Nortel DMS-100 Series Maintenance Manual page 570

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8-230 OPM card replacement procedures

Replacing a line card

At your current location:

297-8361-550 Standard 04.01 September 2000

Improper handling could possibly damage cards

Store and transport circuit cards in electrostatic discharge

(ESD) protective containers to prevent electrical and

mechanical damage. When handling circuit cards not in ESD

protective containers, stand on a conductive ﬂoor mat and

wear a wrist strap, connected through a 1-megohm resistor to

a suitably grounded object such as a metal workbench or a

DMS frame. (Refer to Northern Telecom Corporate Standard

Equipment damage

Take these precautions when removing or inserting a card:

•.Do not apply direct pressure to the components.

•.Do not force the cards into the slots.

Hot materials

Exercise care when handling the line card. The line feed

resistor may be very hot.

Special tools required

Card shrouds and removal tools are required for removing

cards from the line drawers. For descriptions of these tools,

refer to the note at the end of this procedure.

Proceed only if you have been directed to this procedure from a step in a

maintenance procedure. Using this procedure independently may cause

equipment damage or loss of service.

Locate the line drawer containing the line card to be removed.

Open the line drawer to prepare to remove the faulty card by following the

steps below:

Troubleshooting