IBM 2274 - Manual (Page 105)

Check Procedures 71
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.