Nortel Communication Server 1000E Maintenance Manual page 145

LD 96
LD 96
2 Disable the Clock Controller using these commands:
LD 60
3 Disable the PRI pack using these commands:
LD 60
The LEDs on the front of the card change from green (enabled)
to red (disabled.) For this to happen, the DIS MSDL command
must be used, as in
4 Hold the circuit card by the lock latches, unlock the latches,
and slide the circuit card out of the Media Gateway. If required,
remove any daughterboards that may be attached. See
Procedure 32 "Removing the NTAK20 and NTAK93/NTBK51
from the NTBK50 card" (page
5 On the replacement PRI circuit card, configure any switches and
install any daughterboards as required. Hold the card by the lock
latches and slide it into its assigned slot until it connects with the
backplane.
6 Secure the lock latches on the circuit card.
7 Enable the Clock Controller and the PRI in their corresponding
overlays:
LD 60
LD 60
The associated DCHI/DDCH is automatically enabled.
8 Check the tracking of the Clock Controller with the following
overlay:
LD 60
If it is not tracking or is not locked, use the following commands
to track:
LD 60
Removing daughterboards from the NTBK50 card
Because of the physical layout of the motherboards and daughterboards,
remove the NTAK20 before the NTAK93/NTBK51.
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 04.01 4 June 2010
Copyright © 2004-2010 Nortel Networks. All Rights Reserved.
Replacing the NTAK79 or NTBK50 2.0 Mb PRI card 145
DIS DCH X
DIS MSDL X
DIS CC 0
DISL X
step 1.
146).
ENL CC 0
ENLL X
SCK 0
TRCK PCK/SCLK
--End--