IBM 6151 Maintenance And Service Manual page 260

Step 10
The System Checkout routine will sometimes detect a problem that
is not detected by the other diagnostics.
DIAG-l
The System Checkout Option will test all functions that do not require you
tv
do anything, The other options allow you to test only that option.
An .. in front of the
ID
shows that the test has been run.
Choose the test you would like to ron.
m
ITEM
2 Keyboard Checkout
3 Display Checkout
HAVE YOU RUN "SYSTEM CHECKOUT" USING THE
ADVANCED DIAGNOSTIC ROUTINES?
YES
NO
3-0060-10 Service Manual
Go to "Step 21" on page 3-0060-22.
Continue on the next page.