Replacing A Defective Rom Card - Northern Telecom Meridian 1 Installation And Maintenance Manual

2. Open the door of the IPE or CE/PE Module or expansion cabinet.
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 163.
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.
Each maintenance cable has a left plug and
a right plug. Switching the plugs will disable
the Meridian Companion system.
wired differently and cannot be interchanged. The CMBC and
CMLC use the same maintenance cable
Meridian Companion Installation and Maintenance Guide
Maintenance Page 161 of 220
WARNING!