AOC e2051Sn Service Manual
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AOC e2051Sn Service Manual

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20" 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.......................................5
3.Operation Instruction...............................................6
3.1.General Instructions.................................................6
3.2.Hot Keys......................................................6
3.3.OSD Setting.......................................................7
4.Input/Output Specification.......................................19
4.1.Input Signal Connector.........................................19
4.2.Factory Preset Display Modes...............................20
4.3.Panel Specification.............................................21
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
All manuals and user guides at all-guides.com

Table of Contents

Page
5.Block Diagram............................................24
6.Schematic.......................................................25
6.1.Main Board....................................................25
6.2.Key Board......................................................30
7.PCB Layout.....................................................31
7.1.Main Board....................................................31
7.2.Key Board....................................................33
8.Maintainability..................................................34
8.2.Trouble Shooting.........................................35
10.Monitor Exploded View.................................41
11.BOM List..................................................43
SAFETY NOTICE
Description
AOC e2051Sn
Horizontal Frequency
30-83 KHz
Page

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  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com 20" LCD Color Monitor AOC e2051Sn Service Service Service Horizontal Frequency 30-83 KHz Table of Contents Description Page Description Page 5.Block Diagram……..…………....24 Table of Contents..……......……..1 6.Schematic……………........25 Revision List.…........…………..2 6.1.Main Board………...........25 Important Safety Notice.……......……..3 6.2.Key Board...……..........30...

  • Page 2: Revision List

    All manuals and user guides at all-guides.com Revision List Version Release Date Revision History L&T Model Name TABJT42QB7E6NNF.LF Nov-18-2011 Initial Release TABJT42KB7E6NNF.LF Jan-17-2011 Add new model TABJT42CB7SUNNF.LF Mar-21-2012 Add new model TABJT42AB7PGNNF.LF Apr-3-2012 Add new model TABJT42CB7SPNNF.LF Apr-22-2012 Add new model TABJT42KB7E6NNF.LF May-23-2012 Add new model...

  • Page 3: Important Safety Notice

    All manuals and user guides at all-guides.com 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.

  • Page 4: Monitor Specification

    All manuals and user guides at all-guides.com 1. Monitor Specifications...

  • Page 5: Lcd Monitor Description

    All manuals and user guides at all-guides.com 2. LCD Monitor Description The LCD MONITOR will contain a main board and a key board which house the flat panel control logic, brightness control logic and DDC. Monitor Block Diagram Flat Panel and LED Drive.

  • Page 6: Operation Instruction

    All manuals and user guides at all-guides.com 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. By changing these settings, the picture can be adjusted to your personal preferences. 3.2 Hotkeys Power Press the Power button to turn on/off the monitor.

  • Page 7: Osd Setting

    All manuals and user guides at all-guides.com 3.3 OSD Setting Basic and simple instruction on the control keys. 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 sub-menu .
  • Page 8 All manuals and user guides at all-guides.com Luminance Press (Menu) to display menu Press to select (Luminance), and press to enter Press to select submenu, and press to enter.
  • Page 9 All manuals and user guides at all-guides.com Press to adjust Press to exit...
  • Page 10 All manuals and user guides at all-guides.com 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 11 All manuals and user guides at all-guides.com Press to exit Clock 0-100 Adjust picture Clock to reduce Vertical-Line noise. Phase 0-100 Adjust Picture Phase to reduce Horizontal-Line noise Sharpness 0-100 Adjust picture sharpness H.Position 0-100 Adjust the horizontal position of the picture. V.Position 0-100 Adjust the vertical position of the picture.
  • Page 12 All manuals and user guides at all-guides.com Press to select submenu, and press to enter. Press to adjust. Press to exit...
  • Page 13 All manuals and user guides at all-guides.com Warm Recall Warm Color Temperature from EEPROM. Normal Recall Normal Color Temperature from EEPROM. Cool Recall Cool Color Temperature from EEPROM. Color setup. sRGB Recall SRGB Color Temperature from EEPROM. Red Gain from Digital-register User Green Green Gain Digital-register.
  • Page 14 All manuals and user guides at all-guides.com Press to select submenu, and press to enter. Press to adjust. Press to exit Frame Size 14-100 Adjust Frame Size Brightness 0-100 Adjust Frame Brightness Contras 0-100 Adjust Frame Contrast H. position 0-100 Adjust Frame horizontal Position V.position 0-100...
  • Page 15 All manuals and user guides at all-guides.com OSD Setup Press (Menu) to display menu. Press to select (OSD Setup), and press to enter. Press to select submenu, and press to enter.
  • Page 16 All manuals and user guides at all-guides.com Press to adjust. Press to exit H.Position 0-100 Adjust the horizontal position of OSD V.Position 0-100 Adjust the vertical position of OSD Timeout 5-120 Adjust the OSD Timeout Transparence 0-100 Adjust the transparence of OSD Language Select the OSD language Extra...
  • Page 17 All manuals and user guides at all-guides.com Press to select (Extra), and press to enter. Press to select submenu, and press to enter. Press to adjust. Press to exit...
  • Page 18 All manuals and user guides at all-guides.com Input Select Analog Select Analog Signal Source as Input Auto Config yes or no Auto adjust the picture to default Off timer 0-24hrs Select DC off time Image Ratio wide or 4:3 Select wide Select wide or 4:3 format for display DDC-CI yes or no...

  • Page 19: Input/Output Specification

    All manuals and user guides at all-guides.com 4. Input/Output Specification 4.1 D-SUB CONNECTORS and DVI CONNECTORS Pin Assignments Pin Number 15-Pin Side of the Signal Cable Pin Number 15-Pin Side of the Signal Cable Video-Red Video-Green Ground N.C. Video-Blue N.C. DDC- Serial data Detect Cable...

  • Page 20: Factory Preset Display Modes

    All manuals and user guides at all-guides.com 4.2 Factory Preset Display Modes...

  • Page 21: Panel Specification

    All manuals and user guides at all-guides.com 4.3 Panel Specification 4.3.1 General Features BM200WD3-T2BB is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally white mode.
  • Page 22 All manuals and user guides at all-guides.com 4.3.3 Electrical Characteristics Values Parameter Symbol Unit Notes MODULE : Power Supply Input Voltage Permissive Power Input Ripple (60Hz) 1235 LCD-MOSAIC Power Supply Input Current (60Hz) 1155 1500 LCD-BLACK (75Hz) 1800 LCD-BLACK Power Consumption 4.75 6.18 Watt...
  • Page 23 All manuals and user guides at all-guides.com 4.3.4 Optical Characteristics (Ta= 25°C, V =5.0V, fV=60Hz, D =54.0MHz, Is=110mA) Values Parameter Symbol Units Notes Contrast Ratio (PR-880) Surface Luminance, white cd/m (PR-880)  Luminance Variation WHITE (PR-880) Rise Time Response Time (RD80S) Decay Time 0.636...

  • Page 24: Block Diagram

    All manuals and user guides at all-guides.com 5. Block Diagram 5.1 Main Board CRYSTAL Panel Interface 14.318MHZ (X401) (CN406) Power Integration IC APW7080KAITRG (U705) Flash Memory Scalar IC RTD2271W-CG Pm25LD020C (Include ADC, OSD, MCU) Key Control Interface (U403)   (U401) (CN405) D-Sub Connector (CN101)

  • Page 25: Schematic

    C114 100N16V 100N16V AZC399-04S AZC399-04S T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50ID Size 絬 隔 瓜 絪 腹 715G4798-M0A-000-0040_101101 TPV MODEL AOC 50ID Key Component D-SUB I/O PCB NAME 715G4798-M0A <称爹>...
  • Page 26 R485 NC/200K 1/16W 5% T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size Custom AOC 50ID 絬 隔 瓜 絪 腹 715G4798-M0A-000-0040_101101 TPV MODEL AOC 50ID Key Component SCALER PCB NAME 715G4798-M0A 称 爹...
  • Page 27 L/T_SCL RXEC+ RXOC+ T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size AOC 50ID 絬 隔 瓜 絪 腹 715G4798-M0A-000-0040_101101 TPV MODEL AOC 50ID Key Component LVDS PANEL I/O PCB NAME 715G4798-M0A 称 爹...
  • Page 28 C719 180uF 16V 1N 50V 100N 50V T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50ID Size 絬 隔 瓜 絪 腹 715G4798-M0A-000-0040_101101 TPV MODEL AOC 50ID Key Component POWER PCB NAME <称爹>...
  • Page 29 0.2 ohm R816 0.2 ohm Custom T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC 50ID Size 絬 隔 瓜 絪 腹 715G4798-M0A-000-0040_101101 TPV MODEL AOC 50ID Key Component CONVERT PCB NAME 称 爹...

  • Page 30: Key Board

    Auto MENU Power Differential T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL AOC e943Fw Size 絬 隔 瓜 絪 腹 715G4164-K0C-000-0040_20100420.DSN TPV MODEL e943Fw Key Component 2.0 Touch key PCB NAME 715G4164-K0C <称爹> 称 爹...

  • Page 31: Pcb Layout

    All manuals and user guides at all-guides.com 7. PCB Layout 7.1 Main Board 715G4798M0G000004I...
  • Page 32 All manuals and user guides at all-guides.com...

  • Page 33: Key Board

    All manuals and user guides at all-guides.com 7.2 Key Board 715G4842K0E000004F...

  • Page 34: Maintainability

    All manuals and user guides at all-guides.com 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 35: Trouble Shooting

    All manuals and user guides at all-guides.com 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 main board and check connections Replace key board and check connections...
  • Page 36 All manuals and user guides at all-guides.com 2. No Video (Power LED White) No Video (Power LED White) Press the power Replace the main board button is OK? 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 37 All manuals and user guides at all-guides.com 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...
  • Page 38 All manuals and user guides at all-guides.com 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?

  • Page 39: White-Balance, Luminance Adjustment

    All manuals and user guides at all-guides.com 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 simpl use “SC” key and “NEXT” Key to modify xyY value and use “ID”...
  • Page 40 All manuals and user guides at all-guides.com 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.

  • Page 41: Monitor Exploded View

    All manuals and user guides at all-guides.com 10. Monitor Exploded View...
  • Page 42 All manuals and user guides at all-guides.com Description BEZEL Power lens RUBBER FEET Main frame Rear cover Hinge Stand Stand cover Base Part No. Description Stand plate 0D1G1030--8120 SCREW(MAIN BOARD/MAIN FRAME) RUBBER FOOT 0Q1G-140-10120 SCREW(REAR COVER/HINGE) MYLAR 0M1G3130--5-47-CR3 SCREW(REAR COVER/MAIN FRAME) KEY BOARD 0M1G1730--8225-CR3 SCREW(STAND/HINGE)

  • Page 43: Bom List

    2ndSOUR 089G-725LAA-DB SINGAL CABLE 1500MM HONGSHUO 0D1G1030--8120 screw 0M1G1730--8225-CR3 screw(Hinge) 0M1G3130--5-47-CR3 SCREW M3 x5 0Q1G-140-10120 SCREW 0Q1G1030--6120 SCREW 708GAG01-CP-3A AOC 40(2514) Q45G--77--4 PE FILM Q50G---4-10 TIE (Y1900221) Q52G---1185-98 3M TAPE 750GBT200W3BB1N1 PANEL BM200WD3-T2BB 2436L-2513A BM200WD3-T2BB-T11 3110T-0855A GALVALUME, T=0.3, BM200WD3-TJA1 3110T-0855B GALVALUME, T=0.3, BM200WD3-TJA1...
  • Page 44 All manuals and user guides at all-guides.com LTXXNSSNXX1-02000B07, 452.1 X 255.9, LGC, 6308L-3177A T, X, X, N, S, S, N, X, X, 1, 02000, Bottom, 07 Source, Single, None-C/SKD, 6871L-2612A LM200WD3-TJC1-T11, Single Side 0CH2102K562 1NF 50V K X 1608 R/TP C65,C66,C91 0CH2103K562 10NF, K, 50V, X7R, 0.9mm, 1608, R/TP...
  • Page 45 All manuals and user guides at all-guides.com TNI8016-100M, DACOWELL, 10UH, M=20%, 0LCAA-0069B 2.1A, 0.093, 8.0X11.0X1.8 (1.2MM, IN-BOARD), R/TP R10,R107,R132,R133, R136,R142,R17,R177, R180,R181,R182,R18 0RH0000C622 0 OHM 1/16W 1608 5% D R/TP 3,R19,R31,R72,R75,R 77,R81,R97 0RH0102C422 10 OHM 1/16W 1608 1% D R/TP R191,R193 0RH0221C622 2.2 OHM 1/16W 1608 5% D R/TP R106...
  • Page 46 All manuals and user guides at all-guides.com 0RH7500C422 750 OHM 1/16W 1608 1% D R/TP 0RH8200C422 820 ohm, 1/16W, 1608, 1%, R/TP R15,R42 0RH8201C422 8.2K OHM 1/16W 1608 1% D R/TP 0RH9100C422 910 OHM 1/16W 1608 1% D R/TP AR3,AR4,AR5,AR6 0RHZL10005A 100OHM 5 1/16W 3216 R/TP FL1,FL2,FL3...
  • Page 47 All manuals and user guides at all-guides.com 756GFBCB-AA009--00 MAINBOARD-CBPCBT4ACAA SMTCA-U403 100GARJA000FT1 MCU ASS’Y-056G2233-11 A15G1636701 Main-frame A15G1648101 PlATE A33G1203AED-1B010 stand-top A33G1204--1-1C0100 Power lens A34G2581AED-1B010 Stand-cover A34G2582AED-1B013 BASE A34G2595AEDB1B01 BEZEL A34G2596AED-2B010 Rear cover A37G0252012 hinge CN406 033G801930F-CH--JS WAFER 30P 1.0MM JINGSHI C716 067G204V471-2L CS CAP 470uF +-20% 10V 8*8 LELON 2ndSOUR...
  • Page 48 All manuals and user guides at all-guides.com 2ndSOUR 067G305S1013HV EC 100UF 20% 16V 6.3*7 CN701 F88G-304-11-YG DC JACK 3P BLACK YCG 2ndSOUR 088G-304-11--C DC JACK 3P BLACK CL CN803 033G801910Y--H WAFER 10P 1.0MM GAOLIN 2ndSOUR 311GF050B10ADH FFC CONN 10P 0.5MM HR U401 056G-562433 IC SCALER RTD2271W-CG QFP-128 Realtek...
  • Page 49 All manuals and user guides at all-guides.com R416,R428,R435,R70 RST CHIPR 10 KOHM +-5% 1/16W 0402 TZAI 061G0402103-JT 2,R703,R719 YUAN R437,R712,R721,R80 RST CHIPR 100 KOHM +-5% 1/16W 0402 TZAI 061G0402104-JT YUAN R427,R429,R431,R43 RST CHIPR 22 OHM +-5% 1/16W 0402 TZAI 061G0402220-JT YUAN RST CHIPR 2.2 KOHM +-5% 1/16W 0402 TZAI R122,R123,R445...
  • Page 50 All manuals and user guides at all-guides.com RST CHIPR 270 KOHM +-1% 1/10W 0603 R802,R834 061G06032703FF FENGHUA RST CHIPR 53.6KOHM +-1% 1/10W 0603 R715 061G06035362FF FENGHUA RST CHIPR 6.2 KOHM +-1% 1/10W 0603 R430 061G06036201FF FENGHUA R809 061G06036801FF RST CHIPR 6.8KOHM +-1% 1/10W FENGHUA R801 061G0805100-JT RST CHIP 10R 1/8W 5% TZAI YUAN...
  • Page 51 All manuals and user guides at all-guides.com MLCC 0603 0.47uF -10% 16V X7R TAIYO 2ndSOUR 065G060347412K---T YUDEN C802 065G060368332K---Y MLCC 0603 68nF +-10% 50V X7R YAGEO C413,C424,C425 065G0805106A5K---A MLCC 0805 10uF +-10% 10V X5R SAMSUNG MLCC 0805 10uF -10% 10V X5R TAIYO 2ndSOUR 065G0805106A5K---T YUDEN...
  • Page 52 F44GAG01615-2A Carton for e2051Sn F52G1201163001 double sides adhesive tape F52G1801499001 Mylar F70G20C1615-2C e2051Sn CD MANUAL F80G-L19A09-HR Adapter 19V 1.3A 25W AOC HONOR E08901 F89G604A15N-HL POWER CORD 1500MM Europe HONGLIN 2ndSOUR F89G604A15N-JR POWER CORD 1500MM EUROPE JIANRUN 2ndSOUR 089G604A15N-IS POWER CORD 1500MM Europe I-SHENG...
  • Page 53 All manuals and user guides at all-guides.com YUAN R002,R003,R007,R00 RST CHIPR 4.7 KOHM +-5% 1/16W 0402 TZAI 061G0402472-JT YUAN C008 065G040210131J---Y MLCC 0402 100pF +-5% 50V NPO YAGEO 2ndSOUR 065G040210131J---A MLCC 0402 100pF -5% 50V NPO SAMSUNG C005,C006,C007 065G040210427Z---Y MLCC 0402 0.1uF -20%+80% 25V Y5V YAGEO MLCC 0402 0.1uF -20% 80% 25V Y5V TAIYO 2ndSOUR 065G040210427Z---T...

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