1 Precautions 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.
1 Precautions 1-2 Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
1 Precautions 1-4 Installation Precautions 1. For safety reasons, more than two people are 6. Keep the antenna far away from any high-voltage required for carrying the product. cables and install it firmly. Contact with the high- voltage cable or the antenna falling over may 2.
10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front 1. Menu button For documentations or works involving heavy text. Opens the OSD menu. Also use to exit the OSD menu or return to the previous menu. 3) Internet : Medium brightness For working with a mixture of images such as text 2.
10 Operating Instructions and Installation 4. Enter button / Source button 6. Power button / Power indicator Activates a highlighted menu item. / Use this button for turn the monitor on and off. Push the 'SOURCE', then selects the video signal /This light glows green during nomal operation, while the OSD is off.
10 Operating Instructions and Installation 10-3 Connecting the monitor Rear of monitor New Model Macintosh Rear of Computer Old Model Macintosh 1. Connect the power cord for your monitor to the power port on the back of the monitor. Plug the power cord for the monitor into a nearby outlet. 2-1.
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10 Operating Instructions and Installation 10-3-1 Connecting Digital DVD ¡Ø The monitor has DVI IN connection terminals to connect DVI input devices digital DVD. 1. Input devices such as digital DVD are connected to the DVI IN terminal of the monitor using the DVI cable.
10 Operating Instructions and Installation 10-5 Attaching a Base - This monitor accepts a 75mm x 75mm 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.
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly (Simple - Stand) Cautions: 1.
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11 Disassembly and Reassembly 3. Lift up the back cover and Use the jig to remove the shield lamp. 4. Disconnect cables. 5. Lift up the shield and disconnect LVDS cable. 11-2...
11 Disassembly and Reassembly 6. Lift up the LCD panel. 11-2 Disassembly (HAS-Stand) 1. Place monitor face down on cushioned table. Remove 2 screws from the stand and remove front cover. 11-3...
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11 Disassembly and Reassembly 2. Lift up the back cover and Use the jig to remove the shield lamp. 3. Disconnect cables. 4. Lift up the shield and disconnect LVDS cable. 11-4...
11 Disassembly and Reassembly 5. Lift up the LCD panel. 11-3 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. 11-5...
13 Circuit Descriptions 13 Circuit Descriptions 13-1 Overall Block Structure Power Tree 13-1-1 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 0.6W 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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13 Circuit Descriptions Main Board Parts 13-1-2 1. Inverter: A conversion device that converts DC 6. Scaler & EEPROM: I2C is a two-way serial bus rated voltage/current to high ones necessary of two lines that supports communications for the panel lamp. across the integrated circuits as well as between FLASH and EEPROM.
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13 Circuit Descriptions 13-1-3 IP BOARD BLOCK(POWER) Parts 13-1-4 IP BOARD BLOCK( INVERTER ) Parts I P BO A RD BO A RD B LO C K B LO C K ( I N V N V ERT ER ERT ER ) I N V ERT V ERT ER ER PA RT...
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13 Circuit Descriptions 13-1-5 IP BOARD ( inverter ) PROTECTION Parts BIZET INVERTER CONTROLER FAN7310 have 2-way of the PROTECTION MODE. 1. OVP[Over Voltage Protection] : If the Voltage of the series capacitors C10 & C15 is over the 2.0V, the Inverter latched-off.[See the Picture1] 2.
13 Circuit Descriptions 13-2 Trouble Shooting 13-2-1 IP BOARD(Power) Power On Change FUSE Check fuse 3 pin of FDM0565R Check the Vcc system Vcc system in normal: HIGH 1 pin of FDM0565R Check the drain system Check the main switching Normal: Switching Check the Check the...
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13 Circuit Descriptions 13-2-1 IP BOARD(Inverter) Power On Check the power system Check the IC drive 1 and 2 pins of FDM0565R Check MOSFET Check Protection Normal:0.6V~0.8V 1 and 2 pins of FDM0565R Check the OVP and OLR Check Protection circuits Normal:0.6V~0.8V Check any dimming...
14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms -TFT-LCD -FINE Thin film Transistor Liquid Crystal Display The "Fine" adjustment is used to adjust visibility by 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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14 Reference Infomation -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.
14 Reference Infomation 14-2 Pin Assignments Sync 15-Pin D-Sub Signal Cable Connector Type Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync. Blue Blue Blue DDC Return (GND) DDC Return (GND) DDC Return (GND) GND-R GND-R GND-R GND-G GND-G GND-G GND-B...
14 Reference Infomation 14-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer- generated video signals. Table 1. Timing Chart VESA Mode VGA2/ VGA3/ 640/75 Hz 800/60 Hz 800/75 Hz 1024/60 Hz 1024/75 Hz 1280/60 Hz...
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14 Reference Infomation Table 2 . Timing Chart Mode 1440/75 Hz 1440/60 Hz 1440x900 1440x900 Timing fH (kHz) 55.935 70.635 A μsec 14.157 17.878 B μsec 1.427 1.112 C μsec 2.178 1.814 D μsec 10.530 13.521 E μsec 0.751 0.702 fV (Hz) 59.887 74.984...
14 Reference Infomation 14-4 Preset Timing Modes -If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on.
3 Alignments and Adjustments 3 Alignments and Adjustments This section of the service manual explains how to use the RS232 JIG. This function is needed for AD board change and program memory (IC110) change. 3-1 Required Equipment The following equipment is necessary for adjusting the monitor: Computer with Windows 95, Windows 98, or Windows NT.
3 Alignments and Adjustments 3-6 Service Function Spec. 3-6-1 How to Display Service Function OSD 1. The value for brightness and contrast should be changed to zero. 2. Within 5 seconds, press the (Enter/Source) key. 3. Service function OSD will be displayed. If you want to disable the service function OSD, you will have to power off.
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3 Alignments and Adjustments 3-6-3 How to Control Service Function OSD After change the panel or lamp, you must reset service function OSD. The case of panel change After changeing the panel, press the menu key within 5 seconds,. Then, panel Ch. No increases one step and the panel time information is reset to zero. Simultaneously, other information is reset to zero (Upper/Lower lamp, Panel cycle).
3 Alignments and Adjustments 3-7 How to execute DDC 1. Open file. 2. Select Port #1. 3. Select DDC file. 4.Click, "Next" Button 5. Type in the monitor serial number and press Enter. *Repeat this step 2 to 5 times in digital inputs after the analog input.
4 Troubleshooting 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC 's display as below. • Resolution: 1440 x 900 • H-frequency: 56 kHz • V-frequency: 75 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3.
4 Troubleshooting 4-2 No Video (ANALOG) Check signal cable connection and power. X1 oscillate proprely? Replace or check related circuit. Is there R,G,B input at Check input part. R111,R114 and R118? Is there Hsync, Vsync waveform Check IC604 and related circuit. at Pin 32,33 of IC604? Does the output signal appear Check CN400 and related circuit.
4 Troubleshooting 4-3 No Video (DIGITAL) Check signal cable connection and power. Replace or check related circuit. X1 oscillate properly? Is there R, G, B input at Check input part. R100,R101,R102,R106 and R108? Does the output signal appear Check IC400 and related circuit. at Pin 17~20, 22~27 of CN400? Check the PANEL_EN signal at R222...
6 Exploded View & Parts List 5 Exploded View and Parts List -You can search for updated part codes through ITSELF web site. URL : http://itself. sec. samsung.co.kr 5-2 LHA19BS Exploded View(LOWEST HAS STAND TYPE) M0215 M0006 T0003 M0014 M0013...
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5 Exploded View & Parts List - Parts list Location Code.No Item & Specification Q'ty SA/SNA Remark T0003 BN96-03337A ASSY COVER P-FRONT;LS19HAW (940BW),ABS H M0112 BN63-02515A COVER-FRONT;S/M 940BW,ABS,HB,BK24 S.N.A T0022 BN64-00377A KNOB CONTROL;HA17TS,PC CLEAR+SMOG,T2.1,9 S.N.A M0145 BN96-03255A ASSY BOARD P-FUNCTION;Mendel,CT5000-4030...