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Question to X250 Motherboard

X230 and later series specific matters only
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Tasurinchi
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Question to X250 Motherboard

#1 Post by Tasurinchi » Fri Jun 08, 2018 4:05 pm

Hey gals and guys...

I got a defective X250 which shows no image on the display, when removing the bottom cover the first thing I noticed was this chip, its cover is glued to the black tape:

Image

Does anybody knows what's the function of the chip? Is it bad it it stay "open"? Should I be worried or should I just tape it?

Thanks a lot in advance for your help and have a good start of the weekend!

T
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
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RealBlackStuff
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Re: Question to X250 Motherboard

#2 Post by RealBlackStuff » Fri Jun 08, 2018 4:36 pm

That's a pulse transformer, probably the NA69.
It's a bunch of chokes to regulate the data lines of the LAN port nearby.
It's recommended to keep it closed.
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Tasurinchi
Senior ThinkPadder
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Posts: 2077
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: Question to X250 Motherboard

#3 Post by Tasurinchi » Fri Jun 08, 2018 5:04 pm

Thanks RBS for the prompt answer!

But does it look alright? Like, not busted? I was thinking of kapton tape it...
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

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