XV-Cl
E
TROUBLE SHOOTING TABLE (Continued)
1
No
horiy;ezd
sync1
r
-----
No
1
I
Is there horizontal drive signal output
at pin (58) of
IC801?
IC801
defective.
1
1
Yes
I
L
-----
-I
I I
c-----s
Are video signal at pin (27) or (29) of
IC801
and horizontal drive signal at
No
pin (58) of
lC801
in sync with each
other?
t-
I
1
Check pins (58) and
I
(59) of
IC801
and their
I
peripheral parts.
L
-----
-I
1
Yes
r
-----
Is there horizontal sync signal output No
Check
IC503
and its
1
at pin (10) of
IC503?
*,
peripheral circuits.
I
I
Yes
r
----A----
1
Check
IC1603,
IC1607
and
IC1608,
I
all located on the control PWB. Check
I
also their peripheral parts.
L
------w--
-I
r
-----
Is there vertical sync signal output at
No
L
Check
IC801
and its
1
pin (4) of
IC801?
*,
peripheral circuits.
I
-~~~~~~~a~~5:
Is there vertical sync signal input at
r
---------
Check
IC1606
and its penpheral
1
, parts.
I
21
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