Don't know of any at this time, but have had the same issue from time to
time and all we do is scrape away a little pf the surface. We have found an
excess build up of the carbon which causes an intermittent contact with the
keys.

Randy Bock Sr.
Quality Manager
Bryce Office Systems LLC
[log in to unmask]

----- Original Message -----
From: YH Koh <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, April 22, 2002 7:31 AM
Subject: [TN] Contact Resistant on the Board


> Dear Technet,
>
> Would like to determine if there is a specification to check for the
> surface contact resistant of the board when a metal dome (form the keypad)
> is pressed on top on the boards. The resistance tolerance should be well
> around +/-0.001 ohm. The reason is to address any intermittent contact
> (like increse in resistnace) if there is an oxide layer or contamination
on
> the boards.
>
> Appreicate any inputs.
>
> Regards,
> YH Koh
>
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