Nt6D6003 Core Bus Terminator Card - Nortel Meridian 1 Replacement Manual

NT6D6003 Core Bus Terminator Card

Use this procedure to replace a Core Bus Terminator (CBT) card.
Module covers are not hinged; do not let go of the cover. Lift the cover
away from the module and set it out of your work area.
Note: The CBT is not required with NT5D21 Core/Network Modules.
1 The CBT card must be on the inactive Core. If you need to switch the
active Core:
LD 135
SCPU
2 Unhook the locking devices on the CBT card; pull it out of the card cage.
3 Check the replacement CBT card. All jumpers on the card should be
preset to open (the two pins are not connected together by a jumper plug)
and must be left open.
Note: The card may, however, have jumper plugs installed over one pin
on the jumpers. The plugs are provided as extra plugs that may be
required on some other card or for future requirements.
4 Insert the replacement CBT card into the vacated slot.
5 Test the functions of the CBT card in LD 135:
TEST CPU
TEST IPB
TEST CNI c s
If all the tests pass, switch the active Core:
SCPU
a If there is a problem with any of the tests, CCED system messages
are generated.
b If there is no problem, exit LD 135 by entering ****
Replacing equipment
WARNING
test the CP card and CP to CP cable
test the backplane protocol
"c" is the CPU (0 or 1), "s" is the slot (8–12);
perform this test for each CNI in the module
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Hardware replacement