Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. Safety Precautions 1-1-1 Warnings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power and DC power jack before servicing.
Servicing Precautions An electrolytic capacitor installed with the wrong polarity might explode. WARNING: Before servicing units covered by this service manual, read and follow the Safety Caution: Precautions section of this manual. If unforeseen circumstances create conflict between the following servicing precautions Note: and any of the safety precautions, always follow the safety precautions.
1-4 Installation Precautions . For safety reasons, more than two people are required for carrying the product. 2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. 3. Do not place the product in areas with poor ventilation such as a bookshelf or closet.
2 Product Specifications 2-1 Fashion Feature WXGA Display (1680 x 1050) - Black Color Variation 2-2 Specifications Features Specifications Maximum resolution 1680(H)*1050(V) Back light system 4 CCFL (top & bottom edge side) Actual Resolution display WSXGA+(1680x1050) Pixel pitch 0.282(H) x 0.282(V) Display area 473.76 ( H ) x 296.1 ( V ) , 22”...
3 Alignments and Adjustments This section of the service manual explains how to use the DDC Manager JIG. This function is needed for AD board change and program memory (U105) change. 3-1 Required Equipment The following equipment is necessary for adjusting the monitor: - Computer with Windows 95, Windows 98, Windows 2000, Windows XP, or Windows NT.
3-4 EDID table Byte(Hex) Field Name and Comments Description EDID 00~07h Head Information 00,FF,FF,FF,FF,FF,FF,00 08~09h ID Manufacturer Name 4C,2D 0A~0Bh Product ID Code 031F 1F,03 0C~0Fh Last 5 Digits of Serial Number XXXXXXXXXX Week of Manufacture Year of Manufacture 2007 EDID Version Number EDID Revision Number Analog Signal Level...
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640 x 480 @ 67Hz 640 x 480 @ 72Hz 640 x 480 @ 75Hz 800 x 600 @ 56Hz 800 x 600 @ 60Hz 800 x 600 @ 72Hz 800 x 600 @ 75Hz 832 x 624 @ 75Hz 1024 x 768 @ 87Hz(I) (N/A) Established Timing II 1024 x 768 @ 60Hz...
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Byte(Hex) Field Name and Comments Description EDID 00~07h Head Information 00,FF,FF,FF,FF,FF,FF,00 08~09h ID Manufacturer Name 4C,2D 0A~0Bh Product ID Code 0320 20,03 0C~0Fh Last 5 Digits of Serial Number XXXXXXXXXX Week of Manufacture Year of Manufacture 2007 EDID Version Number EDID Revision Number Analog Signal Level 0.700, 0.000 (0.700Vp-p)
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832 x 624 @ 75Hz 1024 x 768 @ 87Hz(I) (N/A) 1024 x 768 @ 60Hz 1024 x 768 @ 70Hz 1024 x 768 @ 75Hz 1280 x 1024 @ 75Hz 1152 x 870 @ 75Hz 800 x 600 @ 85Hz (N/A) 1024 x 768 @ 85Hz (N/A) 1280 x 1024 @ 60Hz (N/A) Manufacturers Reserved Timings...
3-5 How to execute DDC 1. Install Analog DVI EDID Tool Program 2. Click the Analog DVI EDID Tool icon. 3. Then Select the model which you want to write EDID. 4. Select VGA EDID or DVI EDID: Click `Setting' --- `Config File'...
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5. Write EDID: Select “File”- “Auto Write” to enable EDID Writing. It will auto write when you enter a S/N which i Successful EDID written when it shows‘PASS’ Logo...
3-6 How to execute MCU Code 1. Set the options. -. Manufacture : MSTAR -. Device Type : TSUM16_ROM128K_ext_flash -. Communication Port : DSUB15 (Analog) -. External Memory: PM25LV010E 5. If Program and Verify is OK, turn off the hard power and than turn on again.
4 Troubleshooting 4-1 Common Acknowledge If you change the interface board, be sure that the U104 and U105 these two components also changed to the new I/F board because there was program inside. If not, please re-write EDID or upload firmware into Flash memory via VGA Cable.
9 Operating Instructions and Installation 9-1 Front 3. Volume button 1. Menu button When OSD is not on the screen, push the button Opens the OSD menu. Also use to exit the OSD menu or return to the previous menu. 2&3.
9-2 Rear 1. Power port Connect the power cord for your monitor to the power port on the back of the monitor. 2. D-sub 15-pin port Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor. 3.
9-5 Attaching a Base - This monitor accepts a 100mm x 100mm VESA-compliant mounting interface pad. A. Monitor B. Mounting Interface Pad 1. Turn off your monitor and unplug its power cord. 2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen. 3.
10 Disassembly and Reassembly 10-1 Disassembly Block LE 2294 LCD Monitor BASE*1 RUBBER FOOT*4 ASSY BASE*1 SCREW,MINUS,M4*8,Zn* SCREW M4*10, *3 STAND_BACK*1 HINGE *1 SCREW M4*10 *3 ASSY STAND*1 STAND_FRONT*1 ASSY BACK COVER*1 BACK COVER*1 CHASSIS *1 BKT-VESA *4 MYLAR TRANSPARENT*2 Power Board *1 SHIELDING*1 ASSY...
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1.unscrew the manual scerw and remove the base 2.unscrew the stand screws and remove the stand 3.Lift the back cover and use jig remove the lamp shielding 4.Disconnect lamp wire and earphone wire...
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5.Tear the adhesive tape and disconnect keypad wire 6.Disconnect the speaker and LVDS wire 7.Remove chassis assembly and lift up the panel...
12 Circuit Descriptions 12-1 Overall Block Structure 12-1-1 Power Tree 1. When the AD board is in DPMS state: 1.1 The IP has been designed so that it operates with a power consumption of less than 0.8W of. 1.2 The Scaler consumes power up to 37mA 1.3 The power to the panel is switched off 2.
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12-1-2 Main board Parts TSUM16AWK-LF-1 Display Response LVDS Processing Time Panel (PC)ANALOG Engine Enhancement Interface Single Interface SDRAM Engine HSYNC Clock Generator Function Key 14.318MH 24C04 Flash EEPROM 1.8V 3.3V Regulator Regulator IP Board Regulator 1. Inverter: A conversion device that converts DC rated voltage/current to high ones necessary for the panel lamp.
12-2 IP Board Part(Power) Schematic Diagrams Power Switching Mode Power Supply 1.1 AC Current Input Circuit P801 is a connector for connecting AC Power. F801 is a fuse to protect all the circuit. AC input voltage is from 90v to 264V. R801 and R802 joined between two inputting main circuit to prevent man from shock.
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Pin R of IC803 is supplied 2.5-v stable voltage. It connects to 5V and 14V output through R822, R823 and R824. R822, R823 and R824 are output sampling resistor. When the sampling voltage more than 2.5V or less than 2.5V, current of FB IC802 will change, this can change the voltage from T801. 12-3 IP Board Part(Inverter Part) Inverter Circuit 1.
13 Reference Information 13-1 Technical Terms -TFT-LCD -FINE The "Fine" adjustment is used to adjust visibility by Thin film Transistor Liquid Crystal Display controlling phase difference. -ADC(Analog to Digital Converter) This is a circuit that converts from analog signal to -COARSE digital signals.
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-Vertical Frequency The screen must be redrawn several times per sec- ond in order to create and display an image for the user. The frequency of this repetition per second is called Vertical Frequency or Refresh Rate. Unit: Hz Example: If the same light repeats itself 60 times per second, this is regarded as 60 Hz.
13-2 Pin Assignments Sync 15-Pin D-Sub Signal Cable Connector Type Separate Sync-on-green Pin No. Green Green + H/V Sync Blue Blue DDC Return(GND) DDC Return(GND) GND-R GND-R GND-G GND-G GND-B GND-B Cable Detect Cable Detect Bi-Dr Data (SDA) Bi-Dr Data (SDA) H-Sync Not Used V-Sync...
13-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer- generated video signals. Through D-SUB connectors, this unit can support FH= 30~81 KHz, Fv=56~75Hz and WXGA+ display modes as below: Table 1.