JVC HR-XV2EX Service Manual page 18

(2) When the Y(Luminance) signal doesn't appear on the screen in PB Mode,
Is 5.2VT, 5.3VA applied to the
IC301 Pins22, 47, 60, 84?
YES
Is the I 2 C Bus siganl applied
to the IC301 Pins73, 74 ?
YES
Does the normal RF signal
appear at the IC301 Pin76?
YES
Does the Y(Luminance) RF
signal appear at the IC301
Pin9?
YES
Is the Y(Luminance) Video
waveform showed up at
theIC301 Pins49, 40?
YES
Replace the IC301.
NO
Check the line of the 5.2VT,
5.3VA Line. (Power Circuit)
NO
Refer to 'SYSTEM I
CHECK Trouble Shooting'.
NO
Is the V.H.S/W signal
applied to the IC301 Pin80?
Is V.H.S/W "H" about 3.4V
at the IC301 Pin80?
Clean the Drum.
Check the path of the
NO
Y(Luminance) RF signal.
(Check C337, C340)
3-12
2 C BUS
NO
YES
NO
YES
NO
YES
Check the System Circuit.
(IC501 Pin105)
Check the V.H.S/W level.
(Check R335)
Replace the IC301.