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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-221CABINET (Cabinet Sensors)
10
1FAIL
(cont’d.)
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
15
0
C/50
0
C criteria.
a. If the 15
0
C/50
0
C criteria exists, a temperature problem exists, and
the fans (at high speed) should cool down the switch. Wait five
minutes and 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 15
0
C/50
0
C criteria does not exist, the AHD1 circuit pack, the
fans, or the S3 or S4 sensors are defective. Replace these items
one at a time (in the order listed). Rerun the test between each
replacement. Failures can occur on the Maintenance/Tape
Processor, the Duplication Interface, and the EPN Maintenance
circuit pack that are not detected by the respective maintenance,
but that cause many, if not all, environment tests to fail. If many
environment tests are failing, the suspect circuit pack, depending
on the system configuration, should be replaced and the test rerun.
If this does not clear the problem, follow normal escalation
procedures.
2 FAIL The PR-MAINT (Maintenance/Tape Processor), DUPINT (Duplication
Interface) circuit pack, or the EPN MAINT (Maintenance) circuit pack has
reported a temperature problem because the S1 sensor has detected a
temperature of at least 65
0
C (149
0
F). The entire cabinet is in danger of
being powered down if the temperature reaches 70
0
C (158
0
F).
1. If none of the fans are running:
a. Look for and resolve all alarms against the CARR-POW (Carrier
Port Power Unit).
b. Verify that 48 volt DC is available to the fan units. Check the fan unit
wiring harness connector. Verify that there is 48 volt DC between
pins (3, 9, 11 and 2, 8, 10).
■ If there is 48 volt DC at the connector, there should be power to the
fans. If the fans are not running, replace the AHD1. If the fans still
do not run, follow normal escalation procedures.
■ If there is not 48 volt DC at the connector, the current limiter card
(982LS) is probably defective. Replace the current limiter card. If
the fans still do not run, escalate the problem.
2. If only a few of the fans are not running, replace the defective fans.
3. If all the fans can be started, wait five minutes, and rerun the test.If the
test fails again, proceed to Step
Table 10-76. TEST #122 Cabinet Temperature Query Test
[Non-Variable Speed Fans] — Continued
Error
Code
Test
Result Description/ Recommendation
Continued on next page