Sharp XG-XVI E/A, Руководство по обслуживанию

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E/A
TROUBLE SHOOTING TABLE
(Continued)
Checking the
blue video circuit
and its peripheral
circuits
Checking the VGA’s
blue video circuit
and its peripheral
circuits
I
N o
Is there signal at pin (3) of
Is there signal at pin (3) of
Is there signal at pin (3) of
Is there signal at pin (3) of
I
I
or its peripheral circuit faulty.
I _ - - - - _ - - - - - - - - - - I
Is there signal at pin (6) of
Is there signal at pin (6) of
or its peripheral circuit faulty.
I
Are there signals at thru -7
and BO thru -7 of
Yes
I
or its peripheral circuit faulty.
I
I
I
or its peripheral circuit faulty.
I _ - - - - m - - - - - - v - - - l
Y e s
,
Are there signals at thru -10 and
thru -10 of
Y e s
I
I
or its peripheral circuit faulty.
.
- - I
Are there signals at the bases of
and
I
or its peripheral circuit faulty.
I I
Are there signals at pins (1) and (3) of
Check the video
Y e s
Q22 thru or their peripheral
system’s blue video
, parts faulty.
circuit and its
TC2 connector or output PWB faulty.
I
peripheral circuits.
I
I
N o
Are there signals at VBBO -7 of
I
or LCP circuitry faulty.
I
Y e s