5190/5194 Modular Tape Subsystem Manual

Installing the Modular Tape Subsystem
5190/5194 Modular Tape Subsystem Manual—426878-002
3-53
Troubleshooting the Modular Tape Subsystem
(NonStop Himalaya S-Series Servers)
ACL Does Not Come Online
Symptom Corrective Action
The message panel flashes
SELFTEST CTRL after
power is applied and then
displays CHK 98. (The SEL
LED might not flicker,
indicating that the drive
formatter is not polling the
drive.)
1. Make sure a SCSI cable (one of the cables listed in
Appendix A, Part Numbers
) connects the tape drive
CRU from the S-PIC either to the SCSI passthrough
terminator on the PMF CRU or IOMF CRU (on a
NonStop Himalaya S7000, S7400, S70000, or S72000
PMF CRU), or to the SCSI port (on other model PMF
CRUs).
2. On a NonStop Himalaya S7000, S7400, S70000, or
S72000 PMF CRU or an IOMF CRU, make sure a
SCSI terminator is firmly installed on the unused SCSI
port on the back of the tape drive CRU. Then turn
power off and on again. See also Responding to Error
Messages and Check Codes on page 4-31. If the
error message or check code persists, contact your
service provider.
Tape Drive Does Not Function Properly
Symptom Corrective Action
Tape drive does not respond
to software commands, or it
functions abnormally.
1. Make sure a SCSI cable (one of the cables listed in
Appendix A, Part Numbers
) connects the tape drive
CRU either to the SCSI passthrough terminator on the
PMF CRU or IOMF CRU (on a NonStop Himalaya
S7000, S7400, S70000, or S72000 PMF CRU or an
IOMF CRU), or to the SCSI port (on other NonStop
PMF CRUs).
2. Use SCF commands to isolate the problem in the tape
drive CRU. See examples of SCF commands in
Section 4, Operating the Cartridge Tape Drive
and ACL. Refer to the SCF Reference Manual for the
Storage Subsystem for additional SCF commands,
including the RESET TAPE command with the
FORCED option, which stops and restarts the tape
process.