SERVICE MANUAL FTD-G731AS FTD-G731AS/BK THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.
BUFFALO Service Manual Table of Contents Table of Contents ------------------------------------------------------------------------------ 02 Revision List -------------------------------------------------------------------------------------03 1 . M o n i t o r Sp e c i f i c a t i o n - - - - - - -- - - - - - -- - - - - --- - - - - - -- - - - - --- - - - - - -- - - - -- -- - - - - - -- - - - -- -- - - - - - 0 4 2 .
BUFFALO Service Manual Revision List Revision Date Change Description TPV model name Nov-01-04 Initial release Mar-13-06 Change the Main Board T780KA4NJSB1A/T780KA4NJSB2A...
BUFFALO Service Manual 2.LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an inverter/power board, an audio board, keypad board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
BUFFALO Service Manual 3. OPERATING INSTRUCTIONS 3.1 GENERAL INSTRUCTIONS Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
BUFFALO Service Manual 3.3 ADJUSTING THE PICTURE Steps: 1.Press MENU button to display OSD main menu, Press Left button or Right button may select other main Menu. 2. Press MENU button to adjust items of each main menu. 3. Press Left button or Right button may select item you wish to enter.
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BUFFALO Service Manual Main Menu Item Sub Menu Item Sub Menu Icon Description Auto Auto adjust color Recall Color Temperature from Color Temp EEPROM Color Red Setting Red Gain from Digital-register Green Setting Green Gain from Digital-register Blue Setting Blue Gain from Digital-register...
BUFFALO Service Manual 5. SOFTWARE FLOW CHART 1. Initialize MCU settings, including I/O, Timer, ISR and Serial Port settings. 2. Read EEPROM content to recover monitor settings, including brightness, contrast, color temperature and OSD position etc. 3. Initialize system variable, including system flag, OSD timeout counter, burin mode status…...
BUFFALO Service Manual 6.2 Introduction of main IC TSU16AK-LFT: the MST8111B is a high performance, and fully integrated graphics processing IC solution for LCD monitors with resolutions up to XGA. It is configured with an integrated triple-ADC/PLL, a high quality scaling engine, an on-screen display controller, a built-in output clock generator, and LVDS display interface.
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BUFFALO Service Manual BA9741F: PWM control, voltage range for working: 3.6~35V, Has such functions as short-voltage protection, Over-voltage protection, over-current protection and etc. The function of each pin and the circuit diagram inside are as follows: NAME FUNCTION NAME FUNCTION...
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BUFFALO Service Manual TDA7496: It is a stereo 2W+2W class AB power amplifier assembled, specially designed for high quality sound, TV and Monitor applications. It include linear volume control, Stand-by and mute functions, the function of each pin and the circuit diagram inside are as follows:...
BUFFALO Service Manual 7.Trouble Shooting 7.1 Main board No power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the power section Measure U201 PIN2=2.5V U202 PIN2=3.3V...
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BUFFALO Service Manual No picture (LED orange) No picture The button if under control Check X601 oscillate Correspondent waveform is normal component. Measure U202 PIN2=3.3V Replace U601 U201 PIN2=2.5V Check Correspondent component X401 oscillate waveform is normal Check Correspondent component...
BUFFALO Service Manual White screen White screen Measure Q204 base is high level? Measure U202 PIN2=3.3V U201 PIN2=2.5V Check Q203 is broken Check Correspondent or CN503 solder? component X401 oscillate waveform is normal Check Correspondent component Check Correspondent component Replace PANEL...
BUFFALO Service Manual 7.2 PWPC board No Power No power Check AC line volt 110V or 220V Check AC line Check the voltage of C905(+) Check F901, bridge rectified circuit Check start voltage for the pin3 of IC901 Check R906, R907, IC901...
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BUFFALO Service Manual No Backlight Check C223 (+) =12V Check F902 Check D201/Q209/Q210 Check D202/Q211/Q212 Check ON/OFF signal Check Interface board Check U201 pin9=12V voltage Change Q201 or Q207 Check the pin10/Pin7 of U201 have saw tooth Short Q203/Q204 if the picture normal...
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BUFFALO Service Manual 9.BOM LIST T780KA4NJSB1A Location Part No. for TPV Description Quan. Unit AUPC780ML AUDIO BOARD CBPC780KA4MC CONVERSION BOARD KEPC780KMN KEY BOARD FOR T780K*NMV PWPC7425A3M2 POWER BOARD 15G5786 1 VRSA BRACKET 15G5908 2 BRACKET 15G6090 7 MAIN FRAME 34G1272 Y 5L...
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BUFFALO Service Manual Q1G 330 8120 SCREW 3X8mm Q1G 330 10120 SCREW FOR FP/RC Q1G 330 12120 SCREW 3X12mm 705L780KB34 65 BEZEL ASS'Y 750GLU70G01 1 AU 17" V5(V1) PANEL AM1G1740 10120 SCREW(M4*8) T34G1455 Y L BASE AUPC780MCSMT AUDIO BOARD FOR SMT...