Service manual

ManualsBrandsAOC ManualsLED displaysE2450SWDA

23.6" LCD Monitor AOC e2450Swdak

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

UNIT WHEN S

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

6.Schematic…………..….........................................30

6.1.Main Board..…….…...........................................30

6.2.Power Board..……….........................................35

6.3.Key Board..……….........................................37

7.PCB Layout..………..............................................38

7.1.Main Board………..…........................................38

7.2.Power Board….…..............................................40

7.3.Key Board………..…..........................................42

8.Maintainability………............................................43

8.1.Equipments and Tools Requirement…...............43

8.2.Trouble Shooting…..………...............................44

9.White-Balance,Luminance Adjustment…..............48

10.Monitor Exploded View……................................50

11.BOM List…………..……………………….............51

Summary of content (60 pages)

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23.6" LCD Monitor AOC e2450Swdak 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 1.Monitor Specification..............................………............4 2.
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Revision List Version Release Date Revision History TPV Model Name TDC2N26BAHA1DNE A00 Aug.
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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.
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1.
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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. Monitor Block Diagram LED Drive.
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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. * Press the power button to turn on the monitor. The power indicator will light up. 3.2 Control Buttons and Connections Power Press the Power button to turn on/off the monitor.
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1. Power 2. Analog (DB-15 VGA cable) 3. DVI 4. 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. 3. Connect one end of the DVI cable to the back of the monitor and connect the other end to the computer‟s DVI port.
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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. 3) Press - or + to change the settings of the selected function. Press AUTO to exit.
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Luminance 1 Press (Menu) to display menu. 2 Press or to select (Luminance), and press to enter. 3 Press or to select submenu, and press or to adjust. to enter.
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5 Press two times to exit.
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Image Setup 1 Press (Menu) to display menu. 2 Press or to select (Image Setup), and press to enter. 3 Press or to select submenu, and press or to adjust. to enter.
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5 Press two times to exit.
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Color Setup 1 Press (Menu) to display menu. 2 Press or to select (Color Setup), and press to enter. 3 Press or to select submenu, and press or to adjust. to enter.
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5 Press two times to exit.
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Picture Boost 1 Press (Menu) to display menu. 2 Press or to select (Picture Boost), and press or to select submenu, and press or to adjust. 3 Press to enter. 4 Press 15 to enter.
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5 Press two times to exit.
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OSD Setup 1 Press (Menu) to display menu. 2 Press or to select (OSD Setup), and press or to select submenu, and press or to adjust. 3 Press to enter. 4 Press 17 to enter.
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5 Press two times to exit.
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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 to enter.
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Press or to adjust. 5 Press two times to exit.
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Exit 1 Press (Menu) to display menu. 2 Press or to select (Exit), and press to enter.
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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 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); the actual shutdown time depends on your preferences (see example below). Please click on "driver/e-Saver/setup.
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Question e-sensor no power interface show e-sensor Answer 1. Into the factory mode，set Burn in to OFF; 2. Set e-sensor to ON. The detecting range is too near or far and the User is far away the monitor, reset the examination area. 1. Please do not block the e-Sensor on the LOGO, which is located on it can’t your monitor to turn off or dark while you are away the left of AOC logo. 2. The detecting range is too far or the things blocks monitor , reset the examination area.
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4. Input/Output Specification 4.
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4.
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4.3 Panel Specification 4.3.1 General Features TPM236WU-110 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 23.6 inchdiagonally measured active area with FHD resolutions (1920 horizontal by 1080 vertical pixel array). Each pixel is divided into RED, GREEN, BLUE dots which are arranged invertical stripe and this module can display 16.7M colors.
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2.Duration of rush current is about 2 ms and rising time of VDD is 520 μs ± 20 % LED array electrical characteristics Ta = 25 ±2℃ Note (1) LED light bar input voltage and current are measured by utilizing a true RMS multimeter as shown below: (2) PBL = IPIN × VPIN × ( 8 ) input pins , LED light bar circuit is ( 9 )Series, ( 8 )Parallel.
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5. Block Diagram 5.1 Main Board 04.SCALER 02.INPUT +5V EDID_WP +5V EDID_WP R0+ R0SOG_DET G0+ G0B0+ B0AHS0 AVS0 DDCSDA1 DDCSCL1 VGA_CABLE_DET R0+ R0SOG_DET G0+ G0B0+ B0AHS0 AVS0 DDCSDA1 DDCSCL1 VGA_CABLE_DET R0+ R0SOG_DET G0+ G0B0+ B0AHS0 AVS0 VCC3.3 DDCSDA1 DDCSCL1 PA[0..9] VCC1.8 +5V VCC1.8 +5V 05.PANEL INTERFACE PA[0..9] PA[0..9] VGA_CABLE_DET 02.D-SUB INPUT PB[0..9] EDID_WP VCC3.3 PB[0..9] PB[0..9] EDID_WP P_SCL P_SCL P_SDA P_SDA VLCD VLCD 05.PANEL INTERFACE 03.
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5.2 Power Board EMI filter Bridge Rectifier and Filter Transformer (T901) Rectifier diodes 14.5V 5V Start Resistor (R908,R911) Feedback PWM Control LD7576AGR (U901) Circuit Power Switch (Q901) Photo coupler Regulator (U902) 14.
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6. Schematic DDCSCL1 R101 DDCSCL_A 100R 1/16W 5% VSIN0 5 DDCSCL1 14 13 DDCSDA1 R106 DDCSDA_A 100R 1/16W 5% 5 DDCSDA1 DET_VGA D-SUB 15P 10 5 9 4 8 3 7 2 6 1 15 HSIN0 CN101 12 11 R102 100R 1/16W 5% VGA_CABLE_DET VGA_CABLE_DET 5 VGA_5V VGA_5V BIN0BIN0 GIN0GIN0 RIN0RIN0 R103 0R05 1/16W BIN0 ZD101 RLZ5.6B R104 0R05 1/16W 5PF 50V C103 16 6.
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26 25 GND GND 18 17 10 9 2 1 13 12 5 4 21 20 23 24 1K 1/16W 5% U104 NC Q101 CH1 CH4 VN VP CH2 CH3 6 5 4 ESD_DVI ESD_DVI 2 1 D102 BAV70 R134 R135 R136 R137 R138 R139 10R 10R 10R 10R 10R 10R 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 5% 5% 5% 5% 5% 5% RX0+ RX0RX1+ RX1RX2+ RX2- 5 5 5 5 5 5 8 7 6 5 DDCSCL2 5 DDCSDA2 5 EDID_WP DCLK+ DCLK- ESD_DVI ESD_DVI C116 U105 C115 RLZ5.
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PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9 C403 100N 16V R402 R403 LVB3P LVB3M LVBCKP LVBCKM LVB2P LVB2M LVB1P LVB1M LVB0P LVB0M 1 3 5 7 NC/2K2 1/16W 5% NC/2K2 1/16W 5% 2 4 6 8 VCC3.3 CN401 NC/8PIN VCC3.3 C421 4.7UF 10V C0805 C418 100N 16V C419 100N 16V RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- 3 AHS0 3 AVS0 C422 100N 16V 3 SOG_DET 3 G0+ 3 G0- C423 4.
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PA[0..9] PB[0..9] 5 PB[0..
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+5V +5V VCC3.3 C701 R702 4K7 1/16W 5% +5V 4 INPUT OUTPUT 4 FB701 0 OHM +-5% 1/8W 2 1 ADJ/GND + VCC3.3 5 100N 16V C704 3,4,5 +5V DIM ON/OFF AZ1117H-3.3TRG1 100uF16V C702 NC/CONN VCC3.3 U701 3 C703 100N 16V 6 5 4 3 2 1 100N 16V +5V 3,4,5 CN701 R703 9 8 7 6 5 4 3 2 1 100R 1/16W 5% Adj_BACKLIGHT 5 + C706 U702 VCC3.
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6.2 Power Board 715G4744P02000001M ! 1 R929 100 OHM 1/4W C916 R930 100 OHM 1/4W 2N2 500V C928 2N2 500V F801 0R05 1/4W +14.
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FB802 D801 L801 1 2 1 2 +14.5V 10 OHM 1/8W 47UH BEAD 8 7 6 5 Q801 C814 100N 50V APM8005KCTRG SK310B C810 0.47UF 50V S1 G1 S2 G2 R801 10K 1/8W 1 2 3 4 + R814 10 OHM 1% 1/4W C809 2 ON/OFF R805 FB801 BEAD 1 R818 10K 1/8W DIM R806 C803 1N 50V C815 CN801 VIN VREF STATUS LDR SSTCMP ISW PWM ENA ISEN1 RT ISEN2 OVP GND ISET ISEN3 ISEN4 1 OHM +-5% 1/8W R808 1 OHM +-5% 1/8W C808 100PF 500V 8 7 6 5 4 3 2 1 R817 100 OHM 1/4W 6 5 4 3 2 1 R816 7.5K OHM 1% R812 0.
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6.3 Key Board 715G4747K02000001C 1 3 LED001 UB 2 SUR CN001 1 2 3 4 5 6 LBADC1 LBADC2 DC_POWERON LED_1# LED_2# C001 C002 NC/0.1uF 50V NC/0.1uF 50V R001 2KOHM 1% 1/10W R002 0R01 1/10W R003 R004 2KOHM 1% 1/10W 1K 1/10W SW005 SW LBADC1 SW004 SW POWER MENU SW003 SW SW002 SW SW001 SW AUTO(2.0K) 1.118V UP LBADC2 UP SGND DOWN AUTO Wire Harness (0) 0V DOWN(2K) 1.118V MENU(1K) 0.
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7. PCB Layout 7.
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7.
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7.
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8. Maintainability 8.1 Equipments and Tools Requirement 1. Voltmeter. 2. Oscilloscope. 3. Pattern Generator. 4. DDC Tool with an IBM Compatible Computer. 5. Alignment Tool. 6. LCD Color Analyzer. 7. Service Manual. 8. User Manual.
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8.2 Trouble Shooting 1.
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2.
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3.
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4.
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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 . 1. Setting the color temp. A. 6500K: x=313±20 ，y=329±20 Warm color temp. parameter is B. 7300K Normal color temp.
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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±20，y=297±20 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN on factory window until chroma 7120 indicator reached the value G=100 6.
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10.
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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.com.cn/hello1.asp for the latest information. TDC2N26BAHA1DNE Location HDCP-SMT E07801 E08904 E08902 E08903 E08901 ECN804 E750 E750 M05201 M05203 M05202 Part No.
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E09501 U402 SMTCA-U402 CN402 CN701 CN408 R707 CN101 CN102 X401 LED001 CN001 GND1 CN602 U902 U601 NR901 C908 C900 C907 C907A C809 C921 C931 C922 C918 L901 L907 L906 L801 T901 CN901 CN601 BD901 D901 D909 D905 CN902 CN804 C705 C702 S95G179T30PE38 H40G000261553A 756GHBCB A5061 056G2233 11 100GANMD009W11 033G3802 6B Y L 033G3802 9B Y L 033G801930F CH L 061G152M47964L SY 088G 35315FVXH 088G 35424FVXH 093G 2251BCEC 709G4502 HM001 H40G 45762429A 081G 12 1F GH 095G820H 6TE10 709G4747 HM001 009G6005 1 033G3802 4B
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C433 C716 C710 R002 R004 R003 R001 Q901 HS1 U901 U801 Q607 Q608 Q801 R612 R601 R602 R603 R609 R610 R613 R604 R605 R606 R607 R811 RJ801 R804 R806 R907 R801 R818 R918 R928 R805 R807 R808 R815 R935 R916 R810 R920 R919 R803 R802 R809 R816 067G 3051013PB 067G 3051013PB 067G 3051013PB 061G0603000 FF 061G06031001FF 061G06032001FF 061G06032001FF 057G 667941 090G6064 1 0M1G 930 8120 055G 23524 Q51G 6 4509 Q55G 100625 056G 379529 056G 700 11 057G 417517 057G 417518 057G 763 92 061G0603102 JT 061G0603103 JT 061G0603
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R905 R925 RJ603 RJ605 RJ604 RJ803 RJ608 RJ606 F801 RJ602 R917 R814 R930 R929 R912 R910 R909 R903 R911 R908 R913 R813 R812 R923 R902 R901 R900 R817 C614 C612 C605 C608 C609 C619 C620 C621 C617 C618 C622 C611 C610 C602 C601 C603 C606 C812 C813 C923 C914 C906 C815 061G0805471 JT 061G08059101FF 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206000 JT 061G1206100 JT 061G12061009FF 061G1206101 JT 061G1206101 JT 061G1206101 JT 061G1206101 JT 061G12061
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C803 C802 C915 C814 C924 C912 C926 C806 C807 C811 C810 C804 C808 C929 C928 C917 C916 FB605 R608 FB604 FB602 FB603 D801 SW004 SW005 SW001 SW002 SW003 E715 CN901 IC903 Q904 R915 R906 R904 R924 C911 C805 C902 C903 C927 C816 C920 C801 C913 C604 C613 J613 FB901 FB902 065G080510232K Y 065G080510332K Y 065G080510332K Y 065G080510432K F 065G080510432K F 065G080510432K Y 065G080510432K Y 065G080522432K Y 065G080522432K Y 065G080547432K T 065G080547432K T 065G080547432K T 065G120610171J Y 065G120622272K Y 065G120622
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FB903 FB801 FB802 F903 F902 F901 ZD901 D907 D601 J906 J905 J904 J903 J902 J901 J815 J814 J813 J812 J607 J606 J604 J603 J602 J601 J921 J910 J909 J907 J611 J612 J908 J609 J610 J608 J811 J801 J802 J803 J804 J805 J806 J807 J808 J809 J810 E715 E715 D903 D904 071G 55 29 071G 55 29 071G 55 29 084G 56 4 B 084G 56 4 B 084G 56 4 B 093G 39A6852T 093G 6452452T 093G 6452452T 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095G 90 23 095
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U703 U401 U701 U106 U107 U104 U102 U103 U101 U105 U402 Q401 Q402 Q701 Q706 Q705 R711 R453 R410 R409 R407 R406 R118 R117 R110 R109 R104 R103 R141 R140 R139 R138 R137 R136 R135 R134 R124 R127 R128 R129 R431 R434 R439 R703 R712 R798 R101 R102 R105 R106 R108 056G 133 33AAC 056G 562369 056G 563514 056G 662 52 056G 662 52 056G 662 52 056G 662 52 056G 662 52 056G1133 34 1 056G1133 34 1 056G2233 11 057G 417517 057G 417517 057G 417518 057G 417518 057G 763940 061G0402000 JT 061G0402000 JT 061G0402000 JT 061G0402000
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R111 R113 R119 R121 R123 R488 R487 R424 R130 R799 R714 R704 R444 R429 R427 R425 R415 R422 R715 R432 R125 R126 R411 R413 R719 R701 R454 R133 R116 R416 R423 R405 R404 R401 R419 R408 R142 R114 R115 R131 R132 R702 R721 R120 R112 R107 R122 R417 R418 FB701 R726 061G0402101 JT 061G0402101 JT 061G0402101 JT 061G0402101 JT 061G0402101 JT 061G0402102 JT 061G0402102 JT 061G0402102 JT 061G0402102 JT 061G0402103 JT 061G0402103 JT 061G0402103 JT 061G0402103 JT 061G0402103 JT 061G0402103 JT 061G0402103 JT 061G0402104 JT
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R448 R449 C120 C417 C418 C419 C422 C424 C425 C427 C434 C701 C703 C704 C706 C712 C713 C718 C113 C114 C115 C117 C118 C119 C402 C403 C415 C412 C411 C410 C409 C408 C405 C414 C181 C182 C426 C428 C715 C429 C116 C101 C110 C108 C107 C105 C104 C102 C103 C106 C109 061G1206301 JT 061G1206301 JT 065G040210232K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 065G040210412K 0
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C423 C421 C416 C413 C404 C401 FB407 FB409 FB401 FB404 FB405 FB408 D102 D101 ZD102 ZD101 E715 E715 065G0805475A2K Y 065G0805475A2K Y 065G0805475A2K Y 065G0805475A2K Y 065G0805475A2K Y 065G0805475A2K Y 071G 56K121 M 071G 56K121 M 071G 56V301 M 071G 56V301 M 071G 56V301 M 071G 56V301 M 093G 64 42 L 093G 64 42 L 093G 39GA01 T 093G 39GA01 T 709G4502 HS001 715G4502M01000004C 715G4502M01000004I H52G1701 1 NO-SUGGEST CAP 0805 4.7UF 10% 10V X7R NO-SUGGEST CAP 0805 4.7UF 10% 10V X7R NO-SUGGEST CAP 0805 4.