29-9
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 29 Replacing Parts
Replacing the Fan Assembly
Step 5
Screw in the thumb-screw on the right side of the power supply assembly until it is finger tight.
Step 6
Flip the retaining bracket up and tighten its thumbscrew.
Step 7
Reinstall the Air Intake Grille and press firmly on the top, center of the Air Intake Grille until the latch
snaps into place.
Step 8
Check the status and output voltage of the replacement power supply using the
dspasm
command. Make
sure the status is OK and the output voltage is 48V.
Replacing the Fan Assembly
The Fan Assembly provides the primary cooling for the BPX switch and is located at the top, rear of the
BPX switch cabinet.
There are three fans in the Fan Assembly. The fan on the right (number 1) and the one on the left (number
3) can be changed out individually with very little effort or interruption in the operation of the node.
However, to replace the fan in the middle (number 2) you must first power down the node and remove
the Fan Assembly.
Caution
You must work quickly but carefully to prevent heat buildup in the node, which could damage the
cards.
To replace fan number 1 or number 3 in the Fan Assembly, use the following procedure:
Step 1
Use the
dspasm
command to check the status of the three fans.
Step 2
From the rear of the BPX switch, visually check that the fan(s) is indeed not turning or turning slowly.
Step 3
From the back of the cabinet, unplug the small fan power cord from its appropriate receptacle on the Fan
Assembly.
Step 4
Remove the two screws holding the fan and the fan shield to the-fan housing. Be careful not to drop the
hardware into the rear of the cabinet.
Step 5
Remove the fan. Replace the fan in reverse order. Use the existing fan grille.
To replace fan number 2 requires powering down the node and replacing the whole Fan Assembly. Under
normal ambient room temperatures, this can be scheduled for the next available quiet time.
To replace fan number 2, use the following procedure:
Step 1
Use the
dspasm
command to check the status of the three fans.
Step 2
From the rear of the BPX switch, visually check that fan number 2 is not turning or turning slowly.
Step 3
At the rear of the BPX switch, turn the circuit breakers OFF to power down the node.
Step 4
Loosen the eight captive screws holding the Fan Assembly in place.
Step 5
With one hand, pull the Fan Assembly back just far enough to gain access to the Fan Assembly power
cord. This cord connects to the Fan Assembly to the backplane.
Step 6
Unplug the power cord and remove the Fan Assembly.
Summary of Contents for BPX 8650
Page 49: ...P A R T 1 The BPX Switch ...
Page 50: ......
Page 159: ...P A R T 2 Installation ...
Page 160: ......
Page 273: ...P A R T 3 Initial Configuration and Network Management ...
Page 274: ......
Page 311: ...P A R T 4 Configuring Connections ...
Page 312: ......
Page 487: ...P A R T 5 Troubleshooting and Maintenance ...
Page 488: ......
Page 533: ...P A R T 6 BPX Specifications ...
Page 534: ......
Page 555: ...P A R T 7 Appendices ...
Page 556: ......