Juniper SRX 5600 Hardware Manual page 168

SRX 5600 Services Gateway Hardware Guide
Removing a DC Power Cable
To remove a power cable from a DC power supply:
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Installing a DC Power Cable
To install a replacement power cable for a DC power supply (see Figure 70 on page
143):
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142
Replacing Power System Components
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to an approved site ESD grounding point. For more information
about ESD, see "Preventing Electrostatic Discharge Damage" on page 152.
Switch off the external circuit breakers for all the cables attached to the power
supply. Make sure that the voltage across the DC power source cable leads is 0
V and that there is no chance that the cables might become active during the
removal process.
Remove the power cable from the DC power source.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see "Preventing Electrostatic Discharge Damage" on page 152.
Switch the circuit breaker on the power supply faceplate to the
Remove the clear plastic cover protecting the terminal studs on the faceplate.
Remove the nut and washer from the terminal studs. (Use a 3/8–in. nut driver
or pliers.)
Remove the cable lug from the terminal studs.
Loosen the captive screws on the power supply faceplate.
Carefully move the power cable out of the way.
Locate a replacement power cable that meets the specifications defined in Table
34 on page 191.
Verify that a licensed electrician has attached a cable lug to the replacement
power cable.
Secure the power cable lug to the terminal studs, first with the flat washer, then
with the nut. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque
to each nut, (see Figure 70 on page 143).
Route the power cable along the cable restraint towards the left or right corner
of the chassis. If needed, thread plastic cable ties, which you must provide,
through the openings on the cable restraint to hold the power cables in place.
Make sure the cable is not touching or in the way of any device components,
and that it does not drape where people could trip on it.
Replace the clear plastic cover over the terminal studs on the faceplate.
Attach the power cable to the DC power source.
Verify that the INPUT OK LED on the power supply is lit green.
position .
OFF O