Check Procedures 59Power Supply001 - STARTATTENTION: Check the Power Override switch, situated at the back of themachine, just above the connector for the power cable. If this switch isactivated (switched to on), no power will be supplied to the system.• 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 thevoltage 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/OFFSWITCH 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 powersupply 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 boardand the power supply.• Disconnect the power connectors to all drives.• Connect any one of the power connector to system board or drive as powerload for driving up power supply.• Reconnect the power cord and turn on the power supply.005 - DOES THE POWER SUPPLY FAN RUN? (YES, READ AHEAD. NO,GO TO STEP 009)• With the system powered on and the power supply fan running, check thevoltages of the power supply connectors for the system board and all driveconnectors, as shown in the following figures.
