IBM 6151 Maintenance And Service Manual page 144

Step 12
Look for the number displayed in the two-digit display in the
following table.
Number Go to Step
22
"Step 16" on page 3-0030-16.
94 "Step 26" on page 3-0030-26.
99
"Step 15" on page 3-0030-15.
DID YOU FIND THE NUMBER IN THE TABLE?
YES Go to the step listed.
NO Continue on the next page.
3-0030-12 Service Manual