JVC HR-XV2EK - Page 15

3-11
4. Y/C CIRCUIT
(1) No Video in EE Mode,
No Video in EE Mode
Check the 24Pin of Tuner.
Does the Video signal
appear at the IC301 Pin15?
Is 5V applied to the IC301
Pins4, 22, 47, 60, 84?
Does the Video signal
appear at the IC301 Pin29?
Does the Video signal
appear at the IC501 Pin19?
Does the Video signal
appear at the Emitter termi-
nal of the Q805?
Check the 5.2VT, 5.3VA
Line. (Power Circuit)
Is I
2
C BUS signal applied to
the IC301 Pins73, 74?
Check C327. (AGC)
Chck the path of the signal
between the IC301 Pin29
and IC501 Pin17.
Replace the IC301.
Does the 12VT, 5.4VA
appear at the Emitter termi-
nal of the Q805.
Replace the Q805.
Check the 12VT, 5.4VA
Line. (Power Circuit)
Check the System Circuit.
(Refer to ‘SYSTEM I
2
C BUS
CHECK Trouble Shooting’)
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO