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This may happen when the Main Board is normal but the X, Y Main Board, Logic Board, or Y Buffer Board is out of order.
The output voltage of the Main SMPS or the DC-DC SMPS is out of order.
This may happen when the LVDS cable connecting the Main Board and the Logic Board is disconnected.When separating and connecting the cables such as CN809 of the Main SMPS, CN1, CN2, CN3, CN4 and CN5 of the DC-DC SMPS, CN of the X Main Board, and CN of the Y Main Board, a spark may be generated by the electric charge of the high capacity capacitor. Therefore, wait some time after separ ating the power cord from the unit.
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