Technical data

7-16

Power Supplies

7. When the LED goes out, use a firm, steady pressure to seat

the power supply properly.

Caution

If the power supply does not seat smoothly, use a gentle

rocking motion to seat it. DO NOT back the unit out. If

you do back the unit out, restart this procedure from

step 6 to avoid resetting the system.

8. Tighten the two yellow, captive screws in the upper corners

of the power supply.

9. Reinstall the power supply bezel.

10. Connect the power supply to the AC or DC power source:

– If the power supply is an AC unit, plug the power cord

back into the module in the rear of the XR chassis, then

into the AC outlet.

– If the power supply is a DC unit, clamp the DC leads to the

terminal block on the module and turn the -48Vdc power

source on.

12- and 20-Slot Hot Add

1. Remove the power supply bezel.

2. Slide the replacement power supply SLOWLY into the

chassis until the Charging Hot Swap LED lights, then STOP

(see Figure 7-3 on page 7-19).

The LED will remain lit until the power supply is charged.

Note The original power supplies (MC1000K-AC700 and

MC1000K-DC700) are not equipped with a Charging

Hot Swap LED. Slide the power supply in until you feel

the first connectors contact the receiver, then wait one

full minute before proceeding to Step 3.