21
6-2. Vertical
Unstable
picture
Is the
12V,-12Vdc
line voltage is
correct?
Refer to P. S. U
Is the
pulse of pin 6 of
the IC401
correct?
Trouble in
vertical D. Y
No
No
No
Yes
Yes
Is the output
of pin 8 of IC501
all normal?
Check IC401 and
its ambient circuit
Yes
Check the IC501 and
its ambient circuit
50Vp-p
40V
-10V
