Embedded Artists iMX6 Quad User manual

How to mount and unmount COM board
Copyright 2021 © Embedded Artists AB
How to mount and unmount a
COM board

How to mount and unmount COM board
Page 2
Copyright 2021 © Embedded Artists AB
Rev A
Embedded Artists AB
Rundelsgatan 14
SE-211 36 Malmö
Sweden
https://www.EmbeddedArtists.com
Copyright 2021 © Embedded Artists AB. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of
Embedded Artists AB.
Disclaimer
Embedded Artists AB makes no representation or warranties with respect to the contents hereof and
specifically disclaim any implied warranties or merchantability or fitness for any particular purpose.
Information in this publication is subject to change without notice and does not represent a
commitment on the part of Embedded Artists AB.
Feedback
We appreciate any feedback you may have for improvements on this document. Send your comments
by using the contact form: www.embeddedartists.com/contact.
Trademarks
All brand and product names mentioned herein are trademarks, services marks, registered
trademarks, or registered service marks of their respective owners and should be treated as such.

How to mount and unmount COM board
Page 3
Copyright 2021 © Embedded Artists AB
Rev A
Table of Contents
1Document Revision History................................. 4
2Introduction........................................................... 5
2.1 Conventions.................................................................................... 5
3Unmount COM board............................................ 6
3.1 Preparations ................................................................................... 6
3.2 Unfasten screws............................................................................. 7
3.3 Remove board ................................................................................ 8
4Mount COM board................................................. 9
4.1 Inspect gold fingers ....................................................................... 9
4.2 Insert COM board ......................................................................... 10
4.3 Fasten the board .......................................................................... 11
4.4 Use a heat sink............................................................................. 12

How to mount and unmount COM board
Page 4
Copyright 2021 © Embedded Artists AB
Rev A
1 Document Revision History
Revision
Date
Description
A
2021-10-06
First release

How to mount and unmount COM board
Page 5
Copyright 2021 © Embedded Artists AB
Rev A
2 Introduction
This document describes how you can safely mount and unmount a COM board from a carrier board.
2.1 Conventions
A number of conventions have been used throughout to help the reader better understand the content
of the document.
Constant width text –is used for file system paths and command, utility and tool names.
$ This field illustrates user input in a terminal running on the
development workstation, i.e., on the workstation where you edit,
configure and build Linux
# This field illustrates user input on the target hardware, i.e.,
input given to the terminal attached to the COM Board
This field is used to illustrate example code or excerpt from a
document.
This field is used to highlight important information

How to mount and unmount COM board
Page 6
Copyright 2021 © Embedded Artists AB
Rev A
3 Unmount COM board
3.1 Preparations
First make sure you work in an ESD safe environment placing the COM board on an anti-static mat.
You should also have a wrist strap attached to your wrist and the anti-static mat.
Figure 1 - Anti-static wrist strap

How to mount and unmount COM board
Page 7
Copyright 2021 © Embedded Artists AB
Rev A
3.2 Unfasten screws
Push down the board in the corners as shown in Figure 2 while unscrewing. Keep pushing down
until all screws have been removed. Begin with the two screws in the corners farthest away from the
MXM3 connector. Then move on to the two inner screws.
Figure 2 - Unfasten screws

How to mount and unmount COM board
Page 8
Copyright 2021 © Embedded Artists AB
Rev A
3.3 Remove board
Release the COM board from the MXM3 connector with small movements and pull evenly in both
corners as illustrated in the pictures below. When removed, you should put the COM board in an ESD
bag or ESD safe environment immediately.
Figure 3 - Release and remove board

How to mount and unmount COM board
Page 9
Copyright 2021 © Embedded Artists AB
Rev A
4 Mount COM board
4.1 Inspect gold fingers
Before you mount the COM board make sure there is no dust on the gold fingers.
Figure 4 - Inspect gold fingers

How to mount and unmount COM board
Page 10
Copyright 2021 © Embedded Artists AB
Rev A
4.2 Insert COM board
Insert the board in about 45 degrees angle. You will notice the angle that is suitable. Push in the board
(with even force in both corners) and make sure it is evenly inserted by looking at the row of gold
fingers. When evenly inserted the same area of the gold finger row can be seen in both ends of the
MXM3 connector.
Figure 5 - COM board at an angle (Note: not fully inserted)

How to mount and unmount COM board
Page 11
Copyright 2021 © Embedded Artists AB
Rev A
4.3 Fasten the board
Begin by pushing down the board. Only push in the corners as shown in Figure 6 and push equally in
both corners. Take the first screw and begin with the inner holes. Keep pressing down on the board
until both inner screws have been fastened. Don’t tighten the screws fully until all screws have been
inserted. Tighten in a cross pattern, but don’t use too much force because it can damage the board.
Figure 6 - Fasten board with screws
Note: Be careful with the screwdriver. If it loose the grip on the screw it can easily damage
components on the COM board.

How to mount and unmount COM board
Page 12
Copyright 2021 © Embedded Artists AB
Rev A
4.4 Use a heat sink
If you would like to mount a heat sink on the processor, design the heat transfer management system
so that the heat sink doesn’t push down on the processor and bend the COM PCB when the heat
increases (and materials expand).
Use spring loaded screws, push pins or captive screws when mounting the heat sink in order to get a
precise and constant pressure on the processor even if some of the material expand when
temperature increase.
Alternatively use a thermal interface material (TIM) that is thicker and designed to absorb material
expansion.