Juniper Networks J4350 - Manual (Page 183)

Replacing and Troubleshooting Hardware Components
CAUTION: There is no standard color coding for DC power cables. The color coding
used by the external DC power source at your site determines the color coding
for the leads on the power cables that attach to the terminal studs on each power
supply. You must ensure that power connections maintain the proper polarity. The
power source cables might be labeled
(+) and (–) to indicate their polarity.
5. Remove the power cable from the DC power source.
6. Use a Phillips screwdriver to remove the clear plastic cover protecting the
terminal block.
7. Within the terminal block, remove the screw that fastens the power cable
lug to the terminal block.
8. Carefully move the power cable out of the way.
9. Using the removed screw, secure the replacement power cable to the
appropriate terminal. Tighten the screw until snug. Do not overtighten.
The screw contains a captive washer used to secure the power cable lug to
the terminal block.
NOTE: Each power supply must be connected to a dedicated DC power feed. For
information about connecting to DC power sources, see “Connecting Power”
on page 86.
10. Dress the power cable appropriately.
11. Replace the clear plastic cover over the terminal block.
12. Verify that the power cable does not block access to router components or
drape where people might trip on it.
13. Press and release the power button to power on the router. Verify that the
POWER LED lights steadily after you press the power button.
Removing a DC Power Supply from a J6350 Router
The power supplies are located at the right rear of the chassis. A
power supply weighs 2.4 lb (1.1 kg).
To remove a DC power supply from a J6350 Services Router (see Figure 49):
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to the ESD point on the chassis, or to an outside ESD point if
Replacing Hardware Components 163