Fujitsu FLM 150 ADM Maintenance And Trouble Clearing page 130

Maintenance and Trouble Clearing
FJTU-320-515-480
4.9.2 Procedure
Step 1 If you have a known-good unit, use it to replace the original unit, or locate
another unit and inspect it for damage, debris, and foreign objects. Verify that you
have the correct version for your application:
• EC1A supports Section Data Communication Channel (SDCC) for OC-3,
STS-1E, and OVTG tributaries. Refer to Figure 4-22
• EC1A-DL1 supports SDCC for all Synchronous Optical Network (SONET)
tributaries. Refer to Figure 4-23.
• EC1A-DL2 supports SDCC for all SONET tributaries and FASTLANE
applications. Refer to Figure 4-24.
• EC1A-V2 supports SDCC for all SONET tributaries synchronization
status messaging. Refer to Figure 4-25.
Note: The EC1A unit has no hardware option settings.
Step 2 Replace the original unit. Are the FAIL and LINE LEDs off?
Complete your fault-reporting documentation.
You have completed this procedure.
Repeat trouble analysis procedures (refer to Section 3, Responding to Alarms and
Step 3
Conditions). Are the FAIL and LINE LEDs off?
Complete your fault-reporting documentation.
Note: The Hardware Data Record form is provided in Appendix A of the Plug-In Unit
Installation practice, FJTU-320-515-220.
You have completed this procedure.
Issue 9, May 1999
If Yes:
If Yes:
FNC and FNC Customer Use Only
4.9: Replacing the Embedded Operation Channel
If No:
Go to Step 3.
If No:
Call the Fujitsu Technical Assistance Center at
1-800-USE-FTAC (1-800-873-3822) for assistance.
(EC1A) Unit
Vol. ll, Page 480.4-38