Nortel Meridian 1 Option 11C Upgrade Manual page 115

5 Wait at least five minutes.
Wait at least five minutes before continuing with Step 6. Read the
important Caution on the faceplate of the power supply unit.
6 Disconnect the AC power supply cord and, if equipped,
disconnect the DC power supply cord from the power supply unit.
Note: The cords are at the bottom of the power supply unit, as shown
in Figure 48 on page 116.
7 Attach the antistatic wrist strap, provided at the bottom of the
cabinet, to your wrist.
Static electricity can damage circuit cards. Wear an antistatic wrist
strap when handling circuit cards or any of their components.
8 Remove the power supply unit from the cabinet.
9 With a large slot screwdriver, carefully pry the latches on the grill
at the top of the cabinet (Figure 47) until the latches release. Lift
the grill up to remove it and replace with the new grill.
Figure 47
Location of latches on top grill
Grill
Upgrade cabinet hardware
WARNING
CAUTION
Press upward on the latches
to release
Option 11C and 11C Mini
Page 115 of 224
Upgrade Procedures Guide