IBM RT PC 10 Hardware Maintenance And Service page 36

The Diagnostic Routines options and their functions are:
System Checkout
The System Checkout option checks all the installed features to the extent
that they can be tested without special actions.
Keyboard Checkout
The Keyboard Checkout option checks the keyboard adapter and keyboard.
Display Checkout
The Display Checkout option checks the display adapter and the attached
display. The Display Checkout displays a pattern. Follow the instructions
displayed in that pattern.
Diskette Drive(s) Checkout
The Diskette Drive(s) Checkout option checks the diskette adapter and the
diskette drives. The Diskette Drive Checkout requires a formatted High
Capacity diskette. A formatted blank Double Sided diskette is required to
check the ability of the drive to read a double sided diskette.
Fixed-Disk Drive(s) and Media Checkout
The Fixed-disk Drive(s) and Media Checkout option checks all the
fixed-disk drives installed in the system unit. This option does a function
test of each drive and a read test on all sector addresses.
Other Checkout Options
The other device checkout options check the adapters and devices installed
in the system unit. Your system displays the checkout options for the
devices installed.
Diagnostics 2-11