Specifications

1-16
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 1 Alarm Troubleshooting
Alarm Procedures
Warning On the OC192 LR/STM64 LH 1550 card, the laser is on when the card is booted and the safety key is in
the on position (labeled 1). The port does not have to be in service for the laser to be on. The laser is
off when the safety key is off (labeled 0).
Warning Invisible laser radiation may be emitted from the end of the unterminated fiber cable or connector. Do
not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100
mm may pose an eye hazard. Use of controls or adjustments or performance of procedures other than
those specified may result in hazardous radiation exposure.
1.5.12 BKUPMEMP
• Critical, Non-service affecting
The BKUPMEMP alarm refers to a problem with the TCC-I card flash memory. The alarm occurs when
the TCC-I card is in use and has one of four problems: the flash manager fails to format a flash partition;
the flash manager fails to write a file to a flash partition; there is a problem at the driver level, or the
code volume fails cyclic redundancy checking (CRC). CRC is a method to check for errors in data
transmitted to the TCC-I. The BKUPMEMP alarm will also raise the EQPT alarm. In this instance, use
the following procedure to clear the BKUPMEMP and the EQPT alarm.
Procedure: Clear the BKUPMEMP Alarm
Step 1 Verify that both TCC-I cards are powered and enabled by confirming lit ACT/STBY LEDs on the TCC-I
cards.
Step 2 Reset the active TCC-I card to make the standby TCC-I card active:
a. In CTC, display the node view.
b. Position the cursor over the active TCC-I card slot.
c. Right-click and choose RESET CARD.
Step 3 If the alarm clears, reseat the old TCC-I and allow it to boot up completely.
Step 4 Do a second reset, this time on the newly active TCC-I card to make the recently reseated standby TCC-I
card active:
a. In CTC, display the node view.
b. Position the cursor over the active TCC-I card slot.
c. Right-click and choose RESET CARD.
Step 5 If the alarm reappears after you perform the switch, replace the TCC-I card:
a. Open the card ejectors.
b. Slide the card out of the slot.
c. Open the ejectors on the replacement card.
d. Slide the replacement card into the slot along the guide rails.