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Manual
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.................................................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............................................................29
5.1.Main Board.....................................................29
5.2.Power Board..................................................30
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.Schematic..........................................................31
6.1.Main Board.......................................................31
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
8.1.Equipments and Tools Requirement..................41
8.2.Trouble Shooting.............................................42
9.White-Balance,Luminance Adjustment...............46
10.Mechanical Instructions ............... ..............48
11.Monitor Exploded View......................................56
12.BOM List......................................................57
SAFETY NOTICE
1
AOC e2250Swa
Horizontal Frequency
30 - 83kHz
Page
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Summary of Contents for AOC e2250Swa
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Page 1: Table Of Contents
21.5" LCD Monitor AOC e2250Swa Service Service Service Horizontal Frequency 30 - 83kHz Table of Contents Description Page Description Page Table of Contents…………………..…………………..…...1 6.Schematic…………..….........31 Revision List.…...........……..2 6.1.Main Board..…….…...........31 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 TIBARV6BAGA1ANE Initial release Jul.-19-2011 TIBARV6BAGA1A1E... -
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) 3. Audio 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.
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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 . - 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.
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Page 15: Picture Boost
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...
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Page 22: Led Indicators
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.
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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 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 27 Note 1: LVDS Signal Waveform...
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Page 28: Optical Characteristics
LED array electrical characteristics Note (1) The LED can work normally if the PWM dimming ratio range is from 0% to 100% and the operation current is 60mA. Note (2) PLED = (ILED ×4) × VLED , LED matrix is 15S4P.The lightbar used by backlight unit. Note (3) The lifetime of LED is defined as the time when it continues to operate under the conditions at Ta = 25 ±2 ℃... -
Page 29: Block Diagram
04.Output 05.Pow er 03.Scalar T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50 ID(1A) 715G4737-M0B-000-0040_101028 TPV MODEL 絬 隔 瓜 絪 腹 AOC 50 ID(1A) Key Component 01.Top PCB NAME 715G4737-M0B <称爹>... -
Page 30: 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 31: Schematic
DDC1_SCL Q407 LMBT3904LT1G EDID_CTRL T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50 ID(1A) Size 715G4737-M0B-000-0040_101028 TPV MODEL 絬 隔 瓜 絪 腹 AOC 50 ID(1A) Key Component 02.Input PCB NAME 715G4737-M0B <称爹>... - Page 32 For user data, WB, EDID, HDCP are saved in VCC3.3 VCC1.2 AVDD Flash. VCC3.3 AVDD FB401 U402 VCC3.3 30OHM LDO_CTL VCTRL 010A Befor AOC ID2007 OSD C403 C404 TXE3+ 100N16V 100N16V DSUB_R+ TXE3- 020A For ID2008 ID2009 DSUB_R- PA[0..1] DSUB_G+ PA[0..1] DSUB_G-...
- Page 33 120OHM C421 100UF 16V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50 ID(1A) AO3401A 715G4737-M0B-000-0040_101028 TPV MODEL 絬 隔 瓜 絪 腹 AOC 50 ID(1A) Key Component 04.Output PCB NAME 715G4737-M0B <称爹>...
- Page 34 NC/4K7 1/16W 5% U404 can use package 223 or 252. T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50 ID(1A) Size 715G4737-M0B-000-0040_101028 TPV MODEL AOC 50 ID(1A) 絬 隔 瓜 絪 腹 Key Component 05.Power...
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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/470UF/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...
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Page 37: Pcb Layout
7. PCB Layout 7.1 Main Board 715G4737M01000004C... -
Page 39: Power Board
7.2 Power Board 715G4744P01000001C... -
Page 40: Key Board
7.3 Key Board 715G4747K01000001C... -
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 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 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...
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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 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 4.
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Page 48: Mechanical Instructions
10.Mechanical Instructions 1. Put the monitor on the EPE pad. 2. Lay down the monitor and the bottom side faces to Yourself. - Page 49 3. Pinch the hook and remove the base. 4. Use fixture to leave off the stand.
- Page 50 5. Use fixture to remove the hinge cover. 6. Remove the screws of the stand.
- Page 51 7. Remove the screws of the back cover. 8. Overturn the monitor and the top towards to yourself, and then take apart the front frame with hands.
- Page 52 9. Prize up the front frame use fixture. 10. Overturn the monitor and take off the back cover.
- Page 53 11. According to the different defective area to take off the KEPC, light line, LVDS, Hexagon screws, CBPC or PWPC to repair. （1）Remove the KEPC. （2）Pull the light line out.
- Page 54 （3）Remove the Hexagon screws. （4）Remove the LVDS.
- Page 55 （5）Overturn the iron plate and remove the screws, PWPC and CBPC.
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Page 56: Monitor Exploded View
11.Monitor Exploded Views... -
Page 57: Bom List
POP LABEL H44GB013101 H44GB013201 H44GB013615 3A e2250swa CARTON H45G 77 6 PE PACKING H45G 87 1 25 EPE COVER H45G 87 4 H PE BAG FOR BASE H52G1801 16006 insulating sheet H70G21C1615 1B e2250Swa CD MANUAL KEPCAHB5 KEY BOARD... - Page 58 PLPCBB581AHE1 POWER BOARD Q40G 58162435A LABEL Q45G 76 28 H PE BAG FOR MANUAL Q52G 1185 99 TAPE Q52G6019 14 TAPE E08907 S95G179T30NE34 FFC CABLE 30P 190mm P1.0MM 2nd source 756GHACB A1149 MAIN BOARD-CBPCBRVA1H2 SMTCA-U402 100GARAI000W11 MCU ASS'Y-056G2233 11 CN408 033G3802 6B Y WAFER CN404...
- Page 59 BD901 093G 50460515 BRIDGE KBP308G-C 3A 800V KBP Q55G 100625 TIN STICK_LOW ARGENTUM C423 067G305M1013PB EC 100uF M 16V 6.3*7mm C421 067G305M1013PB EC 100uF M 16V 6.3*7mm C427 067G305M1013PB EC 100uF M 16V 6.3*7mm C426 067G305M1013PB EC 100uF M 16V 6.3*7mm U401 056G 562432 SCALER RTD2280LW-CG LQFP-64...
- Page 60 R491 061G0402220 JT RST CHIP 22R 1/16W 5% TZAI YUAN R490 061G0402220 JT RST CHIP 22R 1/16W 5% TZAI YUAN R489 061G0402220 JT RST CHIP 22R 1/16W 5% TZAI YUAN R105 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN R106 061G0402222 JT RST CHIP 2K2 1/16W 5% TZAI YUAN...
- Page 61 C111 065G040250931C CAP 0402 5PF 0.25pF 50V NP0 C108 065G040250931C CAP 0402 5PF 0.25pF 50V NP0 C104 065G040250931C CAP 0402 5PF 0.25pF 50V NP0 FB402 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB401 071G 59B300 M CHIP BEAD 0603 30ohm 25% 1000mA FB103 071G 59K190 M CHIP BEAD 0603 19R/500mA...
- Page 62 R815 061G0805164 JF RST 0805 160K 5% 1/8W R810 061G08052002FT RST CHIP 20K 1/8W 1% R916 061G08052002FT RST CHIP 20K 1/8W 1% R935 061G08052002FT RST CHIP 20K 1/8W 1% R920 061G0805202 JF RST CHIPR 2KOHM +-5% 1/8W FENGHUA R919 061G0805221 JF RST CHIPR 220 OHM +-5% 1/8W FENGHUA R802 061G0805304 JF...
- Page 63 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 C914 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C906 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10% C815 065G080510232K CAP CHIP 0805 1N 50V X7R +/-10%...
- Page 64 F903 084G 56 4 B FUSE 4A 250V F901 084G 56 4 B FUSE 4A 250V F902 084G 56 4 B FUSE 4A 250V ZD901 093G 39A6852T ZENER DIODES MTZJ22B DO-34 D601 093G 6452452T SWITCHING 1N4148-B4006 0.2A 100V DO-35 D907 093G 6452452T SWITCHING 1N4148-B4006 0.2A 100V DO-35 J601...