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Ji'Gc--&Z2t1-
3-2)
The -24V LCD circuit fails to produce output.
I
Check
the
voltag~
in
.C22
~ithin
,the
conlrol
PWS if
YES
Replace [C4 of
the
Control
PWB\i..tith
a new one.
I
40VDC is produced.
- - - -
"
,
....
".
NO·
- -
Check the waveform of L2
if it
is as shown in the
w8vefdrtn
J
fIgure.
YES
=-!
I Check 03, 05, and R9.
Or,
r~place
it with a new ami
I
NO
R~place
L2 with a
n~VJ ~me.
3-3)
VBul circuit does not produce output.
Check the voltage of C9 within the control PWB
if
NO
I
5V is produced.
Check IC3 and TR11. Or, replace
it
with a new one.
YES
Check OS1 or replace it with a new one.
3-4)
VBT circuit fails to produce output.
Replace F1 with a new one.
-4~-
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