IBM RT PC Problem Determination Manual page 39

S t e p 3. L o a d i n g D i a g n o s t i c s
1. Get the diagnostic diskettes from the back of this manual.
2. Remove the write-protect tab, if one is present, from the
diskettes.
3. Check to be sure no programs are running and that the
operating system is properly shut down.
4. If an IBM 5085 is attached, turn off the 5085 power.
5. Turn off the system unit and wait for about 1 minute.
6. If an IBM 5085 is attached, turn the 5085 power on. Be sure the
5085 system diskette is in the 5085 diskette drive.
7. If an RT PC 6192 Expansion Unit is attached, turn on the 6192
power.
8. If an IBM 6156 Portable Disk Drive is attached, insert all the
Portable Disk Drive modules you want to test and turn on the
enclosure power.
CONTINUE to next page.
Section 2. Hardware Problems
2-11