IBM RT PC Problem Determination Manual page 69

S t e p 51. P o w e r
Check that the system is plugged into the wall outlet and power is
available at that outlet. You can use a lamp to test the outlet.
IS T H E P O W E R -O N IN D IC A TO R LIG H T E D ?
YES STOP. You have found the problem.
CONTINUE to next page.
N O
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Section 2. Hardware Problems