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Power Supply
001 - START
•
Power off (unplug) the system unit. Check the
power cord for continuity. Replace if necessary.
•
Check for the correct line voltage from the power
outlet, and verify that the voltage selector switch (if
present) is set to the correct voltage.
•
Power on the system unit.
002 - DOES THE POWER SUPPLY FAN RUN?
(YES, GO TO STEP 003. NO, GO TO STEP 004.)
003 - DOES THE SYSTEM FAIL TO SHUT OFF
WHEN THE ON/OFF SWITCH IS PRESSED? (YES,
READ AHEAD. NO, GO TO STEP 005.)
•
You might have a damaged on/off switch cable
assembly.
•
Disconnect the on/off switch cable assembly
connector from the power supply connector and
take an ohm reading.
•
Go to step 007.
004 -
•
Disconnect the power cord from the back of the
system unit.
•
Disconnect all power and switch cable connectors
from the system board and the power supply.
•
Disconnect the power connectors to all drives.
•
Connect any one of the power connector to system
board or drive as power load for driving up power
supply.
•
Reconnect the power cord and turn on the power
supply.
72
IBM Desktop System HMM
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