Buttons and Connections...............................7
3.3.OSD Settings............................................................8
4.Input/Output Specification.......................................27
4.1.Input Signal Connector.........................................27
4.2.Factory Preset Display Modes...............................27
4.3.Panel Specification...........................................28
5.Block Diagram.........................................................30
5.1.Main Board.....................................................30
5.2.Power Board..................................................31
6.Schematic..........................................................32
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Table of Contents

Page Description
6.1.Main Board.......................................................32
6.2.Power Board....................................................36
7.PCB Layout.........................................................38
7.1.Main Board.....................................................38
7.2.Power Board.....................................................40
7.3.Key Board........................................................42
7.4.USB Board.......................................................43
8.Maintainability.....................................................44
8.2.Trouble Shooting.............................................45
9. FOS Testing.............................................49
10.Firmware and DDC Instruction.......................53
12.Monitor Exploded View......................................67
13.BOM List......................................................68
SAFETY NOTICE
1
AOC 2236Swa
Horizontal Frequency
30- 80kHz
Page

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Summary of Contents for AOC 2236swa

  • Page 1: Table Of Contents

    21.5" LCD Monitor AOC 2236Swa Service Service Service Horizontal Frequency 30- 80kHz Table of Contents Description Page Description Page Table of Contents…………………..…………………..…...1 6.1.Main Board..…….…...........32 Revision List.…...........……..2 6.2.Power Board..……….........36 Important Safety Notice.….…......……..3 7.PCB Layout..………..........38 1.Monitor Specification......………....4 7.1.Main Board………..…........38 2.LCD Monitor Description……….……………………..5 7.2.Power Board….…..........40...
  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name TIAASPNE6WA1UNE Dec.-07-2010 Initial release TIAASPNB6WA1UNE...
  • Page 3: Important Safety Notice

    Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
  • Page 4: Monitor Specification

    1. Monitor Specifications model name 2236Swa Driving system TFT Color LCD Viewable Image Size 547mm diagonal Pixel pitch 0.248mm(H) x 0.248mm(V) LCD Panel Video R, G, B Analog lnterface & Digital Interface Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock 148.5 MHz...
  • Page 5: Lcd Monitor Description

    2. LCD Monitor Description The LCD MONITOR will contain a main board, a power board, two USB boards and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
  • Page 6 View and Dimension...
  • Page 7: Operation Instruction

    3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. The power cord should be connected.
  • Page 8: Osd Settings

    4.Turn on your monitor and computer. If your monitor displays an image, installation is complete. If it does not display an image, see Troubleshooting. 3.3 OSD Settings Eco mode ---DCR, Standard, Text, Internet, Game, Movie, Sports...
  • Page 9 Standard Text Internet...
  • Page 10 Game Movie Sports Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as “On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted.
  • Page 11 Color Boost --- Full Enhance, Nature Skin, Sky-Blue, Green Field, Auto Detect, Demo, Off, Exit Full Enhance Nature Skin Sky-Blue...
  • Page 12 Green Field Auto Detect Demo...
  • Page 13 Exit Notes : Full Enhance: Total color saturation is enhanced, suitable for vivid pictures. Natural Skin: Suitable for human portrait. Green Field: Suitable for large area of green. Sky Blue: Suitable for sky or ocean scene. Auto Detect: Suitable for outdoor or garden. Demo: Screen divided into two for comparison purpose.
  • Page 14 Luminance ---Brightness,Contrast, Gamma Brightness Contrast Gamma...
  • Page 15 Exit Notes : When Eco mode is not set as “Standard”, Contrast and Brightness can not be adjusted; When DCR is set as “On”, Contrast, Brightness, Eco mode and Gamma can not be adjusted. Image Setup --- Clock, Phase, H.Position, V.Position, Exit Clock Phase...
  • Page 16 H.Position V.Position Exit Notes : When the input source is digital signal like DVI or HDMI, Image Setup can not be adjusted.
  • Page 17 Color Temperature ---User-R , User-G , User-B, Normal, Warm, Cool, sRGB, Exit User-R User-G User-B...
  • Page 18 Normal Warm Cool...
  • Page 19 sRGB Exit Notes : One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
  • Page 20 Picture Boost --- V.Position, H.Position, Contrast, Brightness, Frame Size, Bright Frame, Exit V.Position H.Position Contrast...
  • Page 21 Brightness Frame Size Bright Frame...
  • Page 22 Exit Notes : One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly. Extra ---Language, Reset, DDC-CI,OSD Timeout, Transparency, V. Position, H. Position, Off Timer, Exit Language...
  • Page 23 Reset DDC-CI OSD Timeout...
  • Page 24 Transparency V. Position H. Position...
  • Page 25 Off Timer Exit...
  • Page 26 Exit LED Indicator...
  • Page 27: Input/Output Specification

    4. Input/Output Specification 4.1 Input Signal Connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Video-Red Video-Green Ground Video-Blue N.C. N.C. DDC-Serial data Detect Cable H-sync GND-R V-sync GND-G DDC-Serial clock GND-B 4.2 Factory Preset Display Modes HORIZONTAL VERTICAL STAND RESOLUTION FREQUENCY(kHZ) FREQUENCY(Hz) 640×480 @60Hz...
  • Page 28: Panel Specification

    4.3 Panel Specification 4.3.1 General Features The M215HW01 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 HD (16:9 wide screen) mode and displays up to 16.7 millions colors.
  • Page 29 2 .BackLight Unit (Ta= 25±2℃) 4.3.4 Optical Characteristics (Ta= 25±2℃, Ha =50±10 %RH, VCC =5.0 V)
  • Page 30: Block Diagram

    T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size OTS R-series G3244-I-X-X-8-090108 TPV MODEL AOC 2036S 絬 隔 瓜 絪 腹 Key Component 01.Top PCB NAME 715G3244-I <称爹> 称 爹 Thursday , January 08, 2009 Sheet...
  • Page 31: Power Board

    5.2 Power Board 715G2824 2 11 AC input Bridge Transformer Rectifier EMI filter Rectifier diodes (T901) and Filter Start Resistor (R908 ) Feedback Power Switch PWM Control Circuit (Q901) LD7576 (IC901) Photo coupler Regulator (IC902) (IC903) Output Transformer MOSFET (PT801) (Q805, Q806) Circuit Lamp...
  • Page 32: Schematic

    Victory Electronics Co . , Ltd. ) OEM MODEL Size OTS R-series C434 0.22uF G3244-I-X-X-8-090108 TPV MODEL 絬 隔 瓜 絪 腹 AOC 2036S Key Component 02.Input PCB NAME 715G3244-I <称爹> 称 爹 Thursday , January 08, 2009 Sheet Date...
  • Page 33 LVA2P DSUB_SOG SOGIN0 LVA2M U402 DSUB_B+ BIN0P LVA1P DSUB_B- BIN0M LVA1M VCC1.8 DSUB_H HSY NC0 LVA0P 010A Befor AOC ID2007 OSD DSUB_V VSY NC0 LVA0M DDC1_SDA DDCA_SDA/RS232_TX VCC1.8 PA[4..9] DDC1_SCL PA[4..9] DDCA_SCL/rs232_RX 020A For ID2008 ID2009 C406 C407 0.1uF/16V 0.1uF/16V U402 PB[0..9]...
  • Page 34 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size OTS R-series G3244-I-X-X-8-090108 TPV MODEL 絬 隔 瓜 絪 腹 AOC 2036S Key Component 04.Output PCB NAME 715G3244-I <称爹> 称 爹 Sunday , May 31, 2009 Sheet Date...
  • Page 35 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL OTS R-series Size G3244-I-X-X-8-090108 TPV MODEL 絬 隔 瓜 絪 腹 AOC 2036S Key Component 05.Power PCB NAME 715G3244-I <称爹> 称 爹 Date Sunday , May 31, 2009 Sheet...
  • Page 36: Power Board

    6.2 Power Board 715G2892 5 4 R929 100 OHM 1/4W BD901 C916 L905 KBP208G R930 100 OHM 1/4W 0.001uF Coil +16V R903 100 OHM 1/4W ZD9 0 1 C918 Q904 TZX18B 1000uF25V KTD1028 D901 FMX-12SL R905 0R05 1/10W 5% R906 100K OMH 2W +-5% R904 C911...
  • Page 37 R817 +16V 2R2 1/8W 5% Q805 ZD802 ON/OFF RLZ5.6B ZD803 RLZ5.6B R816 2R2 1/8W 5% R802 +5Vi R803 R804 PT801 CN801 AO4620 5K1 1/8W 5% 5K1 1/8W 5% POWER X'FMR C819 CONN 22R 1/8W 5% 68pF3KV C803 C815 0.1uF 0.1uF Q806 C802 R819 2R2 1/8W 5%...
  • Page 38: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G3244 2...
  • Page 40: Power Board

    7.2 Power Board 715G2892 5 4...
  • Page 42: Key Board

    7.3 Key Board 715G3371 2...
  • Page 43: Usb Board

    7.3 USB Board 715G2663 2 715G3501 2...
  • Page 44: Maintainability

    8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.
  • Page 45: Trouble Shooting

    8.2 Trouble Shooting 1. No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicate is OK? Replace the converter board Replace main board and check connections Replace key board and check connections...
  • Page 46 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the converter The end board Replace the main The end board and connection Replace the LVDS/FFC Check the LVDS/FFC cable or panel cable or panel Replace the key board...
  • Page 47 3. DIM DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode Pull out signal cable and Check the signal cable check “Self Test Feature and the PC...
  • Page 48 4. Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable and check the screen color display is normal? Replace the signal cable or PC Replace the main board...
  • Page 49: Fos Testing

    9. FOS Testing 9.1 Brightness Measurement Max. Brightness >240 cd/㎡(typ). Test conditions: - Center of display - Video input (RGB) = 0,700V for Analog Input - Brightness control is set to max - Contrast control is set to max. Min. brightness measurement: <...
  • Page 50 1.1920 x 1080 (60 Hz), 2. Black pattern or White Half line pattern 1.1920 x 1080 (60 Hz), 2. Black pattern, Red H-Line pattern, Green pattern or Blue pattern. 1.1920 x 1080 (60 Hz), 2. Black pattern or White V-Line pattern 1.1920 x 1080 (60 Hz), 2.
  • Page 51 Abnormal 1.1920 x 1080 (60 Hz), display 2. Gray scale pattern 1.1920 x 1080 (60 Hz), Gray defect 2. Gray scale pattern 1.1920 x 1080 (60 Hz), Video noise 2. Gray scale pattern 1.1920 x 1080 (60 Hz), Color tint 2.
  • Page 52 1.1920 x 1080 (60 Hz), Light 2. Black pattern or White leakage pattern 1.1920 x 1080 (60 Hz), Fuzzy 2. Pane picture video...
  • Page 53: Firmware And Ddc Instruction

    10. Firmware and DDC Instruction 10.1Firmware Instruction(TSUM IC ISP for exemple :TSUM1PFL-LF ) Step 1:connect system: 1. LPT cable connect PC and ISP board ; 2. VGA cable connect monitor and ISP board ; 3. Monitor AC power on ; 4.
  • Page 54 2. Choose CONFIG icon ,interface as below : Setting as : Port type :LPT1 Speed :50KHZ 3. Choose DEVICE,and choice WP Pin pull to high during ISP :...
  • Page 55 4. Choose CONNECT icon ,and interface show Device type ******: 5. Press the read icon ,and load the monitor’s CODE of MCU。 Then,the interface should show “checksum” of the CODE。...
  • Page 56 Then ,as below : 6. Show the interface as follows after press the AUTO button 7. Then , press Run icon :...
  • Page 57 8. It’s successfully if interface show PASS. And the monitor should enter BURN IN mode .Monitor will auto change display pattern such as :red /green/blue Step4:CHECK CODE : You should check the program code is right in factory mode ;(about the method of enter factory mode ,pls reference the service manual ) Step 5.
  • Page 58: Ddc Instruction

    10.2 DDC Instruction Tool list: 1. DDC board:715GT034-B 2. Software (WA.DAT&WD.DAT&*. CONFIG.INI) 3. LPT driver software 4. LPT cable, D-SUB CABLE ,DVI CABLE and DVI to HDMI CABLE 5. 12V( Adapter) 6. TPVDDCHDMI and TPVDDC6.0 7. PC Tool picture For VGA&DVI BURNING: DDC Board as the follow picture: TO PC LPT DC 12V power LCD DVI port...
  • Page 59 VGA&DVI Burning: 1.Double-click the icon “ ” to install Port95nt print driver, and then restart the computer. Double-click select “Analog and DVI” show as follow picture 2. Click “Load file” and select as follow picture.then click “LCDDDC” EX: DDCModelName:CHIMEI96VS...
  • Page 60 3. Click “ok” show as follow picture. 4.Input same SN twice and date. Click “Pragram” to burn. When appear “pass” as follow picture that burning is successful. 5. Click “program”, Note:1. Appear fault as follow , please input SN twice and burning again.
  • Page 61 Note:2. When appear “pass” as follow picture that burning is successful.
  • Page 62 Note3:Click “Read both” show as follow picuture..If read SN and model name are same as before inputing as before that burning is successful. Note4:Appear fault as follow, please check the connection of LPT cable , Tool adapter cable and LCD power.
  • Page 63 Note5:Appear fault as follow,please check the connection of VGA and the connection of DVI...
  • Page 64 Note6: If the burn software is unsuccessfulll, appear fault: 1. For VGA,the resolution will be not the best achieve. 2. For DVI,No picture,no sound. If program failed, in VGA mode, you can’t use the optimal resolution. When Read is OK, program is NG, pls do take following action: 1.
  • Page 65: White-Balance,Luminance Adjustment

    11. White- Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. How to setting MEM channel you can reference to chroma 7120 user guide or simple use “SC” key and “NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust .
  • Page 66 C. Adjust Cool (9300K) color-temperature 1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 283 ±30, y = 297 ±30, Y =170 cd/m2 4.
  • Page 67: Monitor Exploded View

    12. Monitor Exploded View...
  • Page 68: Bom List

    Q45G 76 28 H PE BAG FOR MANUAL Q45G 76 28V13 PE BAG Q50G 4 10 TIE (Y1900221) Q52G 1185 99 big carton tape for aoc Q52G6019 14 TAPE E08907 S95G179T30NE15 FFC CABLE 30PIN P1.0MM 206MM 705GH934025 21.5"LCD STAND-BASE ASS'Y 0Q1G1740 12120...
  • Page 69 H40G 22N61525B ID LABEL H40G 58161579B CARTON LABEL H41G780961529A AP WARRANTY booklist 808G2236SWAPHI 2236SWA Philippines ASS'Y E08904 089G 173 56 4B AUDIO CABLE E08905 089G 175 8A C USB CABLE 1800MM without PE bag E08905 089G 175 8A G...
  • Page 70 709G3244 HM002 CONSUMPTIVE ASS'Y C410 067G 2151007RT 105C 10UF M 50V C423 067G 3051014KT EC 100uF 25V PF 6.3x11mm C426 067G 3051014KT EC 100uF 25V PF 6.3x11mm C427 067G 3051014KT EC 100uF 25V PF 6.3x11mm C421 067G 3051014KT EC 100uF 25V PF 6.3x11mm 709G3244 HA002 CONSUMPTIVE ASS'Y U401...
  • Page 71 R408 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R407 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R118 061G0402103 RST CHIPR 10 KOHM +-5% 1/16W R436 061G0402104 RST CHIPR 100 KOHM +-5% 1/16W R468 061G0402201 RST CHIP 200R 1/16W 5% R105 061G0402222 RST CHIPR 2.2 KOHM +-5% 1/16W R106...
  • Page 72 C104 065G0402509 31 CHIP 5pF 50V NPO C108 065G0402509 31 CHIP 5pF 50V NPO C111 065G0402509 31 CHIP 5pF 50V NPO FB405 071G 56G151 A CHIP BEAD 150 OHM FB402 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB401 071G 56V301 B CHIP BEAD 0805 300OHM BULLWILL FB101 071G 59K190 M...
  • Page 73 C900 065G306M3322BP Y1 CAP 3300PF M 250VAC C925 067G215S1023LV LOW ESR EC 1000uF 16V M 10*20mm C918 067G215S1024KV EC 1000UF 20% 25V 12.5*20 C804 067G215S1024KV EC 1000UF 20% 25V 12.5*20 C922 067G215S4713KV EC 105℃ CAP 470UF M 16V C604 067G215S4713LV LOW ESR EC 470uF 16V M 10*12.5mm C921 067G215V1023KS...
  • Page 74 Q805 057G 763 91 ET AO4620 7.2A/30V -5.3A/-30V SOIC-8 Q806 057G 763 91 ET AO4620 7.2A/30V -5.3A/-30V SOIC-8 R905 061G0603000 RST CHIP MAX 0R05 1/10W R610 061G0603000 RST CHIP MAX 0R05 1/10W R820 061G0603100 RST CHIPR 10 OHM +-5% 1/10W R821 061G0603100 RST CHIPR 10 OHM +-5% 1/10W...
  • Page 75 R811 061G0805820 2F RST CHIPR 82KOHM +-1% 1/8W RJ801 061G1206000 RST CHIP MAX 0R05 1/4W RJ802 061G1206000 RST CHIP MAX 0R05 1/4W RJ809 061G1206000 RST CHIP MAX 0R05 1/4W RJ810 061G1206000 RST CHIP MAX 0R05 1/4W RJ811 061G1206000 RST CHIP MAX 0R05 1/4W RJ812 061G1206000 RST CHIP MAX 0R05 1/4W...
  • Page 76 C803 065G1206104 32 CHIP 0.1UF 25V X7R 1206 D806 093G 64 42 L DIODE LBAV70LT1G SOT-23 LRC D807 093G 64 42 L DIODE LBAV70LT1G SOT-23 LRC D808 093G 64 42 L DIODE LBAV70LT1G SOT-23 LRC ZD802 093G 6432S Diode 1N4148W ZD803 093G 6432S Diode 1N4148W...
  • Page 77 J606 095G 90 23 JUMPER WIRE J605 095G 90 23 JUMPER WIRE J604 095G 90 23 JUMPER WIRE J603 095G 90 23 JUMPER WIRE J602 095G 90 23 JUMPER WIRE J601 095G 90 23 JUMPER WIRE 709G2892 HA001 CONSUMPTIVE ASS'Y 715G2892 5 4 POWER BOARD PCB...

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