AOC E2250SWDN Service Manual
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AOC E2250SWDN Service Manual

AOC E2250SWDN Service Manual

21.5 inch
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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 Specification........................................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....................................................35
7.PCB Layout.........................................................37
7.1.Main Board......................................................37
7.2.Power Board.....................................................39
7.3.Key Board........................................................40
8.Maintainability.....................................................41
8.2.Trouble Shooting.............................................42
10.Monitor Exploded View.....................................48
11.BOM List......................................................49
SAFETY NOTICE
AOC E2250SWDN
Horizontal Frequency
30 - 83kHz
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  • Page 1: Table Of Contents

    21.5" LCD Monitor AOC E2250SWDN 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..……….........35 1.Monitor Specification......………....4 7.PCB Layout..………..........37 2.LCD Monitor Description……….……………………..5 7.1.Main Board………..…........37...

  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name TIBKN22QAGE6HNE Initial release Feb.-21-2012 TIBKN22KAGE6HNE TIAKN22LAGACHNE TIB2N22BAGA1HNE TIB2N22BDFA1HNE TIB2N22KAGE6HNE TIB2N22QAGE6HNE TIBKN22BDFA1HNE Feb.-20-2013 Add new models TIC1N22BAGA1HNE TIC1N22KAGE6HNE TIC1N22QAGE6HNE TICAN22KAGE6HNE TICAN22KAGE7HNE TICAN22QAGE7HNE...

  • 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 board 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) 3. 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 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 Exit Exit the main OSD...
  • 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 Specification

    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 HM215WU1-500 is a color active matrix TFT LCD module using amorphous silicon TFT's (Thin Film Transistors) as an active switching devices. This module has a 21.5 inch diagonally measured active area with FHD resolutions (1920 horizontal by 1080 vertical pixel array).
  • Page 27 The current draw and power consumption specified is for VDD=5.0V, Frame rate=75Hz. Test Pattern of power supply current a) Typ : Color Bar pattern b) Max : Skip Sub Pixel Pattern 2. Duration of rush current is about 2 ms and rising time of VDD is 520 μs ± 20 % 4.3.4 Optical Characteristics [VDD = 5.0V, Frame rate = 60Hz, Clock = 78MHz, IBL = 240mA, Ta =25±2 ℃]...

  • Page 28: Block Diagram

    5. Block Diagram 5.1 Main Board 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 PB[0..9] PB[0..9] EDID_WP...

  • Page 29: Power Board

    5.2 Power Board Transformer Rectifier Bridge 14.5V EMI filter (T901) diodes Rectifier and Filter Start Resistor (R908,R911) Feedback PWM Control Circuit Power Switch LD7576AGR (U901) (Q901) Photo coupler Regulator (U902) (IC903) L801 D801 14.5V C809 MOSFET (Q801) (CN804) PWM Control OZ9998BGN (U801)

  • Page 30: Schematic

    6. Schematic 6.1 Main Board 715G4502M01000004C CN101 DET_VGA R102 100R 1/16W 5% VGA_CABLE_DET VGA_CABLE_DET 5 D-SUB 15P VGA_5V DDCSCL1 DDCSCL_A R101 DDCSCL1 VGA_5V 100R 1/16W 5% 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 31 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 ESD_DVI Q101 ESD_DVI...
  • Page 32 VCC1.8 U401 NT68660FG FB401 and FB402 is VCC1.8 7 PB[0..9] R402 NC/2K2 1/16W 5% NC==>3.3V use TO252 type PB[0..9] LVB3P FB401 R403 NC/2K2 1/16W 5% CVDD LVB3M 300OHM U401 NT68660UFG FB402 is NC==>3.3V LVBCKP LVBCKM VCC3.3 and 1.8V LDO use SOT-223 type LVB2P C401 C402...
  • Page 33 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 RXOC- LVA0M LVBCKP RXOC+ LVB3M...
  • Page 34 VCC3.3 CN702 U701 AZ1117H-3.3TRG1 FB701 0 OHM +-5% 1/8W 3,4,5 INPUT OUTPUT VCC3.3 5 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 C705 NC/G1117-33T43UF 100uF16V ON/OFF...

  • Page 35: 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 NC/680UF/25V T901 D901 POWER X'FMR SR515 R905 470OHM +-5% 1/8W...
  • Page 36 FB802 D801 L801 CN803 +14.5V C801 47UH BEAD Q801 330uF 25V R804 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 37: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G4502M01000004C...

  • Page 39: Power Board

    7.2 Power Board 715G4744P01000001C...

  • Page 40: Key Board

    7.3 Key Board 715G4747K02000001C...

  • Page 41: 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 42: Trouble Shooting

    8.2 Trouble Shooting 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 43 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 44 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 45 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 46: 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 47 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=301±20 ，y=317±20 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5.

  • Page 48: Monitor Exploded View

    10. Monitor Exploded Views...

  • Page 49: Bom List

    A34G2549AED 1B0130 BASE FOR E2250SW AM1G1740 10125 SCREW H37G0030014 HINGE 21.5 H40G 001624 1A CARTON LABEL BARCODE 1 H40G 22N61589A E2250SWD EPI ID LABEL H40G 45762413B P/N LABEL FOR BASE H40G 58161549A guaranty sticker H44GB018103 H44GB018203 H44GB01861507A00HX ARTWORK CARTON e2250SWDN...
  • Page 50 PLPCBB581AHD1 POWER BOARD Q40G 58162435A LABEL Q45G 76 28 H P.E. BAGx320x210x0.04 Q50G 4 10 TIE (Y1900221) Q52G 1185 99 BIG CARTON TAPE FOR AOC M05201 Q52G100202500A00JY AL FOIL M05203 Q52G100204500A00JY AL FOIL M05202 Q52G100204500A00JY AL FOIL Q52G6019 14 TAPE...
  • Page 51 L906 073G 253191 H IND CHOKE 1.1uH DADON L801 073G 253214 DN CHOKE COIL 47UH 10% LZ.CC013.G01 2.5A T901 080GL22T 3 N3 X'FMR 490UH 7% 4UH YUVA-1656 CN901 087G 501 48 S AC SOCKET 3PIN + 3 Hole D902 093G 60335 DIODE SR515 5A/150V DO-201AD D901 093G 60335...
  • Page 52 R117 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 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R141 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN...
  • Page 53 R432 061G0402105 JT RST CHIP R 1Mohm 1/16W +/-5% TZAI YUAN R413 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN R411 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN R126 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN R125 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN...
  • Page 54 C411 065G040210412K CAP CHIP 0402 100nF K 16V X7R C410 065G040210412K CAP CHIP 0402 100nF K 16V X7R C409 065G040210412K CAP CHIP 0402 100nF K 16V X7R C408 065G040210412K CAP CHIP 0402 100nF K 16V X7R C405 065G040210412K CAP CHIP 0402 100nF K 16V X7R C417 065G040210412K CAP CHIP 0402 100nF K 16V X7R...
  • Page 55 FB409 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB401 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB404 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB405 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA FB408 071G 56V301 M CHIP BEAD 0805 300R 25% 700mA D101...
  • Page 56 R920 061G0805202 JF RST CHIPR 2KOHM +-5% 1/8W FENGHUA R919 061G0805221 JF RST CHIPR 220 OHM +-5% 1/8W FENGHUA R803 061G0805304 JF RST CHIPR 300KOHM +-5% 1/8W FENGHUA R802 061G0805304 JF RST CHIPR 300KOHM +-5% 1/8W FENGHUA R809 061G08053303FT RST CHIP 330K 1% 1/8W R905 061G0805471 JT RST CHIPR 470OHM +-5% 1/8W TZAI YUAN...
  • Page 57 C804 065G080547432K CAP CHIP 0805 0.47UF K 50V X7R C808 065G120610171J CAP 1206 100PF 5% 500V NP0 C916 065G120622272K CER 1206 2N2 500V X7R 10% C917 065G120622272K CER 1206 2N2 500V X7R 10% C928 065G120622272K CER 1206 2N2 500V X7R 10% C929 065G120622272K CER 1206 2N2 500V X7R 10%...
  • Page 58 J902 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J904 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J906 095G 90 23 JUMPER WIRE J907 095G 90 23 JUMPER WIRE J909 095G 90 23 JUMPER WIRE J910 095G 90 23...

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