CHAPTER 28
Replacing Line Card Components
•
Replacing a T640 FPC on page 333
•
Replacing a T640 PIC on page 340
•
Replacing T640 PIC Cables on page 346
Replacing a T640 FPC
The FPCs are hot-insertable and hot-removable. When you remove an FPC, the router
continues to function, although the PIC interfaces installed on the FPC being removed
no longer function.
The router holds up to eight FPCs, which are installed vertically in the front of the router.
An empty FPC weighs approximately 25 lb (11.3 kg) and a fully configured FPC can weigh
up to 32 lb (14.5 kg).
1.
Removing a T640 FPC on page 333
2.
Installing a T640 FPC on page 336
Removing a T640 FPC
To remove an FPC (see Figure 164 on page 336):
1. Have ready a replacement FPC or FPC blank panel and an antistatic mat for the FPC.
Also have ready rubber safety caps for each PIC using an optical interface on the FPC
that you are removing.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
the strap to one of the ESD points on the chassis.
3. Label the cables connected to each PIC on the FPC so that you can later reconnect
the cables to the correct PICs.
4. Use one of the following methods to take the FPC offline:
•
Press and hold the FPC online/offline button. The green OK LED next to the button
begins to blink. Hold the button down until the LED goes out. The LEDs and
online/offline button for each FPC are located directly above it on the craft interface.
333Copyright © 2017, Juniper Networks, Inc.
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