AT&T 6300 Service Manual page 314

DIAGNOSTICS
2. If a bad track is found on the first four cylinders, the
following error message is displayed:
BAD DISK DRIVE - CONSULT THE SERVICE MANUAL
VERIFY SURFACE TEST FAILED
PRESS 'ENTER' KEY TO CONTINUE ­
3. If the bad track found exceeds the entries of the BTT, the
following error message is displayed:
BAD TRACK TABLE OVERFLOW
VERIFY SURFACE TEST FAILED
PRESS 'ENTER' KEY TO CONTINUE ­
Then the program returns to Main Menu.
If the Verify Surface Test has been selected and the disk is LL
Formatted, the following message will be displayed:
- VERIFY SURFACE TEST ­
HOW MANY LOOPS DO YOU WANT TO RUN
?
4-122