Cisco 4000-M Replacement Manual page 7

Before opening the chassis, disconnect the telephone-network cables to avoid contact
Warning
with telephone-network voltages.
Loosen the nonremovable chassis release screw on the rear panel of the chassis. (See
Step 6
Figure 3.)
Pull on the handle located on the upper right corner of the chassis to slide the component
Step 7
tray out of the chassis shell until the safety latch catches. (See Figure 3.)
Figure 3 Component Tray Removal for Chassis with a Safety Latch
Chassis shell
Rear of chassis
Before releasing the safety latch, support the component tray from underneath, either on
Warning
your work surface or with your hands, to prevent injury.
Step 8 Support the component tray with one hand, push down on the safety latch tab, and pull
the component tray out completely.
Set the component tray on your work surface.
Step 9
Proceed with the section "Removing AC and DC Power Supplies."
Safety latch tab
Chassis release
screw
AUX CONSOLE
Hand supporting
component tray
Accessing the Power Supply
INPUT 100-240VAC 50/60HZ 3.0-1.5 AMPS
Handle
Replacing the Cisco 4000 Series Power Supply 7