WA
TROUBLE SHOOTING TABLE
(Continued)
Checking the
red video circuit and
its peripheral
circuits
Checking the VGA’s
red video circuit and
its peripheral
c i r c u i t s
Is there signal at pin (13) of
No
Is there signal at pin (13) of
Yes
I
I
LCP circuitry faulty.
Is there signal at pin (3) of
Is there signal at pin (3) of
Yes
I
or its peripheral circuit faulty.
I
I
Is there signal at pin (6) of
- - - - - - - - - - - - - _ _ _ I
.
Is there signal at pin (6) of
l?
I
or its peripheral circuit faulty.
I
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
and Rl 1
thru -7 of
Yes
I
I
or its peripheral circuit faulty.
I
Are there signals at
thru -7
and
thru -7 of
I
I
Yes
I
or its peripheral circuit faulty.
I - - - - - - - - - - - - - - - - I
Are there signals at
thru -10 and
Gl thru -10 of
Yes
I
I
or its peripheral circuit faulty. ,
I
N o
I
I
or its peripheral circuit faulty. ,
I
N o
Check the video
Q14 thru Q17 or their peripheral
,
faulty.
system’s red video
circuit and its
TC2 connector or output PWB faulty.
I
,
I
peripheral circuits
I
No
Are there signals at VBRO thru -7 of
I
I
R8276 or LCP circuitry faulty. ,
Yes
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