T4X are notorious for the USB ports going bad....
----- Original Message -----
From: "Repair Clinic" <[email protected]>
To: "Andrew Webber" <[email protected]>
Cc: "ThinkPad List" <[email protected]>
Sent: Sunday, March 21, 2010 12:54 PM
Subject: Re: [Thinkpad] T41p: USB problem (& $Mft problem?)
Some require 640 mA, whereas the standard is 500 mA, and some ports still
provide only 350 mA... it is a technical error, but we have seen it on a
number of laptops... not necessarily Thinkpads.
If you are using anything else in another port, the total available will
often be less than 500 mA
RB
- - - - -
I've got all the money I'll ever need,
if I die by four o'clock.
... ... .... ..... ...... ~ Henny Youngman
On Sat, Mar 20, 2010 at 10:46 PM, Andrew Webber
<[email protected]>wrote:
I'm not sure these are related, so I'll start with the known problem.
I have an external bus-powered drive that's always worked well. I
plugged it into the top USB port of the T41p and while the light went
on, I got a message about not recognizing the drive. I moved it to the
bottom USB port and it was recognized.
Is it possible the top port is delivering less than the required
voltage? Would that seem like a reasonable thing for it to be doing (I
don't recall it happening in the past). Right now I have a
self-powered desktop external in the USB port and it's working okay.
Also, with the bus-powered drive, I got an error at one point related
to E:\$MFt (not sure of the exact spelling). I googled and found a lot
of posts on error messages for this. Master File Table I think and it
sounded serious. No number of shutdowns and restarts (of the computer)
seemed to make a difference.
I plugged the drive into another machine and it worked fine, no MFt
error. Put it back into the T41p (bottom port and through a powered
hub this time) and got the MFt error again. It seemed to be cycling
through it: MFt error, E: drops off My Computer, E: is recognized, MFt
error, etc.
Is it possible the MFt message is stuck in a record somewhere and it's
producing this message without actually seeing anything's wrong?
Thanks!
--
Andrew mailto:[email protected]
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