Reinstall
the
Logic Printed Circuit Board. Position
the
System Unit Power switch
to
Off
for five seconds, insert
your
Advanced Diagnostic diskette,
then
power the System Unit
on. Test for an increase (approximately 0.2 Vdc)
at
TP-S
on
the Logic Printed Circuit Board during the POST while
the
LED is lit.
o
•
DOES THE VOLTAGE AT TP-5 INCREASE
(APPROXIMATELY
0.2
Vdc) WHEN THE
"LED"
IS LIT?
NO
Replace the Diskette Drive assembly. See Section 3,
"Removal/Replacement. "
YES Replace Diskette Drive Adapter. See Section 3,
"Removal/Replacement. "
600-19
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