IBM RT PC 10 Hardware Maintenance And Service page 146

Step 2
1.
Set the power switch on the system unit to Off.
2. Exchange the display adapter.
3. Be sure the power has been off 30 seconds, then set the power switch
on the system unit to On.
4. Wait four minutes, then answer the following question.
DIAGNOSTIC OPERATING. INSTRUCTIONS
DIAG-l
This diskette contains diagnostics and utilities for your system. You
shoul d use these procedures whenever you are havi ng problems wi th your system
whi ch have not been corrected by any software appl i cati on procedures avail ab 1e.
In general, the procedures will run automatically. However, sometimes you will
be required to select options, tell the system when to continue, do simple
tasks, and exchange di skettes.
ARE THE "DIAGNOSTIC OPERATING INSTRUCTIONS" DISPLAYED
CORRECTLY?
YES Set the power switch on the system unit to Off, then go to "Step
4" on page 3-103.
NO Set the power switch on the system unit to Off.
1. Remove the new display adapter.
2. Exchange the system board.
3. Install the original display adapter.
4. Go to "Step 4" on page 3-103.
Problem Isolation Charts
3-101