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Getting a major cabinet alarm
- Thread starter PhoneTeck
- Start date
AvayaTier3
Technical User
test environment long
display error high-resolution for cabinet 1
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
39 years Bell, AT&T, Lucent, Avaya
Tier 3 for 29 years and counting
display error high-resolution for cabinet 1
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
39 years Bell, AT&T, Lucent, Avaya
Tier 3 for 29 years and counting
- Thread starter
- #3
Cabinet Temperature Query Test [for
Non-Variable Speed Fans] (#122)
This test queries the Maintenance/Tape Processor in a Standard system PPN, the
Duplication Interface circuit pack in a PPN for a High or Critical Reliability system,
or the EPN Maintenance circuit pack in an EPN for the status of the cabinet
sensors in the cabinet that contains non-variable speed fans.
NOTE:
The descriptions for Error Codes 1 and 2 (FAIL) in the following table are
reversed for Generic 1 systems that use a TN731B maintenance circuit
pack. That is, Error Code 1 indicates an “over temperature” problem while
Error Code 2 indicates and “air flow” problem. If you are servicing a Generic
1 system, be sure to follow the proper service strategy.
Non-Variable Speed Fans] (#122)
This test queries the Maintenance/Tape Processor in a Standard system PPN, the
Duplication Interface circuit pack in a PPN for a High or Critical Reliability system,
or the EPN Maintenance circuit pack in an EPN for the status of the cabinet
sensors in the cabinet that contains non-variable speed fans.
NOTE:
The descriptions for Error Codes 1 and 2 (FAIL) in the following table are
reversed for Generic 1 systems that use a TN731B maintenance circuit
pack. That is, Error Code 1 indicates an “over temperature” problem while
Error Code 2 indicates and “air flow” problem. If you are servicing a Generic
1 system, be sure to follow the proper service strategy.
1. If none of the fans are running, then:
a. Look for and resolve all alarms against the
CARR-POW (Carrier Port Power Unit).
b. Verify -48 volt DC power is available to the fan units.
Check the fan unit wiring harness connector. Check
that there is 48 volt DC between pins 3, 9, 11 and 2, 8,
10.
If there is -48 volt DC power at the connector, there
should be power to the fans. If the fans are not
running, replace the AHD1. If the fans still do not run,
escalate the problem.
If there is no -48 volt DC power at the connector, then
the current limiter card (982LS) is probably defective.
Replace the current limiter card. If the fans still do not
run, escalate the problem.
2. If only a few of the fans are not running, replace the
defective fans.
3. If all the fans can be started, wait five minutes and rerun
the test. If the test fails again, proceed to Step 4 or 5 as
applicable.
4. If the fans are not at high speed, measure the cabinet
temperature at the air intake and the air exhaust at the
top of the cabinet.
a. If the 150 C/500 C criteria is met, there is a problem
with either the AHD1 circuit pack or the fans that is
preventing the fans from operating at high speed.
Replace the AHD1 circuit pack and/or the fans. If this
succeeds in getting the fans to run at high speed, wait
five minutes to give the cabinet time to cool down and,
rerun the test. If the problem persists, go to step 5.
b. If the 150 C/500 C criteria is not met, the PR-MAINT
(Maintenance/Tape Processor), DUPINT (Duplication
Interface) circuit pack, or the EPN MAINT
(Maintenance) circuit pack is incorrectly reporting this
condition. Look for and resolve all errors on these
maintenance objects first, then rerun the test. If the
test still fails, escalate the problem.
5. If the fans are running at the high speed, check the items
on list that follows. Any on of the items could be
restricting or redirecting the flow of air within the cabinet.
a. Check both filters. If a filter is dirty or clogged it should
be cleaned or replaced. The filters can either be
washed with soap and water or vacuumed.
b. Make sure there is nothing (other than circuit packs) in
the carrier slots that could be restricting the air flow.
c. Make sure there are no missing (blank) circuit pack or
carrier faceplates. Install and/or replace them as
necessary.
d. Make sure the cabinet door is properly closed. The
door must be closed for the fans to be able to properly
cool the cabinet. Wait five minutes to give the fans a
chance to cool the cabinet. Rerun the test. If the tests
still fails, proceed to Step 6.
6. At this point, there should be nothing impeding the air
flow, and the fans should be running at high speed.
Check the temperatures for the 150 C/500 C criteria.
a. If the 150 C/500 C criteria exists, a temperature
problem exists, and the fans (at high speed) should
cool down the cabinet. Wait five minutes and rerun the
test. If the test still fails, the ambient room temperature
is probably too high, and the room should be cooled.
b. If the 150 C/500 C criteria does not exist, the AHD1
circuit pack, the fans, or the S3 or S4 sensors are
defective. Replace these items one at a time (in the
order listed). Rerun the test between each
replacement. Failures can occur on the
Maintenance/Tape Processor, the Duplication
Interface, and the EPN Maintenance circuit pack that
are not detected by the respective maintenance, but
that cause many, if not all, environment tests to fail. If
many environment tests are failing, the suspect circuit
pack, depending on the system configuration, should
be replaced and the test rerun. If this does not clear
the problem, follow normal escalation procedures.
a. Look for and resolve all alarms against the
CARR-POW (Carrier Port Power Unit).
b. Verify -48 volt DC power is available to the fan units.
Check the fan unit wiring harness connector. Check
that there is 48 volt DC between pins 3, 9, 11 and 2, 8,
10.
If there is -48 volt DC power at the connector, there
should be power to the fans. If the fans are not
running, replace the AHD1. If the fans still do not run,
escalate the problem.
If there is no -48 volt DC power at the connector, then
the current limiter card (982LS) is probably defective.
Replace the current limiter card. If the fans still do not
run, escalate the problem.
2. If only a few of the fans are not running, replace the
defective fans.
3. If all the fans can be started, wait five minutes and rerun
the test. If the test fails again, proceed to Step 4 or 5 as
applicable.
4. If the fans are not at high speed, measure the cabinet
temperature at the air intake and the air exhaust at the
top of the cabinet.
a. If the 150 C/500 C criteria is met, there is a problem
with either the AHD1 circuit pack or the fans that is
preventing the fans from operating at high speed.
Replace the AHD1 circuit pack and/or the fans. If this
succeeds in getting the fans to run at high speed, wait
five minutes to give the cabinet time to cool down and,
rerun the test. If the problem persists, go to step 5.
b. If the 150 C/500 C criteria is not met, the PR-MAINT
(Maintenance/Tape Processor), DUPINT (Duplication
Interface) circuit pack, or the EPN MAINT
(Maintenance) circuit pack is incorrectly reporting this
condition. Look for and resolve all errors on these
maintenance objects first, then rerun the test. If the
test still fails, escalate the problem.
5. If the fans are running at the high speed, check the items
on list that follows. Any on of the items could be
restricting or redirecting the flow of air within the cabinet.
a. Check both filters. If a filter is dirty or clogged it should
be cleaned or replaced. The filters can either be
washed with soap and water or vacuumed.
b. Make sure there is nothing (other than circuit packs) in
the carrier slots that could be restricting the air flow.
c. Make sure there are no missing (blank) circuit pack or
carrier faceplates. Install and/or replace them as
necessary.
d. Make sure the cabinet door is properly closed. The
door must be closed for the fans to be able to properly
cool the cabinet. Wait five minutes to give the fans a
chance to cool the cabinet. Rerun the test. If the tests
still fails, proceed to Step 6.
6. At this point, there should be nothing impeding the air
flow, and the fans should be running at high speed.
Check the temperatures for the 150 C/500 C criteria.
a. If the 150 C/500 C criteria exists, a temperature
problem exists, and the fans (at high speed) should
cool down the cabinet. Wait five minutes and rerun the
test. If the test still fails, the ambient room temperature
is probably too high, and the room should be cooled.
b. If the 150 C/500 C criteria does not exist, the AHD1
circuit pack, the fans, or the S3 or S4 sensors are
defective. Replace these items one at a time (in the
order listed). Rerun the test between each
replacement. Failures can occur on the
Maintenance/Tape Processor, the Duplication
Interface, and the EPN Maintenance circuit pack that
are not detected by the respective maintenance, but
that cause many, if not all, environment tests to fail. If
many environment tests are failing, the suspect circuit
pack, depending on the system configuration, should
be replaced and the test rerun. If this does not clear
the problem, follow normal escalation procedures.
AvayaTier3
Technical User
Are the fans running?
running high speed?
running low speed?
On power up, high for a couple of seconds, then drop to lower speed is normal.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
39 years Bell, AT&T, Lucent, Avaya
Tier 3 for 29 years and counting
[URL unfurl="true"]http://bshtele.com[/url]
running high speed?
running low speed?
On power up, high for a couple of seconds, then drop to lower speed is normal.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
39 years Bell, AT&T, Lucent, Avaya
Tier 3 for 29 years and counting
[URL unfurl="true"]http://bshtele.com[/url]
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