Nortel DMS-100 Series Maintenance Manual page 561

Replacing an NTRX42 in an MSP
At your Current Location
1 Proceed only if you have been directed to this card replacement procedure from
a step in a maintenance procedure, are using the procedure for verifying or
accepting cards, or have been directed to this procedure by your maintenance
support group.
2 Obtain a replacement card. Verify that the replacement card has the same
product equipment code (PEC), including suffix, as the card that is to be
removed.
At Bay 1 of the OPAC
3 Open the front cover of the MSP by pulling outward firmly at the finger holes
provided and swing the cover down to the open position.
NTRX44AA
1 2 3 4 5
4 Use the breaker designation label to identify which cards are serviced by each
circuit breaker (CB). For example, the label CB01–0/18–01 identifies circuit
breaker 01 as controlling circuit card position 01 on shelf location 18 in bay 0.
Many RX42 modules service two separate devices or units; both units must be
powered down prior to removal of the associated RX42 circuit card.
NTRX41AA
NTRX43AA
6 7 8 9 10
If CB powers
RMM shelf
LCM
DMS-100 Family OPAC Maintenance Manual XPM12 and up
Card replacement procedures 8-195
NTRX42
11 12 13 14 15
Go to
step 5
step 9
NTRX42
MSP
(continued)
NTRX66AA
16 17 18 19 20