Sharp DV-NC100X Service Manual

Also see for DV-NC100X: Operation manual

1-10-13 H9745TSFLOW CHART NO.13Hi-Fi audio can not be playbacked normally. (Hi-Fi E-E mode is normal.)FLOW CHART NO.14Hi-Fi audio can not be recorded normally in the linear audio mode. (E-E mode is normal.)Is the audio signal inputted into Pin(76) of IC301?Does the Bias oscillation circuit operate normally?Is the audio signal outputted to Pin(96) of IC301?Is the Playback Envelope signal outputted toPin(19) of IC451?Replace IC301.Is CN504 and the connected cable normal?Is the Hi-Fi-H-SW signal inputted into to Pin(35) of IC451?YesYesYesIs the audio signal outputted to Pin(7) of IC301?YesYesReplace ACE head.YesYes NoNoNoNoCheck the Hi-Fi-H-SW line betweenPin(35) of IC451 and Pin(19) ofIC501, and service it if defective.Check the line between Pin(53) of IC451 andPin(76) of IC301, and service it if defective.Check the Bias oscillation circuit (Q401,Q402,Q403,Q405) and service it if defective.ReplaceIC451.Replace IC451.NoReplace IC301.NoReplace CN504 and the connected cable.NoFLOW CHART NO.12Hi-Fi audio can not be recorded normally. (E-E mode is normal.)Is the REC FM signal outputted to Pin(26) of IC451?Is the line between Pin(8) of CN253 andPin(26) of IC451 normal?Replace the Cylinder Assembly.YesYesNo Replace IC451.No Check the line between Pin(8) of CN253 andPin(26) of IC451, and service it if defective.