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T640 Routing Node Power Supplies
Figure 94 shows the T640 routing node power supplies and where they are installed
in the chassis.
Figure 94: T640 Routing Node Power Supplies
T640 router rear
Power supply
Power supply
PEM 0
PEM 1
!
See Also
Checking the Power Supply Cables
To check the power supply cables, follow these steps:
Action
1. Verify that the power cable or power cord from the power source to the router is
2. Make sure that the power and ground cables on each DC power supply are
3. Periodically inspect the site to ensure that the cables connected to the power
Monitoring Redundant Power Supplies on page 507
not damaged. If the insulation is cracked or broken, immediately replace the
cord or cable.
arranged so that they do not obstruct access to the other power supply or to the
Routing Engine.
supply are securely in place and are properly insulated.
Chapter 18: Monitoring Power Supplies
DC power supply
CB ON
OVER TEMP
CB TRIP
DC OK
IN PU T 1
IN PU T 0
Checking the Power Supply Cables
!
229
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