Installation guide

8.1 Troubleshooting the SF7x Storage Enclosure
Table 8–1 (Cont.) Troubleshooting Chart
Symptoms Probable Causes Corrective Actions
Multiple Fault
indicators lit on OCP.
1. Conflicting DSSI ID
number.
1. Verify correct DSSI ID
switch settings on KFMSA
module, SF7x, and magazine
tape subsystems for that
bus.
2. Bad OCP. 2. Configure and install a new
OCP.
3. Bad DSSI cables. 3. Isolate with DSSI bus
meter
1
and replace.
Symptoms Probable Causes Corrective Actions
One or more indicators
continue to cycle.
Conflicting DSSI ID
numbers.
Verify correct DSSI ID switch
settings on KFMSA module,
SF7x, and magazine tape
subsystems for that bus.
One ISE is not
accessible.
1. DC power to ISE is
not on.
1. Turn on dc power switch.
2. Bad ISE drive
module.
2. Replace ISE drive module.
3. Bad DSSI cables. 3. Isolate with DSSI bus
meter
1
and replace.
4. Bad remote front
cable.
4. Replace cable.
5. Bad power harness. 5. Replace power harness.
ISE is not seen or seen
at unexpected DSSI ID
value.
1. RFP cables are
not plugged in the
SF7x TTM or ISE.
1. Check that both ends of
RFP cables are plugged in.
2. Bad OCP ID
switch.
2. Reconfigure and replace
OCP.
3. Bad RFP cable. 3. Replace appropriate RFP
cable.
Symptoms Probable Causes Corrective Actions
Fan is not spinning and
power supply LED is lit.
1. Bad power supply. 1. Replace power supply.
1
The DSSI bus meter part number is 29–28008–01.
(continued on next page)
Installation Troubleshooting 8–3