DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-368CABINET (Cabinet Sensors)
9
1
(Cont’d.)
FAIL
(Cont’d.)
NONVARIABLE-SPEEDFAN ASSEMBLIES (continued): 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
C/50
0
C criteria. If
the 15
0
C/50
0
C criteria is present, then 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
C/50
0
C criteria does not exist, one of the following
components if 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. If many environmental tests are
failing, it can be a problem that is undetected by maintenance on
the SYSAM or EPN Maintenance circuit packs, depending on the
cabinet type. Replace the circuit pack. Escalate if the problem
persists.
Table 9-158. TEST #122 Cabinet Temperature Query Test — Continued
Error
Code
Te s t
Result Description/ Recommendation
Continued on next page
