Installation guide

Replacing a DC Power Supply in the E4G-400 Router
E4G Series Routers Hardware Installation Guide
81
WARNING!
Always make sure that the DC circuit is de-energized before connecting or disconnecting the DC power
cables on the 300 W DC power supply.
CAUTION
Provide proper connection and strain relief on the DC power cables in accordance with all local and
national electrical codes.
Connecting the Model 10933 DC power supply to a +24V source
CAUTION
These instructions are for the Model 10933 DC power supply only. Do not connect a Model 10934A DC
power supply to a +24V source.
To connect the DC power input cables on an model 10933 power supply to a +24V source:
1 Verify that the DC circuit is de-energized.
2 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate
ground point on the rack.
3 Slide the cover off the terminal block (Figure 57).
4 Connect the DC power input cables as follows:
a On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the
captive square washer.
b Slide the spade terminal of the negative wire (–24 V) under the captive square washer on the
negative terminal (labeled –24V).
c Slide the spade terminal of the positive wire (+24 V) under the captive square washer on the
positive terminal (+24V).