Replacing Hardware Components
Figure 91: Installing a PCG
1930
PCG 0
SFM 0
SFM 1
MCS 0
RE 0
RE 1
MCS 1
PCG 1
Replacing a PIC
PICs are housed in the FPCs installedin the front of the router, as shown in Figure1.
PICs are hot-removableand hot-insertable, as described in Field-Replaceable Units
(FRUs) on page 4. Removing a PIC does not affect router function, exceptthat the
PIC no longer receives or transmitsdata.
To replace a PIC, perform the following procedures:
Removing a PIC on page 179
Installing a PIC on page 181
Removing a PIC
To remove a PIC, follow this procedure (see Figure 92):
1. Place an electrostaticbag or antistatic mat on a flat, stable surface to receive
the PIC. If the PIC connects to fiber-optic ca ble,have ready a rubber safety
cap for each transceiverand cable.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wris t and
connect the strap toone of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see
“Preventing ElectrostaticDischarge Damage” on page 226.
3. If the PIC has multiple cableconnector ports, label the cable connected to each
port, to make it easier to reconnect the cables correctly.
Replacing Packet ForwardingEngine Components 179