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CABINET (Cabinet Sensors)
Issue 1 May 2002
8-391
555-233-143
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
-/50
0
-C criteria. If the
15
0
-/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
-/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 an EPN’s Maintenance
circuit pack. Replace the circuit pack. Escalate if the problem persists.
Table 8-162.
Test #122 Cabinet Temperature Query Test —
Continued
Error
Code
Test
Result
Description / Recommendation
Continued on next page
Содержание S8700 Series
Страница 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Страница 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Страница 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Страница 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Страница 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Страница 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...
Страница 1121: ...CARR POW Carrier Power Supply Issue 1 May 2002 8 399 555 233 143 Figure 8 19 Power Distribution Unit J58890CH 1 ...
Страница 1447: ...E DIG RES TN800 reserve slot Issue 1 May 2002 8 725 555 233 143 E DIG RES TN800 reserve slot See ASAI RES ...
Страница 1735: ...LGATE AJ Issue 1 May 2002 8 1013 555 233 143 LGATE AJ See BRI SET LGATE BD See BRI BD LGATE PT See BRI PT ...
Страница 1846: ...Maintenance Object Repair Procedures 555 233 143 8 1124 Issue 1 May 2002 Figure 8 62 TN787 MMI MULTIMEDIA INTERFACE CIRCUIT PACK ...