Installation guide

Installation Troubleshooting 7–3
Use Table 7–1 to isolate a failure in an SF72 storage enclosure.
Table 7–1 Troubleshooting Chart
Symptom(s)
Probable
Cause(s)
Corrective
Action(s)
No OCP indicators
are lit.
1. SF72 enclosure
is not plugged in
or not turned on.
1. At the rear of the
SF72 enclosure, plug
in the ac power cord
or turn on the SF72.
2. Drive dc power
switch is off.
2. At the front of the
SF72 enclosure,
turn on the drive dc
power switch.
3. OCP is not
plugged in or
seated firmly.
3. Press the OCP firmly
in place.
4. Bad OCP. 4. Configure and
replace a new OCP.
5. Bad TTM. 5. Configure and
replace a new TTM.
Single Fault
indicator lit on OCP.
1. Faulty RF72
disk ISE.
1. Press lit Fault
button, then read
fault code and
replace failed FRU.
2. Conflicting DSSI
ID numbers.
2. Verify correct DSSI
ID switch settings
on KFMSA module,
SF72, and magazine
tape subsystems for
that bus.
Multiple Fault
indicators lit on
OCP.
1. Conflicting DSSI
ID number.
1. Verify correct DSSI
ID switch settings
on KFMSA module,
SF72, and magazine
tape subsystems for
that bus.
2. Bad OCP. 2. Configure and install
a new OCP.