IBM 5150 Hardware Maintenance Manual page 103

Repeat the test on page 600-6 using another formatted
diskette.
Error Code Page
605
600-26
607
600-26
608
600-26
611
600-26
612
600-27
613
600-27
621
600-27
622
600-27
623
600-27
624
600-27
625
600-27
626
600-27
DO YOU STILL HAVE AN ERROR CODE AFTER
RUNNING THE TEST WITH ANOTHER DISKETTE?
NO
Replace the diskette you used for the first test.
('\
YES
Go to the page listed in the table above for your
error code.
600-8