Problem with redundant SX2000 main controller card

[thea3fund]

Hi there,

New to the forum after a recomendation from a colleague, so a Hello to everyone.

I have a problem with a redundant sx2000. When using the Show Fault Alarm from the maintainence terminal, active plane, a sub system message is displayed identifying a fault on MCC (1 1 7, Inactive plane b). On attempting an activity switch the system will switch to plane B, but then almost immediatly return to plane A. The sub system message can be seen from both the active and inactive plane and when viewed from the inactive plane, an additional message is displayed. SFT Zones - 5 1. I have replaced the Main controller (1 1 7) and the CSM card on the inactive plane. This has not solved the problem.

The spec is as follows :-

Software - Above Q stream. ( Exact not known, Yet!)
2 x Main controller cards 3E
2 x CSM cards
1 x control resource card (scheduled to be swapped tonight with a control resource 2 card)

Any help with this will be greatly apprecitaed guys.


Thanks from the Newbie

Joe

 

[Lundah]

What's the output of the "me mate" (message mate) maintenance command? Are the control planes partitioned? Any other alarms besides the message link?

 

[thea3fund]

Wow, speedy replies.

I havent tried the message mate command, but have been intsucted to use the "file stat redundancy" command.
Unfortunatly Im not on site as of yet, Im due to attened this evening circa midnight to replace the Control resource card as previously stated.

Is this advised or is the fault more likely to be due to another piece of hardware/programming?

Thanks again.

Joe

 

[MitelInMyBlood]

File Stat Red will give you the status of the redundant file system but from your description does not sound like that's where the problem is. The clue here is the System Fail Transfer Zone reporting 5 1

That tells me the inactive controller is unable to communicate with the peripheral Switch Controller in slot 16 of cabinet 5. However, over in cabinet 5 it's a common bus at that point so I'd be inclined to think the problem is with the MCC in 1-1-7 of the main control cabinet.

Do you have a spare MC-215 (MCC-IIIE card?) I think you're going to possibly need one.

In working on this I would be very much inclined to cover my butt and place an activity freeze on the machine first. Since we're not mucking around with the file system we shouldn't have to partition it, but putting the Activity Freeze on it will prevent it from attempting to switch planes.

If a new MC-215 card fixes it, remember to turn off the Activity Freeze before you leave.

 

[Lundah]

Sounds like he's already replaced the MCC in 1-1-7, which is why I was curious as to the state of the mate link.

Assuming the system isn't partitioned, my next SWAG would be to try replacing the MSX board (MC606 if my memory is any good). Replacing the MSX is a pain, it's the circuit board mounted on the left side of the control cabinet with the ribbon cables attached to it. You have to power down both control planes to replace it.

 

[thea3fund]

Hi guys,

Im on site now, just replaced the control resource card 2 and obviously rebooted the kit. Its come up ok, but there is still a fault. I have had a nosy round cab 5, namely slot 16 where the PSC is located and it doesnt seem to be cycling like the other PSC'S, I.e the card is displaying only 1 green LED, no digits are being displayed as per the other PSC's. I do belive this itself could be the fault. Any more information will be greatly appreciated.

Once again, thanks for your support chaps.

Joe

 

[Lundah]

Based on your description, it's likely a bad PSC (MC312AB). If the green LED on the PSC doesn't come on, then you could have a faulty power converter.

If the display on the PSC shows "b1" for more than a few seconds, verify the fiber link to the control cabinet. The LED's on the FIM's should be solid green; if not, check the fiber jumpers and FIM's. To check the FIM cards, loop the TX back to it's own RX, the green LED's should stop flashing. If they don't, you've found your bad FIM.

 

[MitelInMyBlood]

If not the FIM or PSC then another possibility is the Peripheral Resource board inside the per node. I've had to replace one once.

Are we maybe overlooking something? IE, can the active (working plane) communicate with cabinet 5 (5-1-16)?

What is the response to a MESS SUB command?