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Table 425: Cabinet Temperature Query Test (#122) 5 of 6
Error
Code
S8700-se
ries
S8500
1
Test
Result
FAIL
(cont’d)
Description / Recommendation
Cabinet Temperature Query Test (#122)
NONVARIABLE-SPEEDFAN ASSEMBLIES (cont’d): If the fans are
running at high speed, check the following items, any of which can
restrict or redirect airflow within the cabinet.
1. Check both filters. If a filter is dirty or clogged, clean with soapy water
or a vacuum.
2. Ensure that there is nothing other than circuit packs in the carrier
slots that could be restricting the airflow.
3. Ensure that there are no missing circuit-pack faceplates or blanks.
4. The cabinet door must be closed for proper cooling.
5. Wait 5 minutes for the cabinet to cool and rerun the test.
6. If the test fails, check temperatures for the 15 0- /50 0- C criteria. If the
15 0- /50 0- C criteria is present, the fans should be running at high
speed.
7. Wait 5 minutes and rerun the test.
8. If the test still fails, then the ambient room temperature is probably
too high. Cool the room.
9. If the 15 0- /50 0- C criteria does not exist, one of the following
components is defective:
● AHD1 circuit pack
● Fans
● S3 sensors
● S4 sensors
Replace these items one at a time in the order listed, running the test
after each replacement.
S8700-series Fiber-PNC: If more than two environmental tests are
failing, there may be a problem that is undetected on a PN’s
Maintenance circuit pack. Replace the circuit pack.
10. Escalate if the problem persists.
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Communication Manager Release 5.0 Issue 4 January 2008 1577