Replacing Power System Components

The power cords on all Services Routers are replaceable.

You can add a second power supply to the J6350 Services Router that is of the same type as the first (either AC or DC). The power supplies are located at the right rear of the chassis (see Figure 15 and Figure 17). Each J6350 power supply provides power to all components in the router. The J6350 power supplies are fully redundant. If one power supply fails or is removed, the remaining power supply instantly assumes the entire electrical load. One power supply can provide full power for as long as the router is operational.

Each J6350 power supply is hot-insertable and hot-removable.

Caution: Do not leave a power supply slot empty for more than a short time while the Services Router is operational. The power supply or a blank power supply panel must remain in the chassis for proper airflow.

To replace power system components, use the following procedures:

• Replacing AC Power Supply Cords
• Removing an AC Power Supply from J6350 Routers
• Installing an AC Power Supply in J6350 Routers
• Replacing DC Power Supply Cables
• Removing a DC Power Supply
• Installing a DC Power Supply

Replacing AC Power Supply Cords

To replace the AC power cord for a redundant power supply:

1. Locate a replacement power cord with the type of plug appropriate for your geographical location (see AC Power, Connection, and Power Cord Specifications).
2. 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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
3. Press and release the power button to power off the router. Wait for the POWER LED to turn off.

   Note: If the power supply is a redundant power supply in a J6350 Services Router, you can leave the router powered on and power flowing in the other power supply.

4. Unplug the power cord from the power source receptacle.
5. Unplug the power cord from the appliance inlet on the power supply faceplate.
6. Insert the appliance coupler end of the replacement power cord into the appliance inlet on the power supply faceplate.
7. Insert the power cord plug into an AC power source receptacle.

   Note: Each power supply must be connected to a dedicated AC power feed. For information about connecting to AC power sources, see Connecting Power.

8. Verify that the power cord does not block access to Services Router components or drape where people might trip on it.
9. Press and release the power button to power on the router. Verify that the POWER LED lights steadily.

Removing an AC Power Supply from J6350 Routers

The power supplies are located at the right rear of the chassis. A power supply weighs 2.4 lb (1.1 kg).

To remove an AC power supply from a J6350 Services Router (see Figure 76):

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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
2. Press and release the power button to power off the Services Router. Wait for the POWER LED to turn off.

   Note: If the power supply is a redundant power supply in a J6350 Service Router, you can leave the router powered on and power flowing in the other power supply.

3. Unplug the power cord from the power source receptacle.
4. Unplug the power cord from the appliance inlet on the power supply faceplate.
5. Slide the ejector tab on the power supply faceplate to the right and hold it in place to unlock the power supply.
6. Grasp the handle on the power supply faceplate, and pull firmly to start removing the power supply. Slide it halfway out of the chassis (see Figure 76).
7. Place one hand underneath the power supply to support it and slide it completely out of the chassis.
8. If you are not reinstalling a power supply into the emptied slot, install a blank power supply panel over the slot.

Figure 76: Removing an AC Power Supply

Installing an AC Power Supply in J6350 Routers

To install an AC power supply in a J6350 Services Router (see Figure 77):

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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
2. Using both hands, slide the power supply into the chassis until you feel resistance.
3. Firmly push the power supply into the chassis until it comes to a stop. Make sure that the power supply faceplate is flush with any adjacent power supply faceplate.
4. Insert the appliance coupler end of a power cord into the appliance inlet on the power supply faceplate.
5. Insert the power cord plug into an AC power source receptacle.

   Note: Each power supply must be connected to a dedicated AC power feed. For information about connecting to AC power sources, see Connecting Power.

6. Verify that the power cord does not block access to router components or drape where people might trip on it.
7. Press and release the power button to power on the router. Verify that the POWER LED lights steadily.

Figure 77: Installing an AC Power Supply

Replacing DC Power Supply Cables

To replace a power cable for a DC power supply:

1. Locate a replacement power cable and a lug that meet the specifications defined in Chassis Grounding and DC Power, Connection, and Power Cable Specifications.

   Caution: A licensed electrician must attach a cable lug to the power cable that you supply. A cable with an incorrectly attached lug can damage the router (for example, by causing a short circuit).

2. 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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
3. Press and release the power button to power off the Services Router. Wait for the POWER LED to turn off.
4. Ensure that the voltage across the DC power source cable leads is 0 V and that the cable leads cannot become active during installation.

   Caution: You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. 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.

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 (see Step 1) 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.

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.

Removing a DC Power Supply

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 (see Figure 78):

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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
2. Press and release the power button to power off the Services Router. Wait for the POWER LED to turn off.
3. Ensure that the voltage across the DC power source cable leads is 0 V and that the cable leads cannot become active during installation.

   Caution: You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. 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.

4. Remove the power cables from the DC power source.
5. Use a Phillips screwdriver to remove the clear plastic cover protecting the terminal block.
6. Within the terminal block, remove the screws that fasten the power cable lugs to the terminal block.
7. Carefully move the power cables out of the way.
8. Slide the ejector tab on the power supply faceplate to the right, and hold it in place to unlock the power supply.
9. Grasp the handle on the power supply faceplate, and pull firmly to start removing the power supply. Slide it halfway out of the chassis (see Figure 78).
10. Place one hand underneath the power supply to support it, and slide it completely out of the chassis.
11. If you are not reinstalling a power supply into the emptied slot, install a blank power supply panel over the slot.

Figure 78: Removing a DC Power Supply

Installing a DC Power Supply

Each power supply in a DC-powered router must be connected to earth ground. A ground terminal is provided on each DC power supply for this purpose.

To install a DC power supply (see Figure 79):

1. Ensure that the voltage across the DC power source cable leads is 0 V and that the cable leads cannot become active during installation.

   Caution: You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. 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.

2. 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 the router is disconnected from earth ground. For more information about ESD, see Preventing Electrostatic Discharge Damage.
3. Using both hands, slide the power supply into the chassis until you feel resistance.
4. Firmly push the power supply into the chassis until it comes to a stop. Make sure that the power supply faceplate is flush with any adjacent power supply faceplate.
5. Use a Phillips screwdriver to remove the clear plastic cover protecting the terminal block.
6. Within the terminal block, remove the two center screws next to the labels –48 VDC and RTN.

   Each screw contains a captive washer to secure a power cable lug to the terminal block.

7. Using one of the removed screws, secure the positive (+) DC source power cable lug to the RTN terminal. Tighten the screw until snug. Do not overtighten. Apply between 8 lb-in. (0.9 Nm) and 9 lb-in. (1.02 Nm) of torque to the screw.
8. Using the other removed screw, secure the negative (–) DC source power cable lug to the –48 VDC terminal. Tighten the screw until snug. Do not overtighten. Apply between 8 lb-in. (0.9 Nm) and 9 lb-in. (1.02 Nm) of torque to the screw.

   Note: Each power supply must be connected to a dedicated DC power feed. For information about connecting to DC power sources, see Connecting Power.

9. Dress the power cables appropriately.
10. Replace the clear plastic cover over the terminal block.
11. Verify that the power cord does not block access to router components or drape where people might trip on it.
12. Press and release the power button to power on the router. Verify that the POWER LED lights steadily.

Figure 79: Installing a DC Power Supply