Kenwood KVT-719DVD Service Manual

Also see for KVT-719DVD: Instruction manual Training guide Installation manual Installation manual

Contents

43KVT-719DVD/729DVD/729DVDY/739DVD1. Flicker adjustment● Condition (As in the previous models)Video source: VIDEOVideo: Luster white 30%~50%BRIGHT: MAXMODEL: ZOOM● Adjustment procedureq Display luster white 30%~50%w Place a flicker adjustment jig to the monitor and observethe waveform with an oscilloscope.e Turn VR*** and adjust to make the amplitude of thewaveform to minimum.KVT: VR203, DDX: VR100Oscilloscope range: 20mV, 0.5mS(setting at the time of 04 commercial production)● Noteq In checking the screen after the adjustment, move themonitor up and down in order to confirm that the screendoes not flicker. (This check is also carried out on the 06model.)w Noise due to AC200V can be observed in the flickeradjustment jig and oscilloscope and thus carefully set upthe power supply and GND of the jig and oscilloscope.In 06 model, GND of the measurement equipment hasbeen fl oated.2. Free-run frequency adjustment● Adjustment procedureq Press Auto Adjust on the Test Mode Main screen.w Press FREQ on the Auto Adjust screen.Completion of the procedure with “Auto Adjust OK”DVD video signal is used as the reference signal for theadjustment (15.734kHz).DVD wall paper that is shown at the start of the TEST modeis fixed to the NTSC display regardless of its destination.Once a DISC is played, the wall paper turns into the displaymode of the destination.(When the DVD video signal is in PAL mode, the adjustmentbecomes NG.)ADJUSTMENT