Nortel Meridian 1 Hardware Replacement Manual page 32

Page 32 of 250 Replacing equipment
553-3001-520 Standard 17.00 January 2002
b. Connect the shorter of the two ribbon cables to the slot (below the
Floppy Drive) labeled IDE Secondary Channel.
c. Open the tabs and push the connector to attach the third cable to
the top cable connection labeled +12, GND,GND,VCC.
10 From the front of the module, carefully slide the MMDU the remainder
of the way into its slot.
11 Use a slotted or Phillips screwdriver to secure the screws on the top
and bottom center of the MMDU.
Procedure 2:
Replace the NT4N43AA cPCI Multi-Media Disk Unit (MMDU) by
removing the card cage
1 Power down the shelf containing the card cage.
2 Disconnect the card cage cables:
a. Label and disconnect all cables to the front of the module. Tape
over the contacts to avoid grounding. Tape or tie all cables to the
sides so the working area in front of the card cage is totally clear.
b. If there is an I/O safety panel, remove it by turning the screws on
each side. Set the cover aside.
c. Tag and disconnect all cables from the backplane to the interior of
the I/O assembly.
d. Tag and disconnect all plugs, wires, and cables to the backplane.
3 Remove the card cage:
Note 1: Use two people to remove the Core/Net card cage because
of the weight.
a. Remove the two mounting screws at the bottom rear of the card
cage that secure the card cage to the module casting.
You need a 1/4" nut driver to remove the screws.
It is recommended that you use a magnetized screwdriver to avoid
dropping the screws into the base of the UEM module.
b. Remove the front trim panels on both sides of the card cage.
c. Remove the three mounting screws that secure the front of the
card cage to the bottom of the module.
Save the screws for use with the CP PII card cage.
d. Pull the card cage forward until it is halfway out of the module.