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Maintenance and Trouble Clearing
FJTU-320-515-480
4.1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-1
4.2
Replacing the Power (PW1A) Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-1
4.3
Replacing the Microprocessor (MP1A) Unit. . . . . . . . . . . . . . . . . . . . . . . . 480.4-5
4.4
Replacing the Time-Slot Assignment (TS1A) Unit . . . . . . . . . . . . . . . . . 480.4-10
4.5
Replacing the Alarm (AW1A) Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-14
4.6
Replacing the Supervisory (SV1A) Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-18
4.7
Replacing the Middle-Speed Mux/Demux/Transmux (MC1A) Unit . . . . 480.4-25
4.8
Replacing the Low-Speed Switch (LS1A-D1) Unit . . . . . . . . . . . . . . . . . 480.4-34
4.9
Replacing the Embedded Operation Channel (EC1A) Unit . . . . . . . . . . 480.4-37
4.10 Replacing the High-Speed Switch Control (HS1A) Unit . . . . . . . . . . . . . 480.4-41
4.11 Replacing the OC-12 Optical Channel (HC1A-6Lx1) Units . . . . . . . . . . 480.4-45
4.12 Replacing the OC-3 Optical Channel (HC1A and MC6A) Units. . . . . . . 480.4-49
4.13 Replacing the STS-1 Electrical Channel (HC1A-STS1) Unit . . . . . . . . . 480.4-59
4.14 Replacing the Timing Control Access (TCA) Unit . . . . . . . . . . . . . . . . . . 480.4-62
(LC1A-D1xx) Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-65
(LC1A-F6xx) Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.4-68
5.1
Handling Fiber Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.5-1
5.2
Cleaning, Connecting, and Disconnecting the Optical Connectors . . . . . 480.5-6
5.3
Measuring Optical Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.5-9
5.4
Verifying External Clock and Clock Connections . . . . . . . . . . . . . . . . . . 480.5-15
5.5
Correcting the T1 or T3 Framing Format . . . . . . . . . . . . . . . . . . . . . . . . 480.5-17
5.6
Correcting Unidirectional or Bidirectional Switch Provisioning . . . . . . 480.5-21
5.7
Placing an SDCC In Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.5-24
5.8
Correcting a Mismounted Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.5-27
Appendix A. Trouble Analysis Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480.A-1
Issue 9, May 1999
FNC and FNC Customer Use Only
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