Quantum DLTtape DLT 4000, Product Manual

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Hardware Implementation
2-26 Quantum DLT 4000 Tape Drive
2.7 TROUBLESHOOTING
Table 2-11 lists troubleshooting tips in the event that your tape drive fails its
power-on self test or if it signals a problem via its front panel LED’s.
If, after attempting the recommended actions listed in Table 2-11, the problem still
exists or recurs, a hardware failure may be the cause. Contact your service
representative.
Table 2–11 Troubleshooting Chart
If… Then… You Should…
System does not
recognize the tape
drive. System may not be
configured to recognize the
SCSI ID. Configure system to recognize the tape
drive’s ID.
SCSI ID may not be unique Change the SCSI ID and reconfigure the
system. The new ID becomes effective at
the next power on.
SCSI adapter parameters may
not be correct Check SCSI adapter documentation.
SCSI signal cable may be loose Ensure SCSI cable is fully seated at each
connector end.
SCSI terminator may be loose
or not present on the bus Ensure correct, secure termination of
bus.
SCSI bus may not be
terminated correctly If tape drive is last or only device on bus
(except for adapter), make sure
terminator is installed on tape drive.
If tape drive is not the last or only device
on the bus, check the cable connections
and ensure that the bus is properly
terminated at each end.
SCSI terminator may not be at
end of bus or more than two
terminators may be present. Ensure that a terminator is installed at
each end of the bus. One terminator is
usually installed at the host end of the
bus.
SCSI bus may be too long.
Too many devices on the bus.
Limit bus length to ANSI SCSI standard
for the SCSI interface being used.
Limit the number of devices on the bus
(including the SCSI adapter) to match the
limits of the interface being used.