Mod30EP Mystery error

[kevin906]

Anyone have any experience with this error? This is a Mod30EP, single cabinet system. The CPU is a DSC80. The error looks to be something about the ring generator. The analog phones in the system are not having any problem ringing in. Not sure if this is some kind of error that is logging due to loss of input to the processor or what is going on. This cabinet has no Ring generator card installed due to the low quantity of analog cards. The ring gen is coming from the main power supply. There are no obvious test points and the error description in the manuals doesn't provide a lot of direction. The error shows up weekly. It will clear itself for about 30 seconds and comes right in again. I am trying to figure out if I need to change the CPU, the power supply, or just ignore it.

----

***This is the alarm clearing message..

F5334 M4 N0661 IN SERV BPA LTUC RGEN SYN ON 08-06-19 14:11:37
ALARM CLASS:CENTRAL:002

P101: :CC :037: 0 : 0 Q2161-X DSC80 BST:01 FW: D961-D
FORMAT:43
RGEN SYNCHRONIZING
CLOCK AVAILABLE


---------

Then about 30 seconds later it comes back in again.

F5327 M4 N0663 OUT SERV BPA LTUC RGEN SYN OFF 08-06-19 14:12:11
ALARM CLASS:CENTRAL:002

P101: :CC :037: 0 : 0 Q2161-X DSC80 BST:01 FW: D961-D
FORMAT:43
RGEN SYNCHRONIZING
CLOCK MISSING
POSSIBLE ERROR LOCATION:
RGEN BOARD OR
SYNC CLOCK CABLE OR
LTUC SYNC INPUT DEFECT



A9001 M4 N0664 NO ACT BPA NMCALARM MAJOR ALARM ON 08-06-19 14:22:20
ALARM CLASS:CENTRAL:002

ALARM NAME:LTU FAILURE
FORMAT:2C

 

[donb01]

Well, a couple things bouncing around in my mind here.

First, I'm kinds of surprised you have a 30EP with a DSC80 processor. What software version are you running? I would have thought you would have at least a DMP4L or DMP5L processor - but that's besides the point....

I have a 2 cabinet 30EP and am having all kinds of problems with Ring Generation so I have a particular interest here. In my case I have an RG card in shelf 2 and (had) a wired-for slot in shelf 1. I dropped a card in that slot and started putting phones on it but they will not ring. You can answer them just fine if you pick them up when they are supposed to be ringing, but.... I was told it was a bad ($1000) power supply, so instead of giving them the cash I swapped the power supplies between the 2 cabinets and it made no diff. Then I was told to check the vertical jumper string on the back of the cabinet (about 6 inches from the right side looking from the back) and make sure the jumpers were set right. That made no difference either. The tech also thought the RG should send voltage from CAB2 to CAB1 across a cable but that didn't pan out either.

In your case I would do a DIS-BCSU type=TBL and look to see if the system is configured for HORG (high output ring generator) in slot 19. It's normally that or SIUX. If it says it's supposed to be a HORG the system may be freaking out because the card isn't there - even if you don't need one, in which case you can probably ignore the error - for now anyway. If the system is configured with the RG board they must have it at least wired for enough analog ports that they thought it would be necessary to have one (whether or not you have them in use) - so at some time in the future if you add a bunch of ports the card may be necessary.

Another possibility is the LTUC card might be flaky - there is a message that says the shelf is going into error, so if that card has issues it could be along those lines.


Just out of curiosity, if you slide the shelf out and look at the single row jumper pin header near the right side of the cabinet on the backplane board. How is that jumpered? pins 1+2 and 4+5 shorted, or is it 1+2 and 3+4? In my case the text of the manual says 1+2 and 4+5 but the illustration shows 1+2 and 3+4, and I've never tried it that way.

 

[kevin906]

This is a 1-cab 30EP running on 9006.5 software. It is a DSC80 processor. The 30E cabinets are advertised as not needing HORG card installed with less than 32 analog ports in a cabinet. The power supplies are providing the ring voltage in those cases. If you put in the HORG card you are supposed to remove the straps lest you burn up the power supplies. As far as I know the ring generator is only delivered to it's own cabinet. Unlike a Mod80 where you strap the shelves together to distribute the ringing voltage. The strapping on the cabinet is as the book describes 1+2,4+5. I see what you mean about the picture, it looks wrong. I am attaching a text file with some notes I had from Siemens about this architecture. Since the DSC80 also acts as the LTUC in this scenario maybe that is where my problem lies.

Thanks

 

[kevin906]

Can't seem to figure out how to attach a file. Here is the text::

Analog Phones Not Ringing in Flex or Cabinet 2 of 30EP
IMPORTANT - If backplane strapped and Ring Generator Installed, this will cause
Failure to Power Supply Ring Voltage
If your Flex Shelf (HG3800) system, or cabinet 2 of Model 30EP has less then 32
Analog Phones, then a Ring Generator Card is NOT REQUIRED to be installed in the
shelf. However if your system has more than 32 Analog Phones, then a Ring Generator
card IS REQUIRED.

Strapping:
Flex Shelf or Model 30EP Cabinet 2: Jumpers should be installed on the X6-1/X6-2
and X6-4/X6-5 of these cabinets, when NO RING GENERATOR installed.
If you have a Ring Generator installed these jumpers MUST BE REMOVED.
On Cabinet 1 of Model 30EP, if Analogs Phones installed, and NO RING GENERATOR
installed, then strap X31-1/X31-2 and X31-4/X31-5.With this strapping, the power
supply will provide Ring Voltage for Analog Devices.


SLMA2/SLMA2P Card Failures on 9006.5 30EP systems

It has been discovered that 30EP systems not employing a Ring Generator Module (HORG) can experience SLMA2 card failures
characterized as total board failure under traffic.
The problem occurs when the shelf is strapped to use the DC/DC converter (shelf power supply) for ringing supply.
If a ring generator card is installed, the problem does not occur.

This problem is also possible on RCMXPs because they use the same type power supply.

If this condition is discovered the power supply should be replaced.
Here follows the part number and model number for a new (retrofitted) power supply:

Model# 97753A
Part # 31E6319

The assembly number changes from: S30122-K5590-X-4 to S30122-K5590-X-5

The problem occurs due to a defect in the ONAN power supply.
Noise generate by the supply when strapped for 80Vac at 20Hz causes problems with the sync pulse to the
SLMA2 cards when the external ringing cadence is applied to a circuit.
A new power supply (Celestica) is currently in test but won't be available for several months


We are currently investigating a MAJOR problem with Upgrades that are adding unneeded HORG to each cabinet of a 30EX/EP.
If you are NOT adding extra SLMA cards to the system then do NOT add the HORG cards.
Adding these cards under power and without REMOVING straps on Steckerfield will cause

 

[donb01]

Looks like you have access to the knowledge base... I've always wished for a way, but it's not gonna happen! I do have all the same regular docs the techs have though.

I have a 9006.5 (v2) that's a hermaphrodite - it has one 30EX cabinet and one 30EP cabinet because it was upgraded. That's running a DM4L I believe, and I'm not having any problems with it other than v2 of LC-Win sucks major kapooie - it's like the Windows ME of LC-Win and was very short lived.

I also have a single cabinet 30EP on 9006.5 (v3) and am not having any problems with that one.

It's just the 2 cabinet 30EP on 9006.6 (aka 300H 1.0) that is having problems. The analog cards work fine in cabinet 2 with the RG but will not ring in cabinet 1 without. The slot in Cab 1 was wired-for so there was no card in it until recently and I was not aware of the problem - well beyond the warranty period, of course. The shelf was strapped to have an RG card in it but there is not one - there is an SIUX in there instead. I corrected the jumpers per the text in the manual (and tech) and rolled power supplies between the 2 cabinets - nothing worked. When they told me it was going to cost me $1000 to replace the power supply I had no idea if was bad or not I did what any sensible person would do and changed the cardmap. I took the analog off shelf 1 and swapped it with an RP card on shelf 2 - immediate problem solved, and I don't expect them to add another 20 faxes or modems anytime soon. I would normally worry about traffic issues, but there aren't that many devices or that much traffic on there that I expect to worry about it.

None of that explains any better why you're having a problem. My guess would be that if there is no RG card and no LTUC card then the clock signal in question must be DSC80 related.... Let me know if you get to that point and it's going to cost you a billion dollars to swap out the card - I'm not sure what was in the hermaphrodite before I upgraded it, but I might have one laying around - you might have to replace the battery, but that's not the worst thing...