Power Supply - IBM Aptiva 2190 Hardware Maintenance Service

Power Supply

001 - START
q Power off the system unit.
q
Check the power cord for continuity. Replace if necessary.
q
Check for the correct line voltage from the power outlet, and verify that
the voltage selector switch is set to the correct voltage.
q
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)
q
You might have a damaged on/off switch cable assembly.
q
Disconnect the on/off switch cable assembly connector from the power
supply connector and take an ohm reading.
q
Go to step 007.
004 -
q
Disconnect the power cord from the back of the system unit.
q
Disconnect all power and switch cable connectors from the system board
and the power supply.
q Disconnect the power connectors to all drives.
q Connect the power connector to system board as a power load for driving
up power supply.
q
Reconnect the power cord.
005 - DOES THE POWER SUPPLY FAN RUN? (YES, READ AHEAD. NO,
GO TO STEP 009)
q
With the system powered on and the power supply fan running, check the
voltages of the power supply connectors for the system board and all
drive connectors, as shown in the following figures.
2-35