Installation guide

7–4 Installation Troubleshooting
Table 7–1 (Cont.) Troubleshooting Chart
Symptom(s)
Probable
Cause(s)
Corrective
Action(s)
3. Bad DSSI
cable(s).
3. Isolate with DSSI
bus meter
1
and
replace.
One or more
indicators continue
to cycle.
Conflicting DSSI
ID numbers.
Verify correct DSSI
ID switch settings
on KFMSA module,
SF72, 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
cable(s).
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 SF72 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.
Fan is not spinning
and power supply
LED is lit.
1. Bad power
supply.
1. Replace power
supply.
2. Bad fan. 2. Replace fan.
3. Bad TTM. 3. Configure a new
TTM and replace.
1
The DSSI bus meter part number is 29–28008–01.