Service manual

XG-XVI E/A
TROUBLE SHOOTING TABLE (Continued)
1 Lamp does not light up 1
r
_-------------_
Replace the lamp. Does the new
I
lamp light up?
Lamp was defective.
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----------__-_
-J
No
IS voltage of over 200V supplied No
across C1701?
Is F701 blown out?
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I
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Replace F1701.
--------------
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No
l
I
I
No
Check IC2001.
is voltage of over 3V supplied to
pins (1) thru (4) of EB connector?
I Power unit in trouble. Check the
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J
, output pins of EA, EB and EC
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----_-------__
connectors for short-circuit or
,
Yes
i voltage drop.
----__-------- J
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---_--------___
I Q1707 or PC1702 defective.
1 Replace it.
----------em--
Is voltage of over IV supplied to
, Beplace the sub PWB or check its I
, Internal elements.
___----------- J
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Checking the throughout circuit
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Is analog output coming from PC?
No
-1”.
I
j ------- *--- ----;
Digital output not acceptable.
,
T
-,-------------_I
Are LCP and monitor interconnected
No
with an appropriate cable?
I Yes
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---------------_
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Use an appropriate cable.
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Are LCP and monitor in sync?
No ------------,---I
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i-------+------y
IC3003, IC3004 or IC3005 or their
t
peripheral circuits in trouble.
- - - - - - - - - - - - - - - -’
t IC3001 or its peripheral circuits in
t trouble.
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44