Polycom DOC2237A manual Corrective Maintenance

Models: DOC2237A

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MGC Hardware and Installation Manual

Corrective Maintenance

Corrective maintenance refers to changing or replacing an element of the system that is faulty. The MGC has several components in which problems may occur:

Main Control Module

Functional Modules:

Network Interface Modules (ISDN/T1-CAS, ATM, IP and MPI and/or Serial)

MUX and MUX+ Modules

Audio/Audio+ Modules

Video/Video+ Modules

Data Modules

I/O Cards

Power Supply Module

Fans

Warning!

All maintenance tasks are to be performed by qualified, authorized personnel.

Use only replacement parts supplied by your dealer.

Follow all procedures. Do not skip any steps.

Unless specified differently, the procedures described here are the same for both the MGC-100 and the MGC-50.

Before replacing parts:

To ensure a part needs replacing, complete the troubleshooting procedures.

Identify exactly which part needs replacing.

Make sure you have the correct replacement part on hand.

Make sure you are using proper ESD equipment, to prevent damage to the system.

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Page 153
Image 153
Polycom DOC2237A manual Corrective Maintenance