AOC e2050Swd Service Manual

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19.5" LCD Monitor AOC E2050SWD
Service
Service
Service
Horizontal Frequency
30 - 83kHz
Table of Contents
Description Page Description Page
SAFETY NOTICE
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
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...............……………….......18
4.1.Input Signal Connector...............………..................18
4.2.Preset Display Modes..........................19
4.3.Panel Specification…………..………………………..20
5.Block Diagram….........................................................22
5.1.Main Board...............................................22
5.2.Power Board……..………………………......23
6.Schematic…………...........................................24
6.1.Main Board..……............................................24
6.2.Power Board..……….........................................29
6.3.Key Board..…….........................................31
7.PCB Layout..………..............................................33
7.1.Main Board………..…........................................33
7.2.Power Board...............................................34
7.3.Key Board………............................................36
8.Maintainability………............................................37
8.1.Equipments and Tools Requirement...............37
8.2.Trouble Shooting…..……...............................38
9.White-Balance,Luminance Adjustment…..............42
10.Monitor Exploded View……................................44
11.BOM List…………..……………………….............45
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Summary of Contents

Page 1 - Service

19.5" LCD Monitor AOC E2050SWD Service Servi

Page 2 - Revision List

10 Image Setup 1 Press (Menu) to display menu. 2 Press - or + to select (Image Setup), and press to enter. 3 Press - or + to select sub

Page 3 - Important Safety Notice

11 Color Setup 1 Press (Menu) to display menu. 2 Press - or + to select (Color Setup), and press to enter. 3 Press - or + to select sub

Page 4 - 1.Monitor Specifications

12 Picture Boost 1 Press (Menu) to display menu. 2 Press - or + to select (Picture Boost), and press to enter. 3 Press - or + to select su

Page 5 - 2.LCD Monitor Description

13 OSD Setup 1 Press (Menu) to display menu. 2 Press - or + to select (OSD Setup), and press to enter. 3 Press - or + to select submenu,

Page 6 - 3. Operating Instructions

14 Extra 1 Press (Menu) to display menu. 2 Press - or + to select (Extra), and press to enter. 3 Press - or + to select submenu, and press

Page 7

15 Exit 1 Press (Menu) to display menu. 2 Press - or + to select (Exit), and press to enter. 3 Press - or + to select submenu, and press

Page 8

16 LED Indicators Status LED Color Full Power Mode Green or Blue Active-off Mode Orange or red e-Saver Welcome to use AOC e-Saver monitor powe

Page 9 - Luminance

17 Screen+ Welcome to "Screen+" software by AOC, Screen+ software is a desktop screen splitting tool, it splits the desktop into diff

Page 10 - Image Setup

18 4. Input/Output Specification 4.1 Input Signal Connector

Page 11 - Color Setup

19 4.2 Preset Display Modes

Page 12 - Picture Boost

2 Revision List Version Release Date Revision History TPV Model Name A00 Feb.-17-2013 Initial release T9CMN26KAGACHNE T9CMN26MAGACHNE T9CMN26IAGACHNE

Page 13 - OSD Setup

20 4.3 Panel Specification 4.3.1 General Features M195FGE-L20 is a 19.5” TFT Liquid Crystal Display module with WLED Backlight unit and 30 pins 2ch-LV

Page 14

21 Back Light Unit Ta = 25 ± 2.ºC 4.3.4 Optical Characteristics

Page 15

22 5. Block Diagram 5.1 Main Board 715G4502M01000004IPB[0..9]OEM MODEL SizeRevDateSheet ofTPV MODELPCB NAME称爹T P V ( Top Victory Electronics

Page 16 - LED Indicators

23 5.2 Power Board 715G4744P01003001M D801 C809 14.5V MOSFET (Q801)

Page 17 - Screen+

24 6. Schematic 6.1 Main Board 715G4502M01000004I BIN0-BIN0GIN0HSIN0VSIN0 DDCSDA_ADDCSCL_ACN101D-SUB 15P16273849511121314151017 16BIN0DET_VGAC18222P 5

Page 18 - 4.1 Input Signal Connector

25 DVI_HPD 5ESD_DVIDVI5VESD_DVIEDID_WPDAT1-DAT2-DAT1+DAT0+DAT0-DCLK-DCLK+SDA_DVISCL_DVIDET_DVIHPDDAT2+R128 100R 1/16W 5%R129 100R 1/16W 5%OEM MODEL Si

Page 19 - 4.2 Preset Display Modes

26 OEM MODEL SizeRevDateSheet ofTPV MODELPCB NAME称爹T P V ( Top Victory Electronics Co . , Ltd. )Key Component絬 隔 瓜 絪 腹DUAL BOTSC5 7Monda

Page 20 - 4.3 Panel Specification

27 C434100N 16VVLCD 7PB[0..9]5PA[0..9]5RXEC-RXEC+VLCDRXOC+RXOC-LVB1PPB6LVB2MPB5LVB1MPB7LVB3PPB0LVB3MPB1LVBCKPPB2LVBCKMPB3LVB2PPB4PB[0..9]LVB0PPB8LVB0M

Page 21 - Ta = 25 ± 2.ºC

28 C718100N 16VTO-252TO252R723NC/4K7 1/16W 5%DIMON/OFFPS_EN 5VCC3.3FB7010 OHM +-5% 1/8WR717NCR720NCCN702NC/CONN123456DIMON/OFFR725NCR724NCR79910K 1/16

Page 22 - 5. Block Diagram

29 6.2 Power Board 715G4744P01003001M CN903CONN1234+5V180GL22T-3ADD C906+C907A47uF M 450VэDIP 1/2W!!!OEM MODEL SizeRevDateSheet ofTPV MODELPCB NAME称爹T

Page 23 - 715G4744P01003001M

3 Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedure

Page 24 - 6. Schematic

30 R823NCR824NCCN805NC1234567 8HP W2072a/W2052aOEM MODEL SizeRevDateSheet ofTPV MODELPCB NAME称爹T P V ( Top Victory Electronics Co . , L

Page 25 - Key Component

31 6.3 Key Board 715G4747K02000001C UPMENUPOWERLBADC2LED_1#LED_2#DC_POWERONUBSURLED001132DOWNLBADC2UP(AUTO)(DOWN-)(2K)(UP+)(0)CONNECTOR(MENU) (Power)A

Page 26 - NC==>3.3V use TO252 type

32 7. PCB Layout 7.1 Main Board 715G4502M01000004I

Page 28

34 7.2 Power Board 715G4744P01003001M

Page 30

36 7.3 Key Board 715G4747K02000001C

Page 31 - 6.3 Key Board

37 8. Maintainability 8.1 Equipments and Tools Requirement 1. Voltmeter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an IBM Compati

Page 32 - 7. PCB Layout

38 8.2 Trouble Shooting 1. No Power OK NG No power Check power cable is tightened? Check Power “On/Off” is “On”? Re-plug the power cable Replace ma

Page 33

39 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power button is OK? Check the LVDS/FFC cable or panel The end NG OK OK NG Rep

Page 34 - 7.2 Power Board

4 1.Monitor Specifications

Page 35

40 3. DIM OK The end OK The end OK The end DIM (image overlap, focus or flicker) Reset in factory mode Set to the optimal frequency, select the recomm

Page 36 - 7.3 Key Board

41 4. Color is not optimal NG Color is not optimal Miss color Color shift Replace the signal cable Pull out t

Page 37 - 8. Maintainability

42 9.White- Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. How to se

Page 38 - 8.2 Trouble Shooting

43 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

Page 39 - 2. No Video (Power LED Blue)

44 10. Monitor Exploded Views NOP/NPART NAME Q'TY1Q34G7636AED* BEZEL 12A33G1181ABJ* KEY 13A33G1182 1* POWER LENS 14Q52G1801MNT160CFLTMYLAR 15A1

Page 40

45 11. BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go to http://cs.tpv.

Page 41 - 4. Color is not optimal

46 CN402 033G3802 6B Y L WAFER CN701 033G3802 9B Y L CONN 2.0 9P CN408 033G801930F CH L FFC CONN 1.0mm 30P R/A 34mm 6mm

Page 42 - 4. Gain adjustment:

47 R916 061G08051002FT RST CHIP 10K 1/8W 1% R806 061G0805102 JF RST CHIPR 1K OHM +-5% 1/8W FENGHUA R907 061G0805102 JT RST CHIPR 1K OHM +- 5% 1/

Page 43

48 C926 065G080510432K Y CAP CHIP 0805 100N 50V X7R +/-10% C912 065G080510432K Y CAP CHIP 0805 100N 50V X7R +/-10% C807 065G080522432K

Page 44 - 10. Monitor Exploded Views

49 FB801 071G 55 29 FERRITE BEAD FB802 071G 55 29 FERRITE BEAD FB901 071G 55 29 FERRITE BEAD FB902 071G 55 29 FERRITE BEAD FB9

Page 45 - 11. BOM List

5 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, brightn

Page 46

50 R141 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R140 061G0402100 JT RST CHIP 10R 1/16W 5% TZAI YUAN R139 061G0402100 JT RST CHIP 10R 1/16

Page 47

51 R405 061G0402392 JT RST CHIP R 3K9 +/-5% 1/16W TZAI YUAN R404 061G0402392 JT RST CHIP R 3K9 +/-5% 1/16W TZAI YUAN R401 061G0402392 JT R

Page 48

52 C428 065G040222031J Y CAP CHIP 0402 22P 50V NP0 +/-5% C426 065G040222031J Y CAP CHIP 0402 22P 50V NP0 +/-5% C182 065G040222031J

Page 49

6 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 fron

Page 50

7 1. AC port 2. VGA 3. DVI (available for selected models) 4. HDMI(available for selected models) 5. Audio(available for selected models) To

Page 51

8 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 nav

Page 52

9 Luminance 1 Press (Menu) to display menu. 2 Press - or + to select (Luminance), and press to enter. 3 Press - or + to select submenu, an

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