IBM 7331, Installation Manual, Page: 40 / 62

Step 8. If an irrecoverable error is detected, the library beeps and the power-on
indicator blinks to indicate a specific error occurred. The control panel
display shows the message in Figure 19:
Figure 19. Power On Selftest Failure Display
Power On Selftest Failure
and other information to further identify
the cause of the error. The message is continuously displayed and
the library ends further operation.
Step 9. After checking for irrecoverable errors, POST checks for recoverable
errors. If a recoverable error is detected, the library beeps once and the
display shows the message in Figure 20:
Figure 20. Power On Selftest Warning Display
Power On Selftest Warning
and other information to further identify
the cause of the error. The message is displayed for 3 seconds
before the library resumes operation.
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7331 and 3449 Installation Guide