AOC e2436Pa Service Manual
AOC e2436Pa Service Manual

AOC e2436Pa Service Manual

24" lcd color monitor

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24" LCD Color Monitor
Service
Service
Service
Description
Table of Contents....................................................1
Revision List...................................................................2
Important Safety Notice.................................................3
1.Monitor Specification...................................................4
2.LCD Monitor Description.........................................6
3.Operation Instruction.................................................7
3.1.General Instructions..................................................7
3.2.Control Buttons and Connections...............................7
3.3.Adjusting the Picture......................................9
4.Input/Output Specification........................................25
4.1.Input Signal Connector..........................................25
4.2.Factory Preset Display Modes................................26
4.3.Panel Specification...........................................27
5.Block Diagram............................................................30
5.1.Main Board.....................................................30
5.2.Power Board..................................................31
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
R FOR TH
UNIT WHEN S

TABLE OF CONTENTS

Page
Description
6.Schematic..........................................................32
6.1.Main Board.......................................................32
6.2.Power Board....................................................36
7.PCB Layout........................................................38
7.1.Main Board......................................................38
7.2.Power Board.....................................................39
7.3.Key Board........................................................43
7.4.USB Board.......................................................43
8.Maintainability.....................................................44
8.2.Trouble Shooting.............................................45
10.Monitor Exploded View......................................51
11.BOM List.....................................................52
SAFETY NOTICE
AOC e2436Pa
Horizontal Frequency
30-80 kHz
Page

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Summary of Contents for AOC e2436Pa

  • Page 1: Table Of Contents

    24" LCD Color Monitor AOC e2436Pa Service Service Service Horizontal Frequency 30-80 kHz TABLE OF CONTENTS Description Page Description Page Table of Contents…………………..…………………..…...1 6.Schematic…………..….........32 Revision List.…...........……..2 6.1.Main Board..…….…...........32 Important Safety Notice.….…......……..3 6.2.Power Board..……….........36 1.Monitor Specification......………....4 7.PCB Layout..………..........38 2.LCD Monitor Description……….……………………..6 7.1.Main Board………..…........38...
  • Page 2: Revision List

    Revision List Revision Date Revision History Remark Apr.-15-2012 Initial release TKBAA86B6WA1DNE...
  • Page 3: Important Safety Notice

    Consequently, AOC has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.
  • Page 4: Monitor Specification

    1. Monitor Specifications...
  • Page 6: Lcd Monitor Description

    2. LCD Monitor Description The LCD monitor will contain a main board, an adapter board, a converter board, two USB boards 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.
  • 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 1.Power 2.Analog (DB-15 VGA cable) 3 Audio 4.DVI To protect equipment, always turn off the PC and LCD monitor before connecting. 1. Connect the power cable to the AC port on the back of the monitor. 2. Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the other end to the computer's D-Sub port.
  • Page 9: Adjusting The Picture

    3.3 OSD Setting Basic and simple instruction on the control keys. When you press the MENU button on the front control of your monitor, the On DOWN Screen Display (OSD) Main Controls window will pop up and you can then start making adjustments to your monitor's various features. Use the UP or DOWN keys to make your adjustments.
  • Page 10 Eco mode...
  • Page 11 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 12 Color Boost...
  • Page 13 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...
  • Page 15 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 16 Image Setup...
  • Page 17 Notes : When the input source is digital signal like DVI or HDMI, Image Setup can not be adjusted.
  • Page 18 Color Temperature...
  • Page 20 Picture Boost...
  • Page 21 Notes : One of DCR, Color Boost, and Picture Boost functions is active, the other two function is turned off accordingly.
  • Page 22 Extra Setting...
  • Page 24 Exit LED Indicator...
  • Page 25: Input/Output Specification

    4. Input/Output Specification 4.1 Input Signal Connector D-SUB connector...
  • Page 26: Factory Preset Display Modes

    4.2 Factory Preset Display Modes...
  • Page 27: Panel Specification

    4.3 Panel Specification 4.3.1 Display Characteristics AUO M215HW01...
  • Page 28 4.3.2 Optical Characteristics AUO M215HW01 Ta=25℃ 4.3.3 Electrical Characteristics 1.TFT LCD Module: AUO M215HW01 Note1:Measurement conditions: The duration of rising time of power input is 470us.
  • Page 29 2.Back Light Unit: AUO M215HW01 Ta=25℃...
  • Page 30: Block Diagram

    5. Block Diagram 5.1 Main Board 715G3329 1 2 Crystal 14.31818MHz LCD Interface (X401) (CN301) FLASH MEMORY Scalar TSUMU58PWHL-LF-1 Key Control MX25L2026DM1I Interface (Include :MCU,ADC,OSD etc) (U402) (CN402) (U401) D-Sub Connector Connector (CN102) (CN101)
  • Page 31: Power Board

    5.2 Power Board Adapter 715G2824P04010001S AC input Bridge Rectifier EMI filter Transformer Rectifier diodes and Filter Start Resistor (R904,R905) Feedback PWM Control Circuit Power Switch LD7576 (Q901) (IC901) Regulator Photo coupler (IC904) (IC903) Converter 715G4013P02001004S L801 D801 14.5V MOSFET (Q806) (CN806) PWM Control MP3389EF...
  • Page 32: Schematic

    Electronics Co . , Ltd. ) OEM MODEL NEW R SERIES Size FB110 絬 隔 瓜 絪 腹 G3329-C-2-X-2-090401 TPV MODEL AOC 2236VWA Key Component 2.0.INPUT PCB NAME 称 爹 <称爹> 300 OHM Wednesday , June 10, 2009 Sheet Date...
  • Page 33 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size NEW R SERIES 絬 隔 瓜 絪 腹 G3329-C-2-X-2-090401 TPV MODEL AOC 2236VWA Key Component 3.0.OUTPUT PCB NAME 称 爹 <称爹> Wednesday , June 10, 2009 Sheet Date...
  • Page 34 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL NEW R SERIES Size 絬 隔 瓜 絪 腹 G3329-C-2-X-2-090401 TPV MODEL AOC 2236VWA Key Component 4.0.POWER PCB NAME 称 爹 <称爹> Wednesday , June 10, 2009 Sheet Date...
  • Page 35 100R 1/16W 5% R453 0R 1/16W 5% POWER_KEY # U402 LED_GRN/BLUE LED_ORANGE R430 100R 1/16W 5% R455 2.2K 1/16W 5% 010A Befor AOC ID2007 OSD R418 C431 C432 C433 ZD401 C434 C435 0R05 1/16W R440 10K 1/16W 5% R461 0R 1/16W 5%...
  • Page 36: Power Board

    6.2 Power Board Adapter 715G2824P04010001S L904 820 OHM 2W 100 OHM 1/4W R918 R947 +16V 100 OHM 1/4W R919 Coil BD901 C912 1000pF630V 100 OHM 1/4W R920 C917 ZD902 C918 R946 TZX18B 680uF25V D906 FMX-12SL 680uF25V 820 OHM 2W T901 R943 FB902 POWER X'FMR...
  • Page 37 Converter 715G4013P02001004S D801 L801 CN801 +14.5V 22uH Q806 F801 AO4828L SK310B C810 C812 220P 50V R801 33UF 100V 4.7UF 100V C809 R805 0R05 4A 1/4W 10 OHM 1% 100uF 50V C807 R839 270K 1/8W 5% CONN C803 ON/OFF 0R05 1/10W U801 470N 25V CN804...
  • Page 38: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G3329 1 2...
  • Page 39: Power Board

    7.2 Power Board Adapter 715G2824P04010001S...
  • Page 41 Converter 715G4013P02001004S...
  • Page 43: Key Board

    7.3 Key Board 715G3371 2 7.4 USB Board 715G3501 3 715G2663 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: White-Balance,Luminance Adjustment

    9. White- Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding White-Balance adjustment. 1. How to do the Chroma-7120 MEM. Channel setting A. Reference to chroma 7120 user guide B. Use “ SC” key and “ NEXT” key to modify x, y, Y value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust 2.
  • Page 50 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/m 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5.
  • Page 51: Monitor Exploded View

    10. Monitor Exploded View...
  • Page 52: Bom List

    A85G0140201 AC Shield ADPCB1603HD7 ADAPTER BOARD H37G0015 2AEI 001 Hinge Ass'y H40G 001624 1A CARTON LABEL BARCODE 1 H40G 24N61557A E2436PA EU ID LABEL H40G 45762413B P/N LABEL FOR BASE H40G000261553A TCO'05 EPA LABEL H41G780061596A WARRANTY CARD H44GD003 3EPE H44GD003101...
  • Page 53 Q40G 58162435A LABEL Q45G 76 28 H P.E. BAGx320x210x0.04 Q50G 4 10 TIE (Y1900221) Q52G 1185 99 BIG CARTON TAPE FOR AOC 72MM Q52G1001211 B JY AL FOIL ECN301 S95G179T30NW09 FFC CABLE 30p 220mm 1.0mm USB9HA3 USB BOARD USBAHA5 USB BOARD...
  • Page 54 CN102 088G 35424F CH DVI 24PIN CONN F ATTACHED SCREW X401 093G 2253B J NXS14.31818AC32F-KAB10 709G3329 HM003 CONSUMPTIVE ASS'Y H40G 45762429A LABEL A33G0564 2 1L0100 Key-Guide H52G1201 1 3M DOUBLE FACE TAPE SMTKEPCBHA8 KEY BOARD FOR SMT CN511 033G3802 5 BH CONNECTOR 5PIN CN512 088G 352 2 XH...
  • Page 55 JR901 061G1206000 JT RST CHIPR MAX0R05 1/4W TZAI YUAN JR606 061G1206000 JT RST CHIPR MAX0R05 1/4W TZAI YUAN JR905 061G12060004JF RST CHIPR MAX0R05 4A 1/4W FENGHUA F801 061G12060004JF RST CHIPR MAX0R05 4A 1/4W FENGHUA FB902 061G12060004JT RST CHIPR 1206 MAX0R05 4A 1/4W TZAI YUAN R910 061G1206100 JT RST CHIPR 10 OHM +-5% 1/4W TZAI YUAN...
  • Page 56 U001 056G 669 10 TOUCH KEY CG7246AMT QFN-16(COL) R012 061G0603000 JT RST CHIP MAX 0R05 1/10W TZAI YUAN R009 061G0603000 JT RST CHIP MAX 0R05 1/10W TZAI YUAN R008 061G0603000 JT RST CHIP MAX 0R05 1/10W TZAI YUAN R001 061G0603000 JT RST CHIP MAX 0R05 1/10W TZAI YUAN R002 061G0603101 JT...
  • Page 57 J601 095G 90 23 JUMP WIRE - - J910 095G 90 23 JUMP WIRE - - J911 095G 90 23 JUMP WIRE - - J912 095G 90 23 JUMP WIRE - - J913 095G 90 23 JUMP WIRE - - J604 095G 90 23 JUMP WIRE - -...
  • Page 58 U103 056G 662 52 ESD PROTECT AZC398-04S.R7G SOT23-6 U101 056G1133 34 EEPROM M24C02-WMN6TP 2Kb SO-8 U102 056G1133 34 EEPROM M24C02-WMN6TP 2Kb SO-8 U402 056G2233501 FLASH MX25L2026DM1I-12G 2Mb SOP-8 Q401 057G 417518 TRA LMBT3904LT1G 200mA/40V SOT-23 LRC Q302 057G 417518 TRA LMBT3904LT1G 200mA/40V SOT-23 LRC Q701 057G 417518 TRA LMBT3904LT1G 200mA/40V SOT-23 LRC...
  • Page 59 R107 061G0402222 JF RST CHIPR 2.2KOHM +-5% 1/16W FENGHUA R106 061G0402222 JF RST CHIPR 2.2KOHM +-5% 1/16W FENGHUA R304 061G0402223 JF RST CHIPR 22KOHM 5% 1/16W FENGHUA R406 061G0402223 JF RST CHIPR 22KOHM 5% 1/16W FENGHUA R704 061G0402223 JF RST CHIPR 22KOHM 5% 1/16W FENGHUA R401 061G04023900FF RST CHIPR 390 OHM +-1% 1/16W FENGHUA...
  • Page 60 C412 065G040210412K CAP CHIP 0402 100nF K 16V X7R C436 065G0402105A5K NO-SUGGEST CAP 0402 1UF 10% 10V X5R C103 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5% C104 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5% C116 065G040222415K CAP CHIP 0402 220nF 16V X5R C117 065G040222415K CAP CHIP 0402 220nF 16V X5R...

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