Juniper CBL-M40-PWR-AU ユーザーズマニュアル
Maintain and Replace Packet Forwarding Engine Components
Replace a PIC
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Replace a PIC
PICs are housed in the FPCs installed in the front of the router, as shown in Figure 4.
Quad-wide PICs, such as the OC-48/STM-16 SONET/SDH PIC, occupy an entire FPC slot and
are hot-removable and hot-insertable, as described in “Field-Replaceable Units (FRUs)” on
page 4. For replacement instructions, see “Replace an FPC or Quad-wide PIC” on page 163.
Quad-wide PICs, such as the OC-48/STM-16 SONET/SDH PIC, occupy an entire FPC slot and
are hot-removable and hot-insertable, as described in “Field-Replaceable Units (FRUs)” on
page 4. For replacement instructions, see “Replace an FPC or Quad-wide PIC” on page 163.
A regular PIC, which installs into a four-slot FPC card carrier, is hot-removable and
hot-insertable in the sense that removing it does not disrupt routing functions; however, you
must completely remove its host FPC from the chassis before removing the PIC, which
affects all PICs on the FPC.
hot-insertable in the sense that removing it does not disrupt routing functions; however, you
must completely remove its host FPC from the chassis before removing the PIC, which
affects all PICs on the FPC.
To replace a PIC, perform the following procedures:
Remove a PIC
To remove a PIC from an FPC, follow this procedure (see Figure 77):
1.
Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the PIC.
2.
Attach an ESD strap to your bare wrist and connect the strap to one of the ESD points on
the chassis.
the chassis.
3.
Follow the instructions in “Remove an FPC or Quad-wide PIC” on page 163 to remove
the PIC’s host FPC from the chassis. Lay the FPC on an antistatic foam mat on a flat,
stable surface. If a foam mat is not available, substitute a standard flat antistatic mat but
use extra care when laying the FPC component side down on it, to avoid damaging the
electrical components.
the PIC’s host FPC from the chassis. Lay the FPC on an antistatic foam mat on a flat,
stable surface. If a foam mat is not available, substitute a standard flat antistatic mat but
use extra care when laying the FPC component side down on it, to avoid damaging the
electrical components.
4.
With the FPC lying component side down and the PIC faceplates facing you, use a
Phillips screwdriver to loosen the two screws that secure the PIC to the FPC.
Phillips screwdriver to loosen the two screws that secure the PIC to the FPC.
5.
Carefully turn over the FPC and lay it on the mat component side up with the PIC
faceplates facing you.
faceplates facing you.
6.
Pull the PIC straight out of the FPC slot.
7.
Place the PIC in the electrostatic bag or on the antistatic mat prepared in Step 1.
You might need to rock the PIC back and forth to loosen it
from the connector in the FPC slot. To avoid bending the
pins on the connector, use the smallest and gentlest
motion possible.
from the connector in the FPC slot. To avoid bending the
pins on the connector, use the smallest and gentlest
motion possible.