Nortel 1002rp, Техническое обслуживание и диагностика

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January 2007 Replacing the D/480JCT-2T1 T1 interface card
1002rp Server Maintenance and Diagnostics 193
To replace a faulty D/480JCT-2T1 card
1 Review the manufacturer’s documentation for the replacement of
the Intel D/480JCT-2T1 card.
2 Power down the server and disconnect all power cords.
3 Remove external T1 cables connected to the faulty
D/480JCT-2T1 card.
4 See valid slot assignments described in the procedure on page 178
to determine the configuration.
5 Remove the chassis cover to expose the installed cards.
6 Set aside any cables covering the card.
7 Remove the CT Bus cable.
8 Free the card from the faceplate by loosening the screw.
9 Lift the card out of the slot and set it aside.
10 Unpack the replacement D/480JCT-2T1 card and configure the
rotary switch to the correct setting. Use the settings described in the
procedure starting on page 178.
11 If required, install a CT Bus termination jumper to the
D/480JCT-2T1 card on P700 between pin 3 and pin 4 to enable CT
Bus termination.
Note: Only one Intel D/480JCT-2T1 PCI card in the system (the last
on the CT Bus cable) should have a termination jumper installed.
.
CAUTION
Risk of equipment damage
Take precautions to protect internal components. Electrostatic
discharge (ESD) can damage boards and make them unusable.
Wear an ESD wrist strap.