Replacing A Defective Rom Card - Nortel Meridian Companion Installation And Maintenance Manual

3. Attach the left plug of the CMRC, CMLC or CMBC maintenance cable
to the interboard faceplate cable harness or bypass faceplate cable
harness to the left of the defective card.
4. Attach the right plug of the maintenance cable into the cable harness to
the right of the defective card.
Note: The maintenance cables for CMRC and CMLC/CMBC are
5. Lifting the faceplate connectors, unplug the faceplate cable harness from
J1 and J2 of the defective card.
6. Remove the defective card.
7. Replace the defective card with a new card.
8. Attach the faceplate cables to the new card.
9. Remove the maintenance cable as shown in Figure 32: Maintenance
cable, on page 157.
10. Reenable the card from the Meridian 1 system and the Meridian
Companion system.

Replacing a defective ROM card

If troubleshooting indicates defects, replace the ROM card.
Note: It is suggested that you perform a System Reevaluation and backup
prior to replacing the ROM card.
1. Disable all Meridian Companion cards from the Meridian 1 card using
the DISC command in LD 32.
2. Ensure proper system grounding by following ESD practices.
3. Disconnect the faceplate cable on the CMCC.
All LEDs on other Meridian Companion cards turn on.
4. Remove the CMCC. The Meridian 1 system indicates that there is a card
polling failure with the XMI001 LoopShelfCard.
5. Unscrew the ROM from the two plastic standoffs.
wired differently and cannot be interchanged. The same cable is
used to replace either the CMLC or the CMBC.
Meridian Companion Installation and Maintenance Guide
Maintenance Page 155 of 206