3-11
5. Y/C CIRCUIT
(1) No Video in EE Mode,
No Video in EE Mode
Does the Video signal
appear at the IC302
Pins1, 5?
Is there 5V at the IC302
Pin6?
Replace the IC302.
Does the Video signal
appear at the IC301
Pins28, 30, 32?
Is REG 5.0V applied to the
IC301Pins23, 44, 45, 52, 68,
77?
Does the Video signal
appear at the IC301 Pin26?
Does the Video signal
appear at the IC501 Pin52?
Does the Video signal
appear at the IC602 Pin7?
Check the REG 5V Line.
(Power Circuit)
Is I
2
C BUS signal applied to
the IC301 Pins53, 54, 55?
Replace the IC301.
Check the path of the sig-
nal between the IC301 Pin
26 and IC501 Pins50, 52.
Is there 5V on the plus
terminal of the C614?
Check the REG 5V Line.
(Power Circuit)
Replace the IC602.
Check the System Circuit.
(Refer to ‘SYSTEM I
2
C BUS
CHECK Trouble Shooting’)
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
Check DVD Video Input
(IC802, Pin29), Tuner
Video Input (TU701 Pin24),
Line Video Input (JK801),
respectively.
NO
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