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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
Chapter2 Alarm Troubleshooting
Alarm Procedures
The FSTSYNC alarm disappears after approximately 30 seconds. If the alarm does not clea r, log onto
http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).
Note FSTSYNC is an informational alarm. The alarm does not require troubleshooting.
2.6.92 FULLPASSTHR-BI
•Not Alarmed (NA), Non-Service Affecting (NSA)
The Bidirectional Full Pass-Through Active (FULLPASSTHR-BI) condition occurs on a nonswitching
node in a BLSR when the protect channels on the node are active and carrying traffic, and there is a
change in the receive K byte from No Request.

Procedure: Clear the FULLPASSTHR-BI Condition

Step 1 Complete the “Clear a BLSR Span Lock Out” procedure on page 2-127.
Step 2 If the condition does not clear, log onto http://www.cisco.com/tac for more information or call TAC
(1-800-553-2447).
2.6.93 HITEMP
•Critical (CR), Service Affecting (SA) for NE
•Minor (MN), Non-Service Affecting (NSA) for EQPT
The High Temperature (HITEMP) alarm occurs when the temperature of the ONS 15327 is above
122° F (50° C).
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327.
Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.

Procedure: Clear the HITEMP Alarm

Step 1 Verify that the environmental temperature of the room is not abnormally high.
Step 2 If the room temperature is not abnormal, physically ensure that nothing prevents the fan-tray assembly
from passing air through the ONS 15327.
Step 3 If airflow is not blocked, physically ensure that blank faceplates fill the ONS15327 empty slots. Blank
faceplates help airflow.
Step 4 If faceplates fill the empty slots, verify whether the air filter needs replacement. Refer to “Inspect and
Maintain the Air Filter” procedure in the CiscoONS 15327 Procedure Guide.
Step 5 If the filter is clean, complete the “Remove and Reinsert Fan-Tray Assembly” procedure on page 2-130.