Fujitsu FLM 150 ADM Maintenance And Trouble Clearing page 118

Maintenance and Trouble Clearing
FJTU-320-515-480
4.7.2 Procedure
Step 1 If you have a known-good MC1A 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 type of MC1A unit for your application:
• MC1A-D3 (Figure 4-14)
• MC1A-D3A2 (Figure 4-15)
• MC1A-STS1 (Figure 4-16)
• MC1A-ST1P (Figure 4-17)
• MC1A-TMD3 (Figure 4-18)
• MC1A-TME1 (Figure 4-19)
• MC1A-MDM1 (Figure 4-20)
Note: The MC1A-TMD3/-TME'1/-MDM1 units do not have hardware option settings.
Step 2 Set the option switches to the same positions as those used on the removed unit.
Step 3 Insert the replacement unit. Is the LINE LED off and the FAIL/SVCE LED
green?
Complete your fault-reporting documentation.
You have completed this procedure.
Check the indicators of the MC1A unit at the remote terminal. Is the FAIL/SVCE
Step 4
LED on the MC1A or TS1A unit red?
Go to Step 6.
Issue 9, May 1999
If Yes:
If Yes:
FNC and FNC Customer Use Only
4.7: Replacing the Middle-Speed Mux/Demux/
If No:
Go to Step 4.
If No:
Go to Step 5.
Transmux (MC1A) Unit
Vol. ll, Page 480.4-26