IOM unplugged after electric shock

[Ronny]

Hello,

we have two 7750 SR7 with R8.0 in our lab which didn't find any IOM after eletric shock followed by power loss and reboot.
Both have the correct config running and there is no error in the bootlog.
But both are reporting all IOM's (IOM2-20g) as "provisioned" (5 IOM's in sum, 3 in one chassis and 2 IOM's in the other chassis).
The "equipped type" under "show card state" is complete emtpy.
There is no other IOM in the chassis which is working.
The power LEDs are on.
The state LED are off.
On the MDA's m2-10gb-xfp the LEDs for "Disabled Laser" are on.
The chassis doesn't report any alarm.

Does anyone has an idea what could be the problem here?

Regards Ronny

[cavagnaro]

Maybe...the electric shock?

[Ronny]

jep .. for sure this could be the reason but that doesn't help me

I've took a look on the IOMs and both fuses looks intact.
And the IOMs doesn't boot in the former unused slots.
I have no other 7750 so I cant check the IOMs in other working chassis.

It would help me to know which part of the router can cause this condition.
Without any alarm in the system I don't know which part is damaged.
Otherwise I need to ship the whole chassis for repair ...

Regards Ronny

[rekeds]

there is a console cable on the iom, check what the iom console will tell you.

[Ronny]

I've checked two IOMs and both reporting the same:
(the value "wrong bits" differs between the cards)

Alcatel 7xxx Boot ROM. Copyright 2000-2008 Alcatel-Lucent.
All rights reserved. All use is subject to applicable license agreements.
Build: X-6.1.R2 on Tue Aug 26 11:56:37 PDT 2008 by builder
Version: 0x1D
Starting IOM card

at address : 80000038
expected pattern : B8E6F68C7D235F3F
      wrong bits : 00110900000000C0

at address : 80000030
expected pattern : 77A5B54B3BE21DFE
      wrong bits : 00110900000000C0

at address : 80000028
expected pattern : 36647409FAA0DCBD
      wrong bits : 00110900000000C0

at address : 80000020
expected pattern : F52332C8B95F9B7C
      wrong bits : 00110900000000C0

at address : 80000018
expected pattern : B3E1F187781E5A3B
      wrong bits : 00110900000000C0

at address : 80000010
expected pattern : 72A0B04636DD18FA
      wrong bits : 00110900000000C0

at address : 80000008
expected pattern : 315F6F04F59BD7B9
      wrong bits : 00110900000000C0

at address : 80000000
expected pattern : F01E2DC3B45A9678
      wrong bits : 00110900000000C0

***Local memory (2 Meg) tested BAD!
COLD boot on processor #1
CPU Control FPGA version is 0x25

[Moisesdml]

Hello professionals!

Has anyone found a solution to the problem mentioned above?

I am a technician of this team I found the reason for some but not all ...

[Stoffen]

Hello professionals!

Has anyone found a solution to the problem mentioned above?

I am a technician of this team I found the reason for some but not all ...

Seems to me that the memory have been impacted due to the electric shock.
What does Nokia Support report when providing them with tech-sup files?
My guess is that IOM is rendered useless, and is most likely just an expensive piece of metal now...

But, just guessing here...

[Moisesdml]

Hi !

This failure occurs when some SDRAM memory is not being recognized, I have 4 of these, one I changed the flash memories and it worked, others replace the 46V16M16 memories directly on the PCI and it worked, but two were not successful ... I work with electronics I repair these equipments. However some configurations I am a layman.

[Millou10]

Hi All,

I am facing same issue and need if possible a description how to replace the memory to resolve the problem,

Thanks in advance

Millou