Steve, because all things can not be contained in our written documents we
have a little caveat that we invoke in similar circumstances that states
something like; "consult a Referee", and we name those people specifically.
This allows the Process/Product/Quality Engineers to make a decision as to
whether they are actually experiencing a process indicator that is
new/missed and worth controlling, or not.  It also helps to eliminate
individual interpretations in general.

Sorry, but I think your inspector has performed a good service and deserves
a real answer to your example.  If I'm the customer and you deposited glue
dots in an area that I have identified (maybe not very well) as a keepout
for conformal coating because the board edge is used as a guiderail during
installation and also to provide a ground, I'd be upset.

Not all defects require rework/repair, but the questions should be asked
and the Inspectors observations can be of value.  Maybe your stencils have
an approval process and you can already demonstrate acceptance of the extra
dots?  Who controls and approves the stencil file and how?  If you're the
right guy to make the acceptance decision then make it, but it's more
important to demonstrate a process that has controls.  Perhaps the
Inspector can then perform a future process audit on a new program and
demonstrate the control for you.

I'm not preaching....I just didn't agree with some of the feedback and we
actually have criteria that supports this as a defect.

jb




                      Steve Gregory
                      <[log in to unmask]        To:       [log in to unmask]
                      M>                       cc:
                      Sent by: TechNet         Subject:  [TN] Adhesive where no component is loaded...
                      <[log in to unmask]>


                      05/14/2003 12:28
                      PM
                      Please respond to
                      "TechNet E-Mail
                      Forum."; Please
                      respond to
                      SteveZeva






Hi All!

The fun never ends...

I've been involved in a rather heated (albeit silly, I think...) debate
with an inspector here, about adhesive being deposited where there is no
component loaded.

As you may surmise from my posts over the past few days, I stencil epoxy,
not dispense. For some reason, the issue has come up with one of my
inspectors here, requesting that I get something in writing from our
customer saying that it's okay to have epoxy deposits at locations where
there is no component loaded. I told her that I wasn't going to do it
because I didn't want to look silly asking our customer if it was okay to
have a glue dot at a location that's not loaded.

Her reasoning is that we're putting something on the board that's not being
called out on the bill of material. My response is that the epoxy isn't
called out anyway, but we have to use it to be able to process this board
that has PTH and SMT on the bottom. "But there's no component there, so
there shouldn't be any glue there." was her response. "But it doesn't make
any difference, it's a non-issue" I calmly replied.

We've been debating this for 2-days now, and I'm about at my wits end.
There's nothing in the -610 or the J-STD-001 that says it's defect, or that
it's forbidden to deposit epoxy where a component isn't loaded, and there's
nothing in the documentation from our customer to keep the unused areas
free from epoxy. I've already spent much more time on this issue than I
ever thought I would. Why this issue has popped-up now, I don't have a
clue. Me thinks it's much ado about nothing.

What is your take on this issue?

-Steve Gregory-
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