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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 14 Alarm Troubleshooting
Alarm Procedures
Step 9
Clean the fiber:
a.
Clean fiber according to local site practice.
b.
If no local practice exists, use a CLETOP Real-Type or equivalent fiber-optic cleaner and follow the
instructions accompanying the product.
Step 10
Verify that the power level of the optical signal is within the OC-N card receiver specifications.
Step 11
Repeat Steps 1 to 5 for any other ports on the card.
Step 12
Replace the protect standby OC-N card.
Step 13
If the alarm does not clear after you replace the BLSR cards on this node one by one, follow Steps 4 to
14 for each of the nodes in the ring.
Step 14
Login to http://www.cisco.com/TAC for more information or call the Cisco Technical Assistance Center
to report a service-affecting problem (1-800-553-2447).
14.4.45 FAILTOSWS
•
Not Alarmed (NA) (Condition)
This failure to switch to protection span signals an APS span switch (FAILTOSWS) alarm occurs for a
four-fiber BLSR if a failed span switch initiates a ring switch. If the ring switch occurs, the FAILTOSWS
alarm does not appear. If the ring switch does not occur, the FAILTOSWS alarm appears. FAILTOSWS
clears when one of the following actions occur: a higher priority event, such as a user-switch command
occurs, the next ring switch succeeds, or the cause of the APS switch (such as an SF or SD alarm) clears.
Follow the procedure for
“Clear the FAILTOSWR on a Four-Fiber BLSR Configuration” section on
14.4.46 FAN
•
Critical, Service-Affecting
The failure of the cooling fan-tray alarm indicates a problem with the fan-tray assembly. When the fan
is not fully functional, the temperature of the ONS 15327 can rise above its normal operating range. The
fan tray contains six fans and needs a minimum of five working fans to properly cool the ONS 15327.
However, even with five working fans, the fan tray can need replacement because a sixth working fan is
required for extra protection against overheating.
Caution
Always use the supplied ESD wristband when working with a powered ONS 15327. Plug the wristband
cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
Procedure: Clear the FAN Alarm
Step 1
Check the condition of the air filter to see if it needs replacement.
Step 2
If the filter is clean, take the fan-tray assembly out of the ONS 15327.
Step 3
Reinsert the fan tray making sure the back of the fan tray connects to the rear of the ONS 15327.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...