[AS57/58/67/68 series] FAN failure Follow

For the FAN abnormal, please boot the switch into Accton Diag. for further troubleshooting. 

Step1. Check the FAN LED on the front panel (system LED) 

The following figure is the system LED location.

The following figure is the definition of the system FAN LED.

If FAN LED is Amber/Orange, thus one or multiple FAN module get problem.

Step2. Check the LED status on the FAN module.

If LED of the FAN module is green, it's no problem (PASS).

If LED of the FAN module is red, it's the problem. (FAIL)

Step3. Identify the FAN number.

The following figure is an AS5712-54X and AS5812-54X, AS5812-54T schematic diagram of FANs.

The following figure is an AS6712-32X and AS6812-32X schematic diagram of FANs.

Step 4.  Execute (024 or 025) Fan Speed Test on Accton Diag 

For AS5712-54X and AS5812-54X, AS5812-54T: 024

For AS6712-32X and AS6812-32X: 025

Example 1:  

diag# diag_main
Diagnostics 1.0.0.4
**********************************************************************
(001) DDR free memory test
.
(025) Fan Speed Test
.
Please enter your choice(Enter 0 to quit): 025
tmp_str=normal

FAN related information:
==========================================
FAN direction detect :
FAN 1 direction = Front to back
FAN 2 direction = Front to back
FAN 3 direction = Front to back
FAN 4 direction = Front to back
FAN 5 direction = Front to back
==========================================

Fan test for 50% speed
FAN 1 : 11550 RPM ( 0x4d for reg_value )
 Result - Passed
FANR 1 : 9750 RPM ( 0x41 for reg_value )
 Result - Passed
FAN 2 : 11400 RPM ( 0x4c for reg_value )
 Result - Passed
FANR 2 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed
FAN 3 : 11550 RPM ( 0x4d for reg_value )
 Result - Passed
FANR 3 : 9450 RPM ( 0x3f for reg_value )
 Result - Passed
FAN 4 : 11550 RPM ( 0x4d for reg_value )
 Result - Passed
FANR 4 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed
FAN 5 : 11400 RPM ( 0x4c for reg_value )
 Result - Passed
FANR 5 : 9750 RPM ( 0x41 for reg_value )
 Result - Passed

Fan test for 100% speed
FAN 1 : 21000 RPM ( 0x8c for reg_value )
 Result - Passed
FANR 1 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed
FAN 2 : 21000 RPM ( 0x8c for reg_value )
 Result - Passed
FANR 2 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed
FAN 3 : 21000 RPM ( 0x8c for reg_value )
 Result - Passed
FANR 3 : 17700 RPM ( 0x76 for reg_value )
 Result - Passed
FAN 4 : 21450 RPM ( 0x8f for reg_value )
 Result - Passed
FANR 4 : 17850 RPM ( 0x77 for reg_value )
 Result - Passed
FAN 5 : 21300 RPM ( 0x8e for reg_value )
 Result - Passed
FANR 5 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed

Item (25) test result : SUCCESS

Example 2:  FAN 3 failure

Please enter your choice(Enter 0 to quit): 025
tmp_str=normal

FAN related information:
==========================================
FAN direction detect :
FAN 1 direction = Front to back
FAN 2 direction = Front to back
FAN 3 direction = Front to back
FAN 4 direction = Front to back
FAN 5 direction = Front to back
==========================================

Fan test for 50% speed
FAN 1 : 11400 RPM ( 0x4c for reg_value )
 Result - Passed
FANR 1 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed
FAN 2 : 11400 RPM ( 0x4c for reg_value )
 Result - Passed
FANR 2 : 9750 RPM ( 0x41 for reg_value )
 Result - Passed
FAN 3 : 15900 RPM ( 0x6a for reg_value )
 Result - Failed (out of the range with +/- 20 percent from 8600 ~ 12900 rpm)
FANR 3 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed
FAN 4 : 11550 RPM ( 0x4d for reg_value )
 Result - Passed
FANR 4 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed
FAN 5 : 11400 RPM ( 0x4c for reg_value )
 Result - Passed
FANR 5 : 9600 RPM ( 0x40 for reg_value )
 Result - Passed

Fan test for 100% speed
FAN 1 : 21000 RPM ( 0x8c for reg_value )
 Result - Passed
FANR 1 : 17850 RPM ( 0x77 for reg_value )
 Result - Passed
FAN 2 : 21150 RPM ( 0x8d for reg_value )
 Result - Passed
FANR 2 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed
FAN 3 : 0 RPM ( 0x0 for reg_value )
 Result - Failed (out of the range with +/- 20 percent from 17200 ~ 25800 rpm)
FANR 3 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed
FAN 4 : 21600 RPM ( 0x90 for reg_value )
 Result - Passed
FANR 4 : 18000 RPM ( 0x78 for reg_value )
 Result - Passed
FAN 5 : 21450 RPM ( 0x8f for reg_value )
 Result - Passed
FANR 5 : 17850 RPM ( 0x77 for reg_value )
 Result - Passed

Item (25) test result : FAILURE

All above, indicate one or multiple FAN get problems, please return the unit back for RMA repair service.