Panasonic Toughbook CF-52 IC Identification

[adiserwis]

Hello everyone,

Could someone please identify the burned element on CF-52MK3 board?
Not much information on those boards and don't have spare one at the moment
Thank you in advance

[SMDFlea]

Re: Panasonic Toughbook CF-52 IC Identification

Post the silkscreened motherboard part number,there might be a schematic available, and post the part number on the chip.

.

[adiserwis]

Re: Panasonic Toughbook CF-52 IC Identification

Thanks for reply,

Motherboard is CF-52MK3 DFU1912ZA (1)
Chip is almost completely burned, only readable part is "ADM2"

[mon2]

Re: Panasonic Toughbook CF-52 IC Identification

ADM = Analog Devices.

Wonder if this is a charge-pump style RS232 transceiver @ 28 pins?

Did this laptop feature a RS232 serial port ?

[adiserwis]

Re: Panasonic Toughbook CF-52 IC Identification

Hi, yes, it has RS232, and yes, I believe you're right about it.
My problem is, there is few and they all unfortunately
start with ADM2

[mon2]

Re: Panasonic Toughbook CF-52 IC Identification

Ok. Check ADM213 - see attached datasheet and confirm the caps to the RIGHT side of this IC. Trace their pads with a meter to confirm they match the attached datasheet. Common part to source.

Fairly sure that your blow IC is:

ADM211EARZ

or

ADM213EARZ

Both are of the same pinout but behave differently during shutdown of the part. During a shutdown, the 213 device remains active to wakeup the host PC with a mouse movement or external serial device.

I would suggest for you to source 1 of each of the following for testing:

https://www.digikey.ca/en/products/d...11EARZ/1007300

https://www.digikey.ca/en/products/d...213EARZ/820157

Was this the only problem with this logic board? If yes, use a hot air tool to remove and replace this part. Or have your local cell phone repair shop to do the same.

[adiserwis]

Re: Panasonic Toughbook CF-52 IC Identification

It looks like after all it is ADM213.
Placement of caps checks out according to datasheet.
Thank you very much for your help