20-pin power connector

IDE power connector

LS120 power connector

006 - ARE THE VOLTAGES CORRECT AND DOES THE FAN RUN? (YES, READ AHEAD. NO, GO TO STEP 009.)

The power supply is working normally.

If you suspect the on/off switch cable assembly, see Step 003.

If the fan continues to run when all connectors are plugged back in, go to See “Undetermined Problems” on page 72.

If the fan stops running when a drive connector is plugged back in, go to “Start” on page 31.

007 - DO YOU HAVE AN OHM READING WHEN THE SWITCH IS PRESSED AND AN OPEN READING WHEN THE SWITCH IS RELEASED? (YES, READ AHEAD. NO, GO TO STEP 008.)

Replace the on/off switch cable assembly.

008 -

Replace the system board.

End.

009 -

Replace the power supply.

End.

Check Procedures 69

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Image 101
IBM 6646, 6645, 6644 manual Pin power connector IDE power connector, Replace the on/off switch cable assembly