what happens when a logic board is replaced

[tlarkin]

does it just update the MAC address of the built in ethernet in Inventory? Does it create a new entry?

What exactly happens? Anyone know for sure?

---

Thomas Larkin
TIS Department
KCKPS USD500
tlarki at kckps.org
blackberry: 913-449-7589
office: 913-627-0351

[#2]

I just did an MLB replacement on an MBP, and oddly enough the old MAC addr
is showing up in Casper. Strange. I even re-ran Recon to make sure I was
getting up to date information.

Steve Wood
Director of IT
swood at integerdallas.com

The Integer Group | 1999 Bryan St. | Ste. 1700 | Dallas, TX 75201
T 214.758.6813 | F 214.758.6901 | C 940.312.2475

[milesleacy]

If I recall correctly, the JSS database stores more MAC addresses than
display in the interface. Perhaps the new MLB's address(es) are being added
to the empty fields? I assume the repair facility reset the new MLB's
serial number to match your original SN?
This is just a guess based on half-remembered info. Perhaps a call to
support for a definitive answer?

----------
Miles A. Leacy IV

? Certified System Administrator 10.4
? Certified Technical Coordinator 10.5
? Certified Trainer
Certified Casper Administrator
----------
voice: 1-347-277-7321
miles.leacy at themacadmin.com
www.themacadmin.com

[talkingmoose]

When we've had repairs that require replacing the motherboard and the MAC
On 12/16/08 9:02 AM, "Thomas Larkin" <tlarki at kckps.org> wrote:
address has changed then the JSS has treated those machines as having
duplicate computer names. Once we updated the JSS records for the machines
with the new MACs then all is well.

--

bill

William M. Smith, Technical Analyst
MCS IT
Merrill Communications, LLC
(651) 632-1492

[ernstcs]

I just had my MBP board replaced. It still is recognized as the same unit computer in the JSS. However, my serial number now equals "System Serial#".

My wired NIC (en0) is a different Mac address, but my Airport (en1) is the same. If none of the MAC addresses matched up for some reason then the JSS is likely to treat it as a whole new system.

I think I recall that the JSS does store more than the two visible MAC addresses for this particular scenario.

Craig E

[#6]

Apple has a tool you can download called System Board Serializer or
something like that.... You can set your new serial# with it on new/replaced
boards.

[ernstcs]

This is true, but I'm not sure everyone has access to download that tool from Apple I believe. I'm more annoyed the service company didn't just DO IT. =) They should, if you have this issue and wanted to go back and make them.

Craig E

[#8]

I did the replacement myself and made sure I serialized the board properly,
so that isn’t an issue as it does match what was it was previously. I’ll
have to check the DB to see if there are more MAC addresses hiding out
somewhere.

Steve Wood
Director of IT
swood at integerdallas.com

The Integer Group | 1999 Bryan St. | Ste. 1700 | Dallas, TX 75201
T 214.758.6813 | F 214.758.6901 | C 940.312.2475

[milesleacy]

Unless things have changed since I was a service tech, distributing and/or
using the board serializer outside of an Apple Authorized Service Center
violates several Apple agreements (that's not a judgement, just
information) The service technician should reset the SN when a logic board
is replaced.
I imagine that in cases, where the MLB was replaced, but the airport card
was not, the JSS has a known MAC to identify the machine with. If the MLB
and airport are replaced, my guess is that the JSS would treat it as a new
machine. I believe bluetooth also has a MAC address, but in most Macs
today, BT is part of the same hardware module as airport, so if airport is
replaced, so is BT.

Again, this is all guesswork until someone asks JAMF.

----------
Miles A. Leacy IV

? Certified System Administrator 10.4
? Certified Technical Coordinator 10.5
? Certified Trainer
Certified Casper Administrator
----------
voice: 1-347-277-7321
miles.leacy at themacadmin.com
www.themacadmin.com

[tlarkin]

You can have self maintainer status and get full access to GSX. I keep
my OS and hardware certs up to date every year so I can do in house
repairs, get warranty reimbursements and of course have full access to
GSX and all of it's tools, like the serial number tool, ASD diagnostics,
etc etc.

The reason I ask is that we have some machines that have not checked in
our network for a while and we are wondering where they are at. We do
out source all of our hardware repairs of anything major to a third
party. There are 5 of us total, and we manage 6,542 Macs now. No way
any of us have the time to do component level repair on Mac laptops
unless it is like popping a key back on or swapping out RAM.

I was wondering if a machine came back from repair with new logic board
if it treated it like a new machine. I do see machines with the same
name in our database as well, and it is represented by the computername
with a (2) at the end of it.