Cisco Systems C3850NM210G Manual De Usuario
4-12
Catalyst 3850 Switch Hardware Installation Guide
OL-26779-02
Chapter 4 Power Supply Installation
Finding the Power Supply Module Serial Number
Step 3
Connect the DC-input power terminals to the terminal blocks. See
or
. Make sure
to match the polarity (negative to negative, positive to positive) when connecting the wires to the
terminal blocks. Connect the ground wire to a grounded metal rack or to earth ground if the switch is not
in a grounded rack.
terminal blocks. Connect the ground wire to a grounded metal rack or to earth ground if the switch is not
in a grounded rack.
Figure 4-12
DC Source A Isolated From Source B with No Common Ground
Figure 4-13
DC Source A and Source B Connections with Common Ground
Step 4
Torque all terminal block screws to 11 lbf-in.
Step 5
Replace the terminal block safety cover.
Step 6
Move the DC power source circuit-breakers to the ON position.
Step 7
Confirm that the power supply DC OK and PS OK LEDs are green. See
for a description of
the module LEDs.
Finding the Power Supply Module Serial Number
If you contact Cisco Technical Assistance regarding a power supply module, you need to know the serial
number. See
number. See
to
to find the serial number. You can also use the CLI to find out
the serial number.
25
3
447
+
B-
B+
-
-
A+
A-
+
25
3
446
+
B-
B+
-
-
A+
A-
+