IBM RT PC 10 Hardware Maintenance And Service page 138

Step 2
1. Set the power switch on the system unit to Off.
2. Exchange the processor board in slot A.
3. Be sure the power has been off 30 seconds, then set the power switch
on the system unit to On.
4. Wait two minutes, then answer the following question.
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IS "II" OR "12" DISPLAYED IN THE TWO-DIGIT DISPLAY?
YES Set the power switch on the system unit to Off.
1. Exchange the system board.
2. Go to "Step 4" on page 3-95.
NO Go to "Step 4" on page 3-95.
Problem Isolation Charts
3-93