Sharp DV-NC100X Service Manual

Also see for DV-NC100X: Operation manual

1-10-11 H9745TSFLOW CHART NO.10Video E-E does not appear.Is the Video signal inputted to Pins(34,36,38) ofIC301?1) In the external input mode2) In the U/V tuner modeCheck the line between the video inputterminal (rear) and Pin(38) of IC301, andservice it if defective.Check the line between the video inputterminal (front) and Pin(34) of IC301, andservice it if defective.Check the line between Pin(24) of the U/V tunerand Pin(36) of IC301, and service it if defective.YesYesYesNoYesYesYesYesYesNoYes NoNoNoNoNoNoNoIs the C-SYNC signal outputted to Pin(28) of IC301?Is the C-SYNC signal inputted to Pin(58) of IC501?Is the video signal outputted to Pin(4) of IC751?Is the "L" pulse inputted into Pins(9,10,11) of IC751?YesReplace IC751.Replace IC501.Is approximately 5V voltage supplied to Pin(16)of IC751, or approximately -6V voltage supplied toPin(7) of IC751?Is 5V voltage supplied to Pins(16,40) of IC301?Is the serial data and clock signalsupplied to Pins(23, 24) of IC301?Check the P-ON+5V line and AL+5V line,and service it if defective.No Check the AL+5V line and theAL-30V line (R760,R761), and service it if defective.Check the line between Pin(28)of IC301 and Pin(58) of IC501,and service it if defective.Check the line between Pins(23, 24) of IC301and Pins(71, 72) of IC501, and service it ifdefective.Check the line between Pin(4) of IC751and Q305, and service it if defective.Check the line between Pin(29) of IC301 andPin(5) of IC751, and service it if defective.When only Line signal is not outputted...check the line between the emitter of Q305 and thevideo output terminal (JK751), and service it ifdefective.When only RF signal is not outputted...check the tuner (TU701), and the line between theemitter of Q305 and Pin(6) of the tuner, andservice it if defective.Is the video signal inputted into Pin(5) of IC751?Is the video signal outputted to the emitter of Q305?Replace IC301.