Panasonic AG-MD830E Service Manual

enI-Zw~I-en::J-,C«..J(Sex:I-()w..Jw4-3-17. VHS PLAYBACK FREQUENCYRESPONSE ADJ.BOARD VIDEO 1 C.BATP VIDEO OUTADJ VR3009(C-1)TAPE SELF RECORDED TAPEINPUT SWEEP _(\"11TH OUT BURST)MODE PLAYM.EQ OSCILLOSCOPESPEC 100KHz: 2MHz = 5 : 5.0 ± 1.01. Set the sweep generator output as shown inFigure E14.2. Record the sweep signal.3. Playback the just recorded portion.4. Connect the oscilloscope to video out.5. Adjust VR3009 so that the playback frequencyresponse becomes 5 : 5.0 ± 1.0 at the markerpoints of 100KHz and 2MHz as shown in FigureE15.CVary the vertical scope setting until the 100KHzlevel reaches 5 division)(v. RATE) I Video Sweep Input Signal I100kHz 2MHz 4MHzFigure E14VIDEO OUT (V. RATE)100kHz 2MHzFigure E15--,.-0.3V0.1V0.3V4-3-18. S-VHS PLAYBACKFREQUENCY RESPONSEBOARD VIDEO 1TP VIDEO OUTADJ VR3006(C-1)TAPE S-VHS SELF RECORDED TAPEINPUT SWEEP (WITHOUT BURSnMODE PLAYM.EQ OSCILLOSCOPESPEC 100KHz: 4MHz = 5 : 4.0 ± 0.51. Set the sweep generator output as shown inFigure E16.2. Record the sweep signal.3. Playback the just recorded portion.4. Connect the oscilloscope to video out.5. Adjust VR3006 so that the playback frequencyresponse becomes 5 : 4.0 ± 0.5 at the markerpoint of 100KHz and 4MHz as shown in FigureE17.CVary the vertical scope setting until the 100KHzlevel reaches division)V. RATE I Video Sweep Input Signal I100kHz 2MHz 4MHzVIDEO OUTV.RATE 10 kHzIFigure E164MHzFigure E170.3V0.1V0.3V4-8