Juniper PTX10008 Hardware Manual page 261

Installing a PTX10000 Fan Tray Controller
For each of the two fan trays, there is a fan tray controller. Each controller is a hot-removable and
hot-insertable field-replaceable unit (FRU); you can remove and replace one fan tray controller while the
router is running without turning off power to the router or disrupting routing functions. There are two
models of fan tray controller for the PTX10008, JNP10008-FAN-CTRL and JNP10008-FTC2. There are
also two models of fan tray controller for the PTX10016, JNP10016-FAN-CTRL and JNP10016-FTC2.
See Figure 124 on page 265
Figure 124: JNP10008-FAN-CTRL
Figure 125: JNP10008-FTC2
CAUTION:
available.
In order to access a fan tray controller, you must first remove the associated fan tray. With the fan tray
removed, the fan tray controller is installed horizontally above the Switch Interface Boards (SIBs) at the
top of the chassis.
Before you replace a fan tray controller:
Ensure you understand how to prevent ESD damage. See
on page 427.
and Figure 125 on page
Do not remove the fan tray controller unless you have a replacement controller
265.
"Prevention of Electrostatic Discharge Damage"
265