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Remove a DC Power Supply
To remove a DC power supply, follow this procedure (see Figure 7 and Figure 8):
an electrostatic discharge (ESD) grounding strap to your bare wrist and connect
the strap to one of the ESD points on the chassis. Make sure the router is
attached to a proper earth ground.
Press the power switch for the power supply (located on the power supply faceplate)
to the OFF (O) position.
If you are power cycling the power supply rather than shutting it off
for a time, wait at least 60 seconds after turning it off before turning it
back on. If you need to power it off again, wait for at least 60 seconds after
powering it on.
Shut off the power flowing to the power supply from the external power
source, so that the voltage across the leads of the power cables is 0 V.
Ensure that there is no chance that the cable leads might become active during
- Loosen the screws securing the clear cover over the field-wiring
terminals and remove the cover.
- Using a #1 Phillips screwdriver, turn the screw on each
field-wiring terminal counter-clockwise to loosen the terminal connector from
around the cable.
- Remove the cables from the terminal connectors and from
the hook located on the faceplate to the right of the field-wiring terminal.
Loosen the thumbscrew at each corner of the power supply faceplate,
using a Phillips screwdriver if necessary.
Grasp the handle on the power supply faceplate and pull firmly to slide
the unit about halfway out of the chassis.
Place one hand under the power supply to support it, then slide it completely
out of the chassis.
Figure 7: Remove a DC Power
Supply from an M7i Router
Figure 8: Remove a DC Power Supply from an M10i Router
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