Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Introduction
Page 1-2
Equipment
Detailed information about system programming is included in System
Programming
and in System Programming and Maintenance (SPM).
You can use either a DOS PC or a Master Controller (MCII or MCIII) to run
SPM. To connect a PC to the control unit, you need a 355AF adapter and a
D8W-87 cord.
NOTE:
On-site programming maintenance is preferred if it is feasible; remote
programming overrides on-site programming, except when on-site backup
or restore is in progress. See ‘‘
On-Site Programming Maintenance’’ and
‘‘
Remote Programming Maintenance’’, later in this chapter, for details.
Tools
In addition to the maintenance terminal, you need the following tools:
■ EIA breakout box
■ Digital voltmeter (KS-20599 or equivalent)
■ 110/66-type punchdown tool
■ Dracon TS21 or equivalent touch-tone telephone for testing
■ Assorted flathead and Phillips-head screwdrivers
■ Long-nosed and regular pliers
■ Wrist grounding strap
■ Replacement parts recommended by your technical support organization
!
CAUTION:
Should you ever need to open a module and handle the circuit board, use
the wrist strap to connect your wrist to a suitable ground first. Electrostatic
discharge can destroy or severely damage the integrated circuits in the
power supply, processor, and modules.