[Wedge100BF-32X] FAN

Purpose:

This is the troubleshooting guide for the Fan on Wedge100BF-32X.

Procedure:

Step 1. Specify the problem is on Fan or Fan slot

If the LED of Fan lights Blue means work well, Red means no insert or have some kind of problem.

Use Cross Comparison tests to judge which has the problem, Fan or Fan slot.

There are 5 Fans in one device, swap these Fans to do the Cross Comparison tests.

Note: The Cross Comparison can test when the power on, exchanges 2 of these 5 Fans.

According to the result, decide to run the RMA process with only specific Fan or switch.

If the problem is the Fan speed seems not fit the Thermal Policy, for example, normal temperature but high Fan speed(noisy),or high temperature but didn't raise up the Fan speed, please check the article to judge whether the Fan speed follow the Thermal Policy :

[Wedge100BF-32X] Thermal Control Policy with Fan

Step 2. Login OpenBMC to dump the Fan speed

Use "ctrl + x" to switch into BMC, default username/password is root/0penBmc

Note: The password is "0"(zero)penBmc

root@bmc:~# get_fan_speed.sh
Fan 1 RPMs: 12150, 9900, (67%)
Fan 2 RPMs: 12150, 9900, (67%)
Fan 3 RPMs: 12300, 9750, (67%)
Fan 4 RPMs: 12300, 9900, (67%)
Fan 5 RPMs: 12300, 9750, (67%)

Note: If any of the Fan is defective, it should be different percentage from others.

"sol.sh" switch back to COME.

root@bmc:~# sol.sh
You are in SOL session.
Use ctrl-x to quit.
-----------------------


root@bfn-switch:~#

Step 3. Login Diag mode to dump the log to us.

To login Diag, please refer to the article: Install and start up Accton Diag

Choose item "72 The Fan speed test" to test.

*********************************************************
(...omitted)
72 The Fan speed test
(...omitted)
*********************************************************
Please enter your choice (0 to quit): 72
set_fan_speed.sh 1 30
set_fan_speed.sh 2 30
set_fan_speed.sh 3 30
set_fan_speed.sh 4 30
set_fan_speed.sh 5 30
(...omitted)
FAN speed test is passed(0, 8, 5, 70).

Item (72) test result: PASSED

Note: This item tests Fans in every specific RPMs, It can be a good RMA judgement material.