UAM 0302 * SYSTEM Cooling Fan Failure

Asset ID:	1-72-2167375.1
Update Date:	2016-08-08
Keywords:

Solution Type Problem Resolution Sure

Solution 2167375.1 : UAM 0302 * SYSTEM Cooling Fan Failure

Applies to:

Oracle Communications EAGLE (Software) - Version EAGLE 3x.x and later
Information in this document applies to any platform.

Symptoms

The UAM .0302 * SYSTEM Cooling Fan Failure is reported since the installation of the FAN trays.
This is an Eagle with a control frame only. FAN trays P/N: 890-0001-04, power cable: 830-1128-01R5

Cause

This is actually a fake alarm

All LEDs are fine.
All fuses are ok (6, 12, 18)
Each FAN has been replaced with a new one (one at at time).
All cables have been checked, including power cables.
The clock B cable, involved in transmitting the FAN alarms, has completely been removed and replugged
The filters have been cleaned
The logs have been formatted with the copy-tbl command
The MASPs have been switched.
The alarm is here since the legacy MASP and are still present now with the E5-MASP cards
The below test procedure described in the Eagle documentation has been performed :

Step 7. Fan Verification (perform Step 7 through Step 12 for each fan assembly).
Move to the rear of the frame and remove the A POWER cable from the FAN unit.
Result: Fan 2 and Fan 3 LEDs will blink as the fans speed up to maximum speed. This may take up to 15 seconds.
Once maximum speed has been reached Fan 2 and Fan 3 LEDs on the Fan Controller card will be solid green.
Fan 1 LED should be red.
The controller LED should be blinking green.
Fan 1 should stop running and the MINOR LED is lit

Step 8. At the system terminal enter the command: rept-stat-trbl
This step is repeated for each fan. Test each fan to ensure that the alarm and the units are working correctly.
Result: The terminal reports: # 302 Cooling Fan Normal.

Step 9. Replace the A POWER cable on the back of the FAN unit and secure the connector.
Result: All fans are running and the MINOR LED is not lit.
Terminal reports alarm: # 303 Cooling Fan Normal

Step 10. Remove the B POWER cable from the FAN unit.
Result: Fan 1 and Fan 2 LEDs will blink as the fans speed up to maximum speed. This may take up to 15 seconds.
Once maximum speed has been reached Fan 1 and Fan 2 LEDs will be solid green.
Fan 3 LED should be red.
The fan controller LED should be blinking.
Fan 3 should stop running and the MINOR LED is lit.

Step 11. At the system terminal enter the command: rept-stat-trbl
Test each fan to ensure that the alarms and the unit is working correctly.
Result: The terminal reports: # 302 Cooling Fan Normal.

Step 12. Replace the B POWER cable on the back of the FAN unit and secure the connector.
Result: The fans are running and the MINOR LED is not lit.
The terminal reports alarm: # 303 Cooling Fan Normal.

Step 13. Repeat Step 7 through step 12 for each fan

Fuse verification :

1) Verify Fuses: the fuse card will be marked FAN A and FAN B, fuse positions 6, 12, and 18 (A and B).
   a) Fuse position 6 is for the fan unit directly below the control shelf.
   b) Fuse position 12 is for the fan directly below the 1200 shelf.
   c) Fuse position 18 is for the fan directly below the 1300 shelf.
2) All fans are to be fused at 2 amps (with orange flags) per feed.
3) At the rear of the frame, verify the A power cable from the A fan assembly is securely attached.
4) At the rear of the frame, verify the B power cable from the B fan assembly is securely attached.

Solution

Make shelf Fans ON :

eaglestp 16-05-05 11:19:05 EST EAGLE5 45.0.1-64.70.35
SHELF DISPLAY
FRAME SHELF TYPE       FAN
1     1     CONTROL    ON
1     2     EXTENSION OFF
1     3     EXTENSION OFF

And apply this MOP : False_Fan_Alarm_Isolation_MOP_-_cgbu_cs_2058.pdf.

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