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RMC-ENV (Power/Fan Sensors)
Issue 1 June 2005 1955
1FAIL
(
cont’d)
5. If the fans are running at high speed, check the items on following list.
Any one of these could be restricting or redirecting the cabinet’s air
flow.
● Check filter; if the filter is dirty or clogged it should be cleaned or
replaced. The filter can either be washed with soap and water or
vacuumed.
● Verify that nothing other than circuit packs in the carrier slots that
could be restricting air flow.
● Verify that no circuit-pack blanks or carrier faceplates are missing.
Install and/or replace them as necessary.
● Be sure the cabinet’s doors are properly closed. The doors must be
closed to enable the fans to properly cool the cabinet. Wait 5
minutes to allow the fans to cool the cabinet. Rerun the test. If the
test 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
5- to
60
0
-C criteria.
● If the 5- to
60
0
-C criteria exists, a temperature problem exists, and
the fans (at high speed) should cool down the switch. Wait 5
minutes, and rerun the test. If the test still fails, the ambient room
temperature is probably too high, and the room should be cooled.
If not, the fans are defective. Replace the fan assembly, and rerun
the test. Failures can occur on the Processor circuit pack that is not
detected by the respective MO, but that cause many, if not every,
environment test to fail. If many environment tests are failing, the
suspected circuit pack (depending on the system configuration)
should be replaced and the test rerun.
There is a problem with the environment of the power system:
1. The power unit for the cabinet may be defective.
a. Verify and, if necessary, replace the power unit.
b. Rerun the test. If the test still fails, escalate.
PASS The cabinet does not have a power or fan problem. If a problem is reported,
troubleshoot by using the previous procedures for the FAIL cases.
Table 719: TEST #122 Cabinet Temperature Query Test (continued)
Error
Code
Test
Result
Description / Recommendation
3 of 3