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Table 637: Power/Fan Lead Query Test (#1533) 3 of 3
Error
Code
Test
Result
FAIL
(cont’d)
Description and recommendation
Power/Fan Lead Query Test (#1533)
5. If the fans are running at high speed, check the following items. Any
one of these could be restricting or redirecting the cabinet’s air flow:
a. Check the 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.
b. Verify that nothing other than circuit packs are in the carrier slots
that could be restricting air flow.
c. Verify that no circuit-pack blanks or carrier faceplates are missing.
Install and/or replace them as necessary.
d. 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 600-C criteria.
a. 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, then 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 5- to 60 0 -C criteria does not exist, the fans are defective.
Replace the fan assembly and rerun the test. Failures can occur
on the Processor circuit pack that are not detected 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.
7. There is a problem with the environment of the power system. 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 This indicates that the power/fan lead is off and there are no failures in the
G650 or G650 stack.
3 of 3
Communication Manager Release 5.0 Issue 4 January 2008 2039