Juniper EX9253 Hardware Manual page 150

• If there are any transceivers installed in the line card, remove them before you remove the line card
Remove a Transceiver
(see
• Ensure that you know how to handle and store the line card (see
and maintain line card cables (see
Ensure that you have the following parts and tools available to remove a line card from an EX9253
switch chassis:
• ESD grounding strap
• An antistatic bag or an antistatic mat
• Replacement line card or a cover panel and its screws to cover the empty slot
EX9253 switches have field-replaceable unit (FRU) line cards that can be installed in the line card slots
on the front of the switch chassis. The line cards are hot-insertable and hot-removable: You can remove
and replace them without powering off the switch or disrupting switch functions. However, we
recommend that you take them offline before removing them. To maintain proper cooling, you must
install a replacement line card or a blank panel in the line card slot shortly after removing a line card from
the chassis.
To remove a line card from an EX9253 switch (see
1. Place the antistatic bag or antistatic mat on a flat, stable surface.
2. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the switch.
3. Label the cables connected to each port on the line card so you can reconnect the cables to the
correct ports.
4. Use one of the following methods to take the line card offline:
• Press and hold the OFFLINE button on the line card by using a narrow-ended tool that fits inside
the opening that leads to the button until the OK/FAIL LED next to the button is unlit. You must
not use any sharp object to press the OFFLINE button.
• Issue the following CLI command:
user@switch>request chassis fpc slot slot-number offline
5. Rotate the ejector handles simultaneously counterclockwise to unseat the line card.
CAUTION: Do not lift the line card by holding the ejector handles on the faceplate or
the edge connectors. A fully configured line card can weigh up to 18.35 lb (8.3 kg). The
ejector handles cannot support the weight of the line card. Lifting the line card by the
Remove a QSFP28 Transceiver
or
Maintaining Line Card Cables
Figure 55 on page
).
Handling and Storing Line Cards
).
142):
141
)