AOC e2250Swn Service Manual
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AOC e2250Swn Service Manual

21.5" lcd monitor
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21.5" LCD Monitor
Service
Service
Service
Description
Table of Contents....................................................1
Revision List...................................................................2
Important Safety Notice.................................................3
1.Monitor Specification...................................................4
2.LCD Monitor Description.........................................5
3.Operation Instruction.................................................6
3.1.General Instructions..................................................6
3.2.Control Buttons and Connections...............................6
3.3.OSD Setting.............................................................8
4.Input/Output pecification..........................................24
4.1.Input Signal Connector..........................................24
4.2.Preset Display Modes...... ..........................25
4.3.Panel Specification...........................................26
5.Block Diagram............................................................28
5.1.Main Board.....................................................28
5.2.Power Board..................................................29
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..........................................................30
6.1.Main Board.......................................................30
6.2.Power Board....................................................34
7.PCB Layout.........................................................36
7.1.Main Board......................................................36
7.2.Power Board.....................................................38
7.3.Key Board........................................................39
8.Maintainability.....................................................40
8.2.Trouble Shooting.............................................41
10.Monitor Exploded View......................................47
11.BOM List......................................................48
SAFETY NOTICE
1
AOC e2250Swn
Horizontal Frequency
30 - 83kHz
Page

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  • Page 1: Table Of Contents

    21.5" LCD Monitor AOC e2250Swn Service Service Service Horizontal Frequency 30 - 83kHz Table of Contents Description Page Description Page Table of Contents…………………..…………………..…...1 6.Schematic…………..….........30 Revision List.…...........……..2 6.1.Main Board..…….…...........30 Important Safety Notice.….…......……..3 6.2.Power Board..……….........34 1.Monitor Specification......………....4 7.PCB Layout..………..........36 2.LCD Monitor Description……….……………………..5 7.1.Main Board………..…........36...

  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name TIBMRV2BDFA2NNE Initial release Dec.-28-2011 TIBKRV2BDFA1NNE TIA4RV2YAGACNNE TIB1RV2QAGA1NNE TIB2RV2BAGA1NNE TIB2RV2BDFA1NNE TIB2RV2YAGA1NNE TIBKRV2BAGA7NNE TIBKRV2QAGA12NE Feb.-20-2013 Add new models TIC1RV2BAGA1NNE TIC1RV2BAGA3NNE TIC1RV2BAGA7NNE TIC1RV2YAGA1NNE TICARV2BAGA1NNE TICARV2BAGA2NNE...

  • 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...

  • Page 5: Lcd Monitor Description

    2.LCD Monitor Description The LCD monitor will contain a main board, a power 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.

  • Page 6: Operation Instruction

    3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor (See Figure ). By changing these settings, the picture can be adjusted to your personal preferences. * The power cord should be connected.
  • Page 7 1. Power 2. Analog (DB-15 VGA cable) 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 8: Osd Setting

    3.3 OSD Setting Basic and simple instruction on the control keys. 1)Press the MENU-button to activate the OSD window. 2) Press - or + to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate it . press - or + to navigate through the sub-menu functions. Once the desired function is highlighted, press MENU-button to activate it.
  • Page 9 Luminance Press (Menu) to display menu. Press to select (Luminance), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 10 Press two times to exit.
  • Page 11 Image Setup Press (Menu) to display menu. Press to select (Image Setup), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 12 Press two times to exit.
  • Page 13 Color Setup Press (Menu) to display menu. Press to select (Color Setup), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 14 Press two times to exit.
  • Page 15 Picture Boost Press (Menu) to display menu. Press to select (Picture Boost), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 16 Press two times to exit.
  • Page 17 OSD Setup Press (Menu) to display menu. Press to select (OSD Setup), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 18 Press two times to exit.
  • Page 19 Extra Press (Menu) to display menu. Press to select (Extra), and press to enter. Press to select submenu, and press to enter. Press to adjust.
  • Page 20 Press two times to exit.
  • Page 21 Exit Press (Menu) to display menu. Press to select (Exit), and press to enter. Press two times to exit...
  • Page 22 Orange or red e-Saver Welcome to use AOC e-Saver monitor power management software! The AOC e-Saver features Smart Shutdown functions for your monitors, allows your monitor to timely shutdown when PC unit is at any status (On, Off, Sleep or Screen Saver);...
  • Page 23 Screen+ Welcome to "Screen+" software by AOC, Screen+ software is a desktop screen splitting tool, it splits the desktop into different panes, each pane displays a different window. You only need to drag the window to a corresponding pane, when you want to access it. It supports multiple monitor display to make your task easier. Please follow the...

  • Page 24: Input/Output Pecification

    4. Input/Output Specification 4.1 Input Signal Connector Analog connector...

  • Page 25: Preset Display Modes

    4.2 Preset Display Modes...

  • Page 26: Panel Specification

    4.3 Panel Specification 4.3.1 General Features M215HGE-L23 is a 21.5” TFT Liquid Crystal Display module with WLED Backlight unit and 30 pins 2ch-LVDS interface. This module supports 1920 x 1080 Full HD mode and can display up to 16.7M colors. The converter module for Backlight is not built in.
  • Page 27 original value. 4.3.4 Optical Characteristics...

  • Page 28: Block Diagram

    04.Output 05.Power 03.Scalar T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50 ID(1A) 絬 隔 瓜 絪 腹 715G4737-M0B-000-0040_101028 TPV MODEL AOC 50 ID(1A) Key Component 01.Top PCB NAME 715G4737-M0B <称爹> 称 爹...

  • Page 29: Power Board

    5.2 Power Board AC input Transformer Rectifier Bridge 14.5V EMI filter (T901) diodes Rectifier and Filter Start Resistor (R908,R911) Feedback PWM Control Circuit Power Switch LD7576AGR (Q901) (U901) Photo coupler Regulator (U902) (IC903) L801 D801 14.5V C809 MOSFET (Q801) (CN804) PWM Control ON/OFF OZ9998BGN...

  • Page 30: Schematic

    DDC1_SCL Q407 LMBT3904LT1G EDID_CTRL T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50 ID(1A) Size 絬 隔 瓜 絪 腹 715G4737-M02-000-0040_110620 TPV MODEL AOC 50 ID(1A) Key Component 02.Input PCB NAME 715G4737-M02 称 爹...
  • Page 31 NC/CONN C433 NC/CONN ZD401 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50 ID(1A) Size NC/RLZ5.6B 絬 隔 瓜 絪 腹 715G4737-M02-000-0040_110620 TPV MODEL AOC 50 ID(1A) Key Component 03.Scalar PCB NAME 715G4737-M02 称...
  • Page 32 120OHM C421 100UF 16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50 ID(1A) AO3401A 絬 隔 瓜 絪 腹 715G4737-M02-000-0040_110620 TPV MODEL AOC 50 ID(1A) Key Component 04.Output PCB NAME 715G4737-M02 <称爹>...
  • Page 33 100 ohm R486 0 ohm T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50 ID(1A) 絬 隔 瓜 絪 腹 715G4737-M02-000-0040_110620 TPV MODEL AOC 50 ID(1A) Key Component 05.Power PCB NAME 715G4737-M02 <称爹>...

  • Page 34: Power Board

    6.2 Power Board 715G4744P01000001C R929 100 OHM 1/4W BD901 C916 C928 F801 KBP208G R930 100 OHM 1/4W 2N2 500V 2N2 500V 0R05 1/4W +14.5V R903 100 OHM 1/4W R904 ZD901 250OHM2W MTZJ T-72 16B 80GL22T-3 C918 680UF/25V T901 D901 POWER X'FMR SR515 R905 470OHM +-5% 1/8W...
  • Page 35 FB802 D801 L801 CN803 +14.5V C801 47UH BEAD Q801 R804 330uF 25V C814 SK310B 100N 50V 10 OHM 1/8W APM8005KCTRG R801 C810 R815 10K 1/8W 0.47UF 50V R819 R820 R821 R822 160K 1/8W NC/CONN ON/OFF R814 10 OHM 1% 1/4W R802 C809 R805...

  • Page 36: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G4641M01000004S...

  • Page 38: Power Board

    7.2 Power Board 715G4744P01000001C...

  • Page 39: Key Board

    7.3 Key Board 715G4747K01000001C...

  • Page 40: 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 41: 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 42 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 Check the LVDS/FFC Replace the LVDS/FFC cable or panel cable or panel Replace the key board...
  • Page 43 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 44 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 45: White-Balance,Luminance Adjustment

    9.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 46 B. Adjust Normal (7300K) color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x=302±30 ，y=318±30 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5.

  • Page 47: Monitor Exploded View

    10.Monitor Exploded Views PART NAME Q'TY BEZEL FUNCTION BUTTON POWER LENS MYLAY MAIN FRAME HINGE PLATE REAR COVER HINGE STAND STAND COVER BASE RUBBER FOOT HINGE COVER...

  • Page 48: Bom List

    REAR COVER CKD A34G2549ABJ 2B0130 BASE AM1G1740 10125 SCREW H37G0030014 HINGE 21.5 H40G 001624 1A CARTON LABEL BARCODE 1 H40G 20N61544A E2050SN ID LABEL-EU H40G 45762413B P/N LABEL FOR BASE H44GB018103 H44GB018203 H44GB018615 6B ARTWORK CARTON e2250Swn H45G 77 6 PE PACKING...
  • Page 49 KEPCAHB5 KEY BOARD PLPCBB381MHD1 POWER BOARD Q40G 58162435A LABEL Q45G 76 28 H P.E. BAGx320x210x0.04 Q52G 1185 99 BIG CARTON TAPE FOR AOC Q52G1001207 A JY AL FOIL Q52G1001211 B JY AL FOIL Q52G6019 14 TAPE E08907 S95G179T30NE34 2nd source FFC CABLE 30P 190mm P1.0MM...
  • Page 50 H40G 45762429A LABEL BD901 093G 50460515 BRIDGE KBP308G-C 3A 800V KBP Q55G 100625 TIN STICK_LOW ARGENTUM C423 067G305M1013PB EC 100uF M 16V 6.3*7mm JH CD70H C421 067G305M1013PB EC 100uF M 16V 6.3*7mm JH CD70H C427 067G305M1013PB EC 100uF M 16V 6.3*7mm JH CD70H C426 067G305M1013PB EC 100uF M 16V 6.3*7mm JH CD70H...
  • Page 51 R435 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R433 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R414 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R410 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R408 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN...
  • Page 52 C407 065G040210412K CAP CHIP 0402 100nF K 16V X7R C406 065G040210412K CAP CHIP 0402 100nF K 16V X7R C403 065G040210412K CAP CHIP 0402 100nF K 16V X7R C401 065G040210412K CAP CHIP 0402 100nF K 16V X7R C404 065G0402105A5K CAP CHIP 0402 1UF K 10V X5R C411 065G040220031J CAP 0402 20PF 5% 50V NP0...
  • Page 53 U901 056G 379529 AC/DC CONVERTER IC LD7576AGR SOP-7 U801 056G 700 11 LED DRIVER OZ9998BGN-A1-0-TR SOP-16 Q801 057G 763 92 FET P8008HV 4A/80V SOP-8 RJ801 061G0805000 JF RST CHIPR 0 OHM +-5% 1/8W FENGHUA R804 061G0805100 JF RST CHIPR 10 OHM +-5% 1/8W FENGHUA R916 061G08051002FT RST CHIP 10K 1/8W 1%...
  • Page 54 C813 065G080510131J CAP CHIP 0805 100PF J 50V NPO C812 065G080510131J CAP CHIP 0805 100PF J 50V NPO C923 065G080510232K CAP 0805 1000PF 10% 50V X7R C803 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C914 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C906 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10%...
  • Page 55 Q904 057G 530503 T 2SD1207T J801 095G 90 23 JUMPER WIRE J802 095G 90 23 JUMPER WIRE J803 095G 90 23 JUMPER WIRE J804 095G 90 23 JUMPER WIRE J805 095G 90 23 JUMPER WIRE J806 095G 90 23 JUMPER WIRE J807 095G 90 23 JUMPER WIRE...

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