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47
The fan tray continues to operate indefinitely and provide sufficient cooling even when a single rotor fails,
provided the room temperature is within the operating range. You can check the status of fans by viewing
the LEDs on each fan tray. See
"PTX10004 Fan Tray LEDs and Fan Tray Controller LEDs" on page
47.
You cannot replace a single fan. If one or more fans fail, you must replace the entire fan tray.
In addition to the fans in the fan trays, there is an internal fan in each power supply that also helps to cool
components, such as the line cards.
PTX10004 Fan Tray LEDs and Fan Tray Controller LEDs
IN THIS SECTION
Fan Tray LEDs | 47
Fan Tray Controller LEDs | 52
Each fan tray has a set of LEDs, and each corresponding fan tray controller also has a set of LEDs.
Fan Tray LEDs
Each fan tray has a set of five LEDs that represent the status of the fans in the fan tray, the fan tray
controller, and three of the Switch Interface Boards (SIBs). The LEDs are located on the top left corner of
each fan tray.
Figure 17 on page 48
shows the location of the LEDs on JNP10004-FAN2 fan trays.
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