Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

T420 Query/Question

T400/410/420 and T500/510/520 series specific matters only
Post Reply
Message
Author
GrifterGuru
Freshman Member
Posts: 124
Joined: Wed Sep 05, 2018 10:41 pm
Location: London, UK

T420 Query/Question

#1 Post by GrifterGuru » Wed Sep 05, 2018 10:54 pm

Well, this one came about following the removal of the keybaord to "De-crumb" it (shake out, blow out, tap out any and all debris from under the keys) ready to install the memory and new keyboard ( old one is working just fine, but I hate shiny keyboard keys!!)...

Underneath the keyboard, lurking out of sight is a connector that I had no idea existed vand now it is buging me as to the purpose of it. Obviously it is there for a reason, I would just like to know what that reason is.

Here it is as viewed after lfting the keyboard.. The Right hand side of the laptop is to the top right of the image (Spot the LCD hinge?)

https://farm2.staticflickr.com/1895/435 ... 191d_c.jpg

Here it is a little closer... See the Grey block standing up above the board? that is the connector I am talking about.l It is obviously intended for something, but what I do not know and it will drive me to distraction until I do know

https://farm2.staticflickr.com/1857/435 ... b741_c.jpg



Thank you in advance for any help, assistance or advise received.



FORUM warning:
picture(s) WAY too big, tags removed. Please read the Forum Rules, especially Section 5: viewtopic.php?f=16&t=14339
X31 2672-58G, M73 10AXS, M73 10AXS i7, L412 4403-72G i5,T420 4236-9N8 i7-2630QM, T430 2349-TDG, X201 3680-C85, X220 42902
Install Mojave on X220 & T420

BillMorrow
*Senior* Admin
*Senior* Admin
Posts: 7281
Joined: Tue Apr 13, 2004 9:40 pm
Location: San Francisco -> Florida -> Georgia
Contact:

Re: T420 Query/Question

#2 Post by BillMorrow » Thu Sep 06, 2018 12:20 am

hello grifter..
welcome to the forum..

oyu might check the hardware maintenance manual..
look above in the banner and click on the "HMM".. :)
Bill Morrow, kept by parrots :parrot: & cockatoos
Sysop - forum.thinkpads.com

*
She was not what you would call refined,
She was not what you would call unrefined,
She was the type of person who kept a parrot.
~~~Mark Twain~~~

axur-delmeria
Senior ThinkPadder
Senior ThinkPadder
Posts: 2000
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: T420 Query/Question

#3 Post by axur-delmeria » Thu Sep 06, 2018 1:13 am

That connector and two screw holes (on the upper left and lower right corners) -- definitely looks like it's for a dial-up modem card. Removed at least 8 of those in the X60/61 units I've opened up. :lol:
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

GrifterGuru
Freshman Member
Posts: 124
Joined: Wed Sep 05, 2018 10:41 pm
Location: London, UK

Re: T420 Query/Question

#4 Post by GrifterGuru » Thu Sep 06, 2018 2:26 am

Thanks for the replies :)

@axur-delmeria that may explain the Sim card slot in the battery bay if that is the case ;)

@BillMorrow Thank-you. Also, I will be sure to check the HMM, I do love a good read ;)

**** EDIT ****

Editied to add thsat having now read the relevant section of the HMM, it appears the connector is for an MDC, Either Modem or blutooth if I read it correctly.

+1 to @BillMorrow for the tipp-off about the HMM. Was not aware of what that stood for and thought the HMM link was "forbidden fruit" as-it-were.

**** EDIT ****
X31 2672-58G, M73 10AXS, M73 10AXS i7, L412 4403-72G i5,T420 4236-9N8 i7-2630QM, T430 2349-TDG, X201 3680-C85, X220 42902
Install Mojave on X220 & T420

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T400/410/420 and T500/510/520 Series”

Who is online

Users browsing this forum: No registered users and 13 guests