Juniper MX10008 Hardware Manual page 185

See Figure 81 on page 187
Figure 81: JNP10008-FAN-CTRL
Figure 82: JNP10008-FTC2
CAUTION:
available.
To access a fan tray controller, you must first remove the fan tray. With the fan tray removed, the fan tray
controller is installed horizontally above the Switch Fabric Boards (SFBs) at the top of the chassis.
Before you remove a fan tray controller:
Ensure you understand how to prevent ESD damage. See
on page 343.
Ensure that you have the following parts and tools available to remove a fan tray controller:
Electrostatic discharge (ESD) grounding strap
An electrostatic bag or an antistatic mat
Replacement fan tray controller
A Phillips (+) screwdriver, number 1, for the captive screws
for JNP10008-FAN-CTRL and
Do not remove the fan tray controller unless you have a replacement controller
Figure 82 on page 187.
"Prevention of Electrostatic Discharge Damage"
187