Turn the System Unit power
OFF
for five seconds,
then
turn
the
System Unit power ON. Check for the voltage at Pin
12
on
the signal cable connector
to
drop from 2.0-5.5 Vdc
to
0-0.8 Vdc during the POST.
•
DID
YOU
HAVE
2.0-5.5 Vdc AT
PIN
12
ON
THE
SIGNAL
CABLE
CONNECTOR
WHEN
THE
POWER
WAS
FIRST
TURNED ON?
NO Replace the Logic Printed Circuit Board. See
Section 3, "Removal/Replacement."
YES
600-11
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