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FPCs for the M40e Router
This section describes the chassis, the supported FPCs, and how to replace
FPCs for the M40e router.
Chassis Description
In an M40e router, you can install up to eight FPCs vertically into
the midplane from the front of the chassis. You reference each FPC by its
slot number. Slots are numbered FPC0 to FPC7 from left to
right in the chassis. Each FPC holds up to four PICs (except the M40e FPC2,
which holds only one).
FPC Descriptions
This section describes the types of FPCs that the M40e router supports.
The M40e router supports five types of FPCs:
- FPC—Rated at 3.2 Gbps full duplex; holds up to four PICs.
- FPC1—Rated at 3.2 Gbps full duplex; holds up to four lower-speed
PICs, such as those with single-port OC12/STM3 and Gigabit Ethernet interfaces.
The offline button for each PIC is on the FPC card carrier.
- FPC2—Rated at 3.2 Gbps full duplex; holds one higher-speed
PIC, such as those with an OC48/STM16 interface. The lower three slots in
the M40e FPC2 are covered by a blank panel. The offline button for the PIC
is on the PIC faceplate.
- Enhanced Plus FPC1—Rated at 3.2 Gbps full duplex; holds
up to four lower-speed PICs, such as those with single-port OC12/STM3 and
Gigabit Ethernet interfaces. The offline button for each PIC is on the FPC
card carrier. The M40e Enhanced Plus FPC is labeled with an EP sticker
on the faceplate.
- Enhanced Plus FPC2—Rated at 12.8 Gbps full duplex; holds
one higher-speed PIC, such as those with an OC48/STM16 interface. The offline
button for each PIC is on the FPC card carrier. The M40e Enhanced Plus FPC
is labeled with an EP sticker on the faceplate.
You can install any combination of these FPC types in the M40e router.
Figure 12 shows
the FPC, FPC1, and FPC2 that the M40e router supports. Figure 13 shows
the Enhanced Plus FPC1 and Enhanced Plus FPC2 that the M40e router supports.
Figure 12: M40e FPC, M40e FPC1, and M40e FPC2 for the M40e Router

Figure 13: Enhanced Plus FPCs for the M40e Router

Removing an FPC
The FPCs on an M40e router are installed into the front of the chassis
below the craft interface. Each FPC weighs up to 15 lb (6.8 kg).
To remove an FPC, follow this procedure:
-
Place an antistatic mat on a flat, stable surface to receive the FPC.
If you are removing an M40e FPC from an M40e router, use a foam mat; if a
foam mat is not available, use a standard flat antistatic mat, but use extra
care when laying the M40e FPC on it to avoid damaging the electrical components.
If any of the PICs on the FPC uses fiber-optic cable, also have ready a rubber
safety cap for each transceiver and cable.
- Attach an ESD strap to your bare wrist and connect the
strap to one of the ESD points on the chassis.
- Label the cables connected to each PIC on the FPC, so that
you can reconnect each cable to the correct PIC later.
- Take the FPC offline by pressing and holding down its offline
button for about 5 seconds or until the red FAIL LED next to
the button lights. The offline button for each FPC is on the craft interface
directly above the FPC slot.
- Disconnect the cables from the PICs on the FPC. If a PIC
uses fiber-optic cable, immediately cover each transceiver and the end of
each cable with a rubber safety cap. Carefully arrange the disconnected cables
in the cable management system directly below the FPC card cage to prevent
the cables from developing stress points.
 |
Do not look directly into the ends of fiber-optic cables or into the
transceivers on the interface faceplate. Single-mode fiber-optic cable and
the interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser
light that can damage your eyes.
|
 |
Do not leave a fiber-optic transceiver uncovered except when inserting
or removing cable. The safety cap keeps the port clean and prevents accidental
exposure to laser light.
|
 |
Avoid bending fiber-optic cable beyond its minimum bend radius. An arc
smaller than a few inches in diameter can damage the cable and cause problems
that are difficult to diagnose.
|
- If you must remove or replace PICs in an M40e FPC1 or M40e
FPC2 , do so now, before removing the FPC from the chassis. For instructions,
see the M40e Internet Router Hardware Guide. If you are removing or replacing PICs in an M40e
FPC, wait until Step Step 12.
- Unscrew the thumbscrews at the top and bottom of the FPC.
- Pull the ends of the ejector levers, which are adjacent
to the thumbscrews, away from the face of the FPC until they are nearly perpendicular
to it (see Figure 14).
- Grasp the FPC with both hands and slide it about halfway
out of the chassis.
- Place one hand under the FPC to support it, and slide it
completely out of the chassis.
- Set the FPC on the antistatic foam mat that you prepared
in Step Step 1.
 |
The weight of the FPC is concentrated in the back end. Be prepared to
accept the full weight—up to 15 lb (6.8 kg)—as you slide the FPC
out of the chassis.
Do not hold the FPC by the ejector levers, bus bars, or edge connectors.
They cannot support its weight.
To avoid damaging any components, use extra care when laying an M40e
FPC component-side up on the antistatic mat, particularly if the mat is not
made of foam.
Do not stack the FPC on top of or under any other component.
|
-
If you are removing or replacing PICs on an M40e FPC, see the PIC,
SFP, and XENPAK Installation Instructions.
Figure 14: Removing an
FPC from an M40e Router

Installing an FPC
To install an FPC into an M40e router, follow this procedure:
- Attach an ESD strap to your bare wrist and connect
the strap to one of the ESD points on the chassis.
- If you are installing an M40e FPC, you can remove or replace
PICs now, before installing the M40e FPC into the chassis. See the PIC,
SFP, and XENPAK Installation Instructions.
If you are installing an M40e FPC1 or M40e FPC2 into an M40e router,
wait to remove or replace PICs until Step Step 7.
If any PICs already installed in the FPC uses fiber-optic cable, make
sure that each transceiver is covered with a rubber safety cap.
- Verify that the ends of the ejector levers, which are at
the top and bottom of the FPC, are pushed outward and nearly perpendicular
to the face of the FPC.
- Grasp the front of the FPC with one hand, and place the
other hand under the FPC to support it.
 |
Do not hold the FPC by the ejector levers, bus bars, or edge connectors.
They cannot support its weight.
|
- Align the bottom rear corners of the FPC with the guides
at the bottom of the desired FPC slot. Slide the FPC all the way into the
card cage until it contacts the midplane.
 |
When an M40e FPC is installed in the chassis, the lettering on the faceplates
of the PICs is upside down.
|
- Push the ends of the ejector levers inward until they are
nearly flush with the face of the FPC (see Figure 15).
-
If you are installing an M40e FPC1 or M40e FPC2 into an M40e router,
you can remove or replace PICs at this point. For instructions, see the M40e Internet Router Hardware Guide.
- If any PICs on the FPC connect to fiber-optic cable, remove
the rubber safety cap from each transceiver and cable.
 |
Do not look directly into the ends of fiber-optic cables or into the
transceivers on the interface faceplate. Single-mode fiber-optic cable and
the interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser
light that can damage your eyes.
|
- Insert the appropriate cable into the cable connector ports
on each PIC on the FPC. Secure the cables so that they do not support their
own weight. Use the cable management system to place excess cable out of the
way in a neatly-coiled loop. Placing fasteners on a loop helps to maintain
its shape.
 |
Do not let fiber-optic cable hang free from the connector. Do not allow
fastened loops of cable to dangle, which stresses the cable at the fastening
point.
|
 |
Avoid bending fiber-optic cable beyond its minimum bend radius. An arc
smaller than a few inches in diameter can damage the cable and cause problems
that are difficult to diagnose.
|
- Press and hold the FPC offline button (on the craft interface
above the slot that houses the FPC) to bring the FPC and PICs online. When
the FPC is online, the FPC LED labeled OK on the craft interface
lights steadily, and you can release the offline button.
Figure 15: Installing
an FPC into an M40e Router

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