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 sp eed, 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, c lean with soapy
water or a vacuum.
2. Ensure that there is nothing other than circuit packs in the carrier
slots that could b e restricting the airflow.
3. Ensure that there are no missing circuit pack faceplates or blanks.
4. The cabinet door must be closed for prop er cooling.
5. Wait 5 minutes for the cabinet to cool and rerun the test.
6. If the test fails, check temperatures for the 150C/500C criteria. If
the 150C/500C 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 150C/500C 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 b y maintenance on
the SYSAM o r EPN Main tenanc e circ uit p acks, depen ding on the
cabinet type. Replace the circuit pac k. Escalate if the problem
persists.
Table 9-158. TEST #122 Cabinet Temperature Query T es t — Continued
Error
Code Test
Result Description/ Recommendation
Continued on next page