1.
Position
the
System Unit Power switch
to
Off.
2.
Set
the
meter
switch on the OHM's
(xl)
scale .
3. Remove
the
System Board connectors from
the
System
Board and take resistance measurements
on
the
System
Board pins
as
shown below.
•
Common lead
5 6 7 8 8 8
Ohm lead
3 4 9
10
11
12
Minimum
6
48
17
0.8 0.8 0.8
Resistance
ohms ohms
ohms
ohms ohms
ohms
Connectors
Top View Power Supply
ARE ANY
OF
THE RESISTANCE MEASUREMENTS
BELOW THE MINIMUM SHOWN IN THE TABLE?
NO You have a bad power supply. See Section 3,
"Removal/Replacement. "
YES You have a bad system unit board. See Section 3,
"Removal/Replacement. "
020-9
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