4-1
4. Troubleshooting
4. Troubleshooting
4-1. Troubleshooting
Check the various cable connections first.
• Check to see if there is a burnt or damaged cable.
• Check to see if there is a disconnected or loose cable connection.
• Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
Check the Power input to the FRC(Frame Rate Conversion) Board.
Check internal Pattern both of FRC and FBE3 if there is some picture noise.
FRC: Factory mode(MUTE - BUTTON 1 - BUTTON 8 - BUTTON 2 - Power on) -> FRCM -> TP After DDR Press right
button of Remocon.
FBE3: Factory mode(MUTE - BUTTON 1 - BUTTON 8 - BUTTON 2 - Power on) -> FBE -> Patt Sel -> Press right
button of Remocon.
Case1: FBE3 ok,FRC NG: change the FRC Board Case2: FBE3 NG: change the main Board.
Check the LED lamp for source button on front.
If this LED blank 100mS frequently then FRC board is defective(communication problem via Main board)
in this case change the FRC board.
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Summary of Contents for LN52B750U1M
Page 7: ...1 4 1 Precautions Memo ...
Page 31: ...4 4 4 Troubleshooting WAVEFORMS 1 R G B Output Signal PC_R Signal PC_G Signal PC_B Signal ...
Page 33: ...4 6 4 Troubleshooting WAVEFORMS 1 Signal of HDMI Data 2 Digital Output Data ...
Page 37: ...4 10 4 Troubleshooting WAVEFORMS 1 AV_CVBS Output Signal ...
Page 39: ...4 12 4 Troubleshooting WAVEFORMS 1 I2C Data 3 Speaker out ...
Page 66: ...4 39 4 Troubleshooting 5 Press 0 6 Save latest BSP images to update folder in usb memory ...
Page 67: ...4 40 4 Troubleshooting 7 Enter bbm usb after connecting usb memory 8 Press 1 ...
Page 68: ...4 41 4 Troubleshooting 9 Enter u boot bin 10 Press x to return prompt menu ...