IBM 6151 Maintenance And Service Manual page 386

Step 2
1. Remove the boards from slots Band D, and record the type and
slot position.
2. Set the power switch on the system unit to On.
3. Wait 2 minutes; then answer the following question.
A,IZB165
IS "5c" OR "05" DISPLAYED IN THE TWO-DIGIT DISPLAY?
NO Go to "Step 7" on page 3-9810-7.
YES Continue on the next page.
3-9810-2 Service Manual