Fujitsu FLM 150 ADM Maintenance And Trouble Clearing page 158

Maintenance and Trouble Clearing
FJTU-320-515-480
4.15.2 Procedure
Step 1 If you have a known-good LC1A unit, use it to replace the original unit, or locate
another unit and inspect if for damage, debris, and foreign objects. Figure 4-39
shows the front panel and hardware option locations for the LC1A-D1 and
LC1A-D1E units.
Note: The line buildout (LBO) settings for the LC1A-D1E2 unit are software provisioned.
Step 2 Set the option switches on the new unit to the same positions used on the
removed unit.
Step 3 Install the replacement LC1A unit. Is the LINE LED off and the FAIL/SVCE
LED green?
Complete your fault-reporting documentation.
You have completed this procedure.
Step 4 Check the incoming signal at the DSX-1/DSX-3/STS-1 bay. Is the signal present
and error-free at the DSX?
If Yes:
Go to Step 5.
Step 5 Repeat trouble analysis procedures. Refer to Section 2, Plug-In Unit Front-Panel
Devices. Is the LINE LED off and the FAIL/SVCE LED green?
If Yes:
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
4.15: Replacing the Low-Speed Channel–DS1
If Yes:
The source of the problem is not the FLM 150 ADM.
You have completed this procedure.
Call the Fujitsu Technical Assistance Center at
1-800-USE-FTAC (1-800-873-3822) for assistance.
FNC and FNC Customer Use Only
If No:
Go to Step 4.
If No:
If No:
Vol. ll, Page 480.4-66
(LC1A-D1xx) Unit