HP StorageWorks DLT VS 40, Reference Manual

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Internal Tape Drive Installation
36 DLT VS 40/80 GB Tape Drive Reference Guide
Verifying the Installation
Every time the DLT VS 40/80 GB tape drive is powered on, it conducts a
Power-On Self-Test (POST) to ensure that the drive is working properly and ready
to use.
While POST is in progress, watch the front panel LEDs to see the progress and
results of the test. During POST, the following actions take place:
1. The LEDs turn on all at once and then turn off.
2. The Ready (green) LED remains illuminated after POST.
3. The drive emits a buzzing sound as the drive calibrates the read/write head's
position.
POST is complete only after the buzzing sound stops. POST takes several seconds
to complete, after which the drive is ready to use. See Chapter 5, “Operating the
DLT VS 40/80 GB Tape Drive.”