Maintenance-Object Repair Procedures
555-233-143
8-392
Issue 1 May 2002
2
FAIL
An EPN’s Maintenance circuit pack has reported a temperature problem due
to the S1 sensor detecting a temperature of at least 65
0
C (149
0
F). The entire
cabinet is in danger of power-down if the temperature reaches 70
0
C (158
0
F).
1. If any of the fans are not running, there should be a FAIL with Error Code
1 present. Follow the procedures for that Error Code, noting the
differences for variable- and constant-speed fan assemblies.
2. If the fans are running, check the temperature at the top of the cabinet.
a. If the temperature is at least 65
0
C (149
0
F), the ambient room
temperature is too high and the fans cannot cool the system. Unless
the room temperature is reduced, the system will shut down soon.
3. If the temperature at the top of the cabinet is less than 65
0
C (149
0
F),
either the S1 sensor or an EPN’s Maintenance circuit pack is incorrectly
reporting the problem.
a. Resolve any errors against MAINT, then rerun the test.
b. If there are errors, replace the S1 sensor and retest. If the test fails,
escalate.
3
FAIL
Fan failures and temperature alarms have been reported.
1. Resolve the fan failure (Error Code 1). This should also resolve the
temperature alarm. (With constant-speed fan assemblies, fan failures
correspond to air-flow problems.)
PASS
Temperature measurements and fan performance are satisfactory.
Table 8-162.
Test #122 Cabinet Temperature Query Test —
Continued
Error
Code
Test
Result
Description / Recommendation
Continued on next page
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...