Juniper MX10004 Hardware Manual page 191

SIB 3 through SIB 5 are located behind the right fan tray. You must remove the appropriate fan tray to
access the failing SFB. See
If you plan to replace one or more Switch Fabric Boards (SFBs), make sure you calculate the time
required to remove the fan tray, add or replace the SFBs, and install the fan tray in the chassis. To
calculate the time allowed for replacing a SFB, see
Ensure that you have the following equipment on hand before replacing a SFB:
• Electrostatic bag or antistatic mat
• Electrostatic discharge (ESD) grounding strap
• Phillips (+) number 2 screwdriver (optional)
• Replacement SFB or SFB cover (JNP10K-SF-BLNK) for the empty slot
CAUTION: Do not remove the SFB unless you have a replacement SFB or a SFB cover
(JNP10004-SF-BLNK) available.
NOTE: If you are not installing another SFB into the empty card slot within a short time, install
the SFB cover into the slot to maintain proper airflow in the card cage.
NOTE: When replacing the fans or SFBs at 40° C chassis ambient temperature, ensure that the
fans run at 100% fan speed for at least 10 minutes before replacing the fans or SFBs. Use the
test chassis fan tray 0 speed
the chassis fans to 100% speed.
After replacing the fans or SFBs, set the fans to normal speed using the test chassis fan tray 0
speed normal and test chassis fan tray 1 speed normal command.
To remove an MX10004 Switch Fabric Board:
1. Take the SFB offline using the request chassis sfb slot
NOTE: If you suspect the SFB is faulty and want to ensure that packets do not flow through
the SFB, power off the SFB instead of taking the SFB offline. To power down the SFB, use the
slot-number offline command. Before you bring a new SFB in that slot online,
set chassis sfb
you must delete the old configuration using the delete chassis sfb slot
command.
"Remove an MX10004 Fan Tray" on page
Table 52 on page
full-speed and test chassis fan tray 1 speed full-speed commands to set
166.
175.
slot-number offline command.
slot-number offline
181