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Troubleshooting Symptom Charts/System - 17
Symptom Charts
System
Fan on power supply
is running, but no
startup chime, screen
is black, drive not
accessed at startup,
and no LED on front of
system
1 Verify power supply voltage switch is set correctly for your
region (see “Voltage Switch” in Basics chapter for more
information).
2 Check jumper block J28. Be sure setting is correct for type
of power supply installed (see “Logic Board” in Take-Apart
chapter for more information).
3 Check jumper block configuration at J16. Make sure jumper
block is correct color for processor type installed (see
“Processor Module” in Take-Apart chapter for more
information) and that it is installed in the correct direction.
4 Reseat voltage regulator.
5 Reseat processor module. Make sure locking arm is in down
position.