Replacing an SRX5600 Services Gateway DC Power Supply Cable

To replace an SRX5600 Services Gateway DC power supply cable, perform the following procedures:

1. Disconnecting an SRX5600 Services Gateway DC Power Supply Cable
2. Connecting an SRX5600 Services Gateway DC Power Supply Cable

Disconnecting an SRX5600 Services Gateway DC Power Supply Cable

To remove a power cable from a DC power supply:

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to an approved site ESD grounding point.
2. 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.
3. Remove the power cable from the DC power source.
4. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
5. Switch the circuit breaker on the power supply faceplate to the OFF position O.
6. Remove the clear plastic cover protecting the terminal studs on the faceplate.
7. Remove the nut and washer from the terminal studs. (Use a 7/16–in. nut driver or pliers.)
8. Remove the cable lug from the terminal studs.
9. Loosen the captive screws on the power supply faceplate.
10. Carefully move the power cable out of the way.

Connecting an SRX5600 Services Gateway DC Power Supply Cable

To install a replacement power cable for a DC power supply (see Figure 1):

1. Locate a replacement power cable that meets the specifications defined in DC Power Cable Specifications for the SRX5600 Services Gateway.
2. Verify that a licensed electrician has attached a cable lug to the replacement power cable.
3. Verify that the INPUT OK LED is off.
4. 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 1).
5. 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.
6. 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.
7. Replace the clear plastic cover over the terminal studs on the faceplate.
8. Attach the power cable to the DC power source.
9. Verify that the INPUT OK LED on the power supply is lit green.
10. Switch the circuit breaker on the power supply to the ON position (|)

    Note: If more than one power supply is being installed, turn on all power supplies at the same time.

11. Verify that the DC source power cabling is correct. Observe the status of the LEDs on the power supply faceplate. If the power cable is correctly installed and the power supply is functioning normally, the PWR OK, BRKR ON, and INPUT OK LEDs light green steadily.

Figure 1: Connecting Power Cables to the DC Power Supply