Reinstalling the M40e Components into the Chassis

After you have mounted the chassis in the rack as described in Installing the M40e Chassis into the Rack, reinstall the router components into the chassis.

Warning: The procedures in this section apply only to initial installation and assume that you have not yet connected power to the router. If power is connected, completely disconnect it before continuing. See Disconnecting AC Power from the M40e Router or Disconnecting DC Power from the M40e Router.

Reinstall components into the chassis, first into the front and then into the rear:

Reinstalling the Front Impeller Assembly

The front impeller assembly, which includes the craft interface, is located at the top of the chassis front, as shown in M40e Chassis Description. To reinstall it (see Figure 1):

1. 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 to an M Series, MX Series, or T Series Router.
2. Grasp the sides of the impeller assembly and align the rear of the assembly with the guides inside the chassis.
3. Slide the impeller assembly all the way into the chassis.
4. Using a Phillips screwdriver, tighten the captive screw at each corner of the craft interface.

Figure 1: Reinstalling the M40e Front Impeller Assembly

Reinstalling the FPCs

The FPCs install into the card cage at the front of the chassis, as shown in M40e Chassis Description.

Note: To help you work systematically, reinstall FPCs starting at the left side of the card cage and working toward the right. You can install FPCs in any order, however. Be sure there is a blank panel over every empty slot. The blank panels must be in place during router operation to guarantee adequate circulation of cooling air.

To reinstall the FPCs (see Figure 2):

1. 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 to an M Series, MX Series, or T Series Router.
2. Locate the leftmost slot in the FPC card cage on the front of the chassis. It is directly below the offline button on the craft interface that is labeled FPC0. Locate the FPC that you labeled FPC0 during removal.
3. Verify that the ends of the ejector levers, which are located at each end of the FPC, are pushed outward, nearly perpendicular to the face of the FPC.
4. Grasp the front of the FPC with one hand and place the other hand under the FPC to support it.

   Caution: When the FPC is out of the chassis, do not hold it by the ejector levers, bus bars, or edge connectors. They cannot support its weight.

5. Align the rear bottom corners of the FPC with the guides at the bottom of the FPC slot. Slide the FPC into the card cage until it contacts the midplane.
6. Push the ends of the ejector levers inward until they are nearly flush with the face of the FPC.
7. Tighten the thumbscrew at each end of the FPC to seat the FPC securely in the chassis.
8. Repeat the procedure for each FPC, proceeding from left to right through the slots with offline buttons labeled FPC1 through FPC7 on the craft interface.

Figure 2: Reinstalling an M40e FPC

Reinstalling the Fan Tray

The fan tray, which includes the cable management system, is located on the front of the chassis, just above the air filter, as shown in M40e Chassis Description. To reinstall it (see Figure 3):

1. 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 to an M Series, MX Series, or T Series Router.
2. Grasp the sides of the fan tray and align the rear of the tray with the guides inside the chassis.
3. Slide the fan tray all the way into the chassis.
4. Tighten the thumbscrew at each end of the cable management system.

Figure 3: Reinstalling the Fan Tray

Reinstalling the Rear Lower Impeller Assembly

The rear lower impeller assembly is located to the left of the circuit breaker box on the rear of the chassis, as shown in M40e Chassis Description. To reinstall it (see Figure 4):

1. 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 to an M Series, MX Series, or T Series Router.
2. Orient the impeller so that the label is on the top. Align the rails on the upper edges of the impeller assembly with the guides inside the chassis.
3. Push the impeller assembly up and to the right to start it into the chassis, then slide it all the way in.
4. Tighten the thumbscrew at each corner of the impeller cover.

Figure 4: Reinstalling the Rear Lower Impeller Assembly

Reinstalling the Rear Upper Impeller Assembly

The rear upper impeller assembly is installed at the top of the chassis rear, as shown in M40e Chassis Description. To reinstall the assembly (see Figure 5):

1. 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 to an M Series, MX Series, or T Series Router.
2. Slide the assembly all the way into the chassis.
3. Tighten the thumbscrew at each corner of the impeller cover.

Figure 5: Reinstalling the Rear Upper Impeller Assembly

Reinstalling the Routing Engines

The router can have a Routing Engine in each of the slots labeled RE 0 and RE 1 at the rear of the chassis, as shown in M40e Chassis Description.

Note: If two Routing Engines are installed, they must both be the same hardware model.

To reinstall a Routing Engine (see Figure 6):

1. 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 to an M Series, MX Series, or T Series Router.
2. Verify that the extractor clip at each end of the Routing Engine is flipped toward the outer edge of the unit. If necessary, use your thumbs to push and hold the red tab on each extractor clip toward the outer edge, then push the ends of the extractor clips outward.
3. Place one hand under the Routing Engine to support it and grasp one of the extractor clips on the faceplate with the other hand.
4. Align the rear of the Routing Engine with the guide rails inside the chassis and slide it in completely.

   Caution: Align the Routing Engine carefully with the guide rails and push it in evenly. Damage can result if the Routing Engine gets lodged in the rails because of uneven movement.

5. Press the extractor clip at each end of the Routing Engine inward to seat the unit firmly in the chassis.

If there is a second Routing Engine, repeat the procedure to reinstall it.

Figure 6: Reinstalling a Routing Engine

Reinstalling the PCGs

The router has two PCGs installed in the slots labeled PCG 0 and PCG 1 at the rear of the chassis, as shown in M40e Chassis Description. To reinstall the PCGs (see Figure 7):

1. 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 to an M Series, MX Series, or T Series Router.
2. Place one hand under the PCG to support it and grasp the thumbscrew on the faceplate with the other hand.
3. Align the rear of the PCG with the guides inside the chassis and slide it in completely.
4. Tighten the thumbscrew on the faceplate to seat the PCG firmly in the chassis.
5. Repeat the procedure to reinstall the second PCG.

Figure 7: Reinstalling a PCG

Reinstalling the MCSs

The router can have an MCS in each of the slots labeled MCS 0 and MCS 1 at the rear of the chassis, as shown in M40e Chassis Description. To reinstall an MCS (see Figure 8):

1. 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 to an M Series, MX Series, or T Series Router.
2. Place one hand under the MCS to support it and grasp one of the extractor clips on the faceplate with the other hand.
3. Align the rear of the MCS with the guides inside the chassis and slide it in completely.
4. Press the extractor clip at each end of the MCS inward.

If there is a second MCS, repeat the procedure to reinstall it.

Figure 8: Reinstalling an MCS

Reinstalling the SFMs

The router can have an SFM in each of the slots labeled SFM 0 and SFM 1 at the rear of the chassis, as shown in M40e Chassis Description. To reinstall an SFM (see Figure 9):

1. 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 to an M Series, MX Series, or T Series Router.
2. Verify that the ends of the ejector handles are pulled outward to a position nearly perpendicular to the faceplate of the SFM or CFEB-E.
3. Place one hand under the SFM or CFEB-E to support it and grasp one of the ejector handles at the front with the other hand.
4. Align the rear of the SFM or CFEB-E with the guides inside the chassis and slide it in completely.
5. Press the ejector handle at each end of the SFM or CFEB-E inward.
6. Tighten the thumbscrew on each ejector locking tab (shown in M40e SFM LEDs) to seat the SFM or CFEB-E firmly in the chassis.

If there is a second SFM, repeat the procedure to reinstall it.

Figure 9: Reinstalling an SFM

Reinstalling the Rear Component Cover

The rear component cover protects the Routing Engines, PCGs, MCSs, and SFMs, as shown in M40e Chassis Description. To reinstall the rear component cover:

1. 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 to an M Series, MX Series, or T Series Router.
2. Hold the component cover up to the rear of the chassis and align the flanges at the top and bottom with the top and bottom of the opening in the chassis.
3. Push the cover into place.
4. Tighten the thumbscrew at each corner of the cover.

   Caution: To maintain proper airflow and provide electromagnetic shielding, do not operate the router without the rear component cover in place.

Reinstalling the Power Supplies

The two power supplies (AC or DC) are located at the bottom rear of the chassis, as shown in M40e Chassis Description. To reinstall the power supplies (see Figure 10, which shows a DC power supply):

1. 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 to an M Series, MX Series, or T Series Router.
2. Verify that the power switch for each power supply is in the OFF (O) position. On an AC-powered router, the switch for each power supply is on the power supply faceplate. On a DC-powered router, the switches are on the circuit breaker box.
3. Place one hand under the power supply and grasp a handle on the faceplate with the other hand. Slide the power supply into the chassis until it contacts the midplane.
4. Starting with the bottom screws, tighten (but do not overtighten) the thumbscrew at each corner of the power supply faceplate.
5. Repeat the procedure to reinstall the second power supply.
6. To continue the installation, proceed to Connecting the M40e Router to Management and Alarm Devices.

Figure 10: Reinstalling a Power Supply