AVD-K600P
(2) When the Y(Luminance) signal doesnOt appear on the screen in PB Mode,
Is 5V applied to the IC301NOCheck the line of the REG
Pins23, 44, 45, 52, 68, 77?5V Line. (Power Circuit)
YES
Is the Y/C Bus signalRefer to �SYSTEM Y/CNO
applied to the IC301BUS CHECK Trouble
Pins53, 54, 55?ShootingO.
YES
Does the normal RF signalNOIs the V.H.S/W signalNOCheck the System Circuit.
appear at the IC301 Pin14?applied to the IC301 Pin57?(IC501 Pin18)
YES
Does the RectangularNO
waveform(5V) appear atCheck the V.H.S/W level.
the IC301 Pin57(V.H.S/W)
YES
YES
Clean the Drum.
Does the Y(Luminance)
NOCheck the R328, R347,signal appear at the IC301
C322, C323.
Pin20?
YES
Is the Y(Luminance) VideoNO
waveform showed up at theCheck the C324.
IC301 Pin22?
YES
Replace the IC301.
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