Control Unit Problems; Backing Up System Programming - AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual
Communications system
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Also See for MERLIN LEGEND Release 3.1:
- System programming manual (887 pages) ,
- System manager's manual (423 pages) ,
- System planning manual (384 pages)
Table of Contents
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Control Unit Problems
The next step after resolving problems with telephones, adjuncts, and related
wiring, is to troubleshoot the control unit. Troubleshoot the control unit
components in the following order:
Power supply
Processor
Line/trunk and extension modules (hereafter referred to as modules )
Carrier
!
WARNING:
Beware of hazardous voltages. Only qualified technicians should
attempt to service the control unit. Follow all procedures carefully.
Backing Up System Programming
Before performing any procedure that requires powering down the system,
save system programming in one of the following ways:
Save the system programming to a floppy disk. See System
Programming and Maintenance (SPM) for detailed instructions.
4
Control Unit Problems
4–1
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Table of Contents
Troubleshooting
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