4. Make sure the cable is not touching or in the way of any services gateway components
and that it does not drape where people could trip on it.
5. Remove the clear plastic cover protecting the terminal studs on the faceplate.
Removing a DC Power Supply from the SRX550 High Memory Services Gateway
Up to two power supplies can be installed at the rear of the chassis on the right side.
Each DC power supply weighs approximately 2 lb (1.29 kg).
CAUTION: Do not leave a power supply slot empty for more than 30 minutes
whilethe services gateway is operational.For properairflow, the powersupply
must remain in the chassis, or a blank panel must be used in an empty slot.
NOTE: After powering off a power supply, wait at least 60 seconds before
turning it back on.
To remove a DC power supply, see Figure 32 on page 167.
1. Switch off the dedicated facility circuit breaker for the power supply. Follow the
electrostatic discharge (ESD) and disconnection instructions for your site.
2. 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.
3. Attach an 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 to the SRX550 High Memory Services Gateway” on
page 194.
4. Remove the clear plastic cover protecting the terminal studs on the faceplate.
5. Remove the screws and washers from the terminals. Use a Phillips (+) screwdriver,
number 2 to loosen and remove the screws.
6. Remove the cable lugs from the terminal studs.
7. Carefully move the power cables out of the way.
8. Push the tab on the left edge of the power supply to the right.
9. Pull the power supply straight out of the chassis.
Copyright © 2016, Juniper Networks, Inc.166
SRX550 High Memory Services Gateway Hardware Guide
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