Nortel Meridian 1 Replacement Manual page 198

Page 198 of 362
553-3001-520 Standard 16.00 April 2000
Replacing equipment
Removing equipment
1 Remove the rear grill on the column pedestal. Set the main circuit
breaker to OFF (down).
Shutting off the main circuit breaker disables the entire column.
2 Remove the I/O safety panel over the backplane.
3 Tag and disconnect the power plugs to the MPDU.
4 Remove the metal plate covering the MPDU in the front of the module
by removing the mounting screw in each corner.
5 Unhook the locking devices on the power supply next to the MPDU. Pull
the power supply out of the card cage.
6 Remove the mounting screws for the MPDU; the screw-heads are in the
wall of the power supply slot (see Figure 33). (Be careful—do not let the
screws fall into the module below.) Lift the unit out of the module.
Figure 33
Mounting screws for the MPDU
MPDU
wall inside
power supply
slot
Installing equipment
1 Set the circuit breaker(s) on the replacement MPDU to OFF (down).
2 Position the replacement MPDU in the module. Install the mounting
screws through the wall of the power supply slot.
CAUTION
back plane
MPDU
mounting screws
card cage
553-5890