IBM RT PC 10 Hardware Maintenance And Service page 150

Step 2
1. Do the "Top Cover Removal" on page 4-12.
2. Remove the boards from system board slots Band D.
3. Remove the adapters from adapter slots 1 through 5 except the display
adapter and any specific adapter required to run the failing test.
4. Plug the external power cable into the outlet.
5. Insert Diagnostics 1 (DIAG-1) diskette in the diskette drive.
6. Set the power switch on the system unit to On.
7. Try the failing procedure again.
DID THE SAME PROBLEM OCCUR?
NO Go to "Step 4" on page 3-107.
YES
Continue on the next page.
Problem Isolation Charts 3-105