Dell Inspiron Chromebook 7486 User manual

Inspiron Chromebook 7486
Service Manual
Computer Model: Inspiron Chromebook 7486
Regulatory Model: P94G
Regulatory Type: P94G001

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2018 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks
may be trademarks of their respective owners.
2018 - 09
Rev. A00

Contents
1 Before working inside your computer............................................................................................................. 7
Before you begin ................................................................................................................................................................7
2 After working inside your computer............................................................................................................... 8
3 Safety instructions........................................................................................................................................ 9
Electrostatic discharge—ESD protection.......................................................................................................................9
ESD eld service kit ........................................................................................................................................................ 10
Components of an ESD eld service kit.................................................................................................................. 10
ESD protection summary ..........................................................................................................................................10
Transporting sensitive components................................................................................................................................ 11
Lifting equipment ........................................................................................................................................................11
4 Recommended tools.....................................................................................................................................12
5 Screw list..................................................................................................................................................... 13
6 Removing the base cover............................................................................................................................. 14
Procedure.......................................................................................................................................................................... 14
7 Replacing the base cover..............................................................................................................................17
Procedure...........................................................................................................................................................................17
8 Removing the battery.................................................................................................................................. 20
Prerequisites..................................................................................................................................................................... 20
Procedure..........................................................................................................................................................................20
9 Replacing the battery.................................................................................................................................. 22
Post-requisites..................................................................................................................................................................22
Procedure..........................................................................................................................................................................22
10 Removing the fan....................................................................................................................................... 24
Prerequisites..................................................................................................................................................................... 24
Procedure..........................................................................................................................................................................24
11 Replacing the fan........................................................................................................................................ 25
Procedure..........................................................................................................................................................................25
Post-requisites..................................................................................................................................................................25
12 Removing the heat sink.............................................................................................................................. 26
Prerequisites..................................................................................................................................................................... 26
Procedure..........................................................................................................................................................................26
13 Replacing the heat sink...............................................................................................................................27
Contents 3

Procedure..........................................................................................................................................................................27
Post-requisites..................................................................................................................................................................27
14 Removing the I/O board............................................................................................................................. 28
Prerequisites..................................................................................................................................................................... 28
Procedure..........................................................................................................................................................................28
15 Replacing the I/O board............................................................................................................................. 30
Procedure..........................................................................................................................................................................30
Post-requisites.................................................................................................................................................................. 31
16 Removing the speakers.............................................................................................................................. 32
Prerequisites..................................................................................................................................................................... 32
Procedure..........................................................................................................................................................................32
17 Replacing the speakers...............................................................................................................................33
Procedure..........................................................................................................................................................................33
Post-requisites..................................................................................................................................................................33
18 Removing the wireless card........................................................................................................................34
Prerequisites..................................................................................................................................................................... 34
Procedure..........................................................................................................................................................................34
19 Replacing the wireless card........................................................................................................................ 36
Procedure..........................................................................................................................................................................36
Post-requisites..................................................................................................................................................................36
20 Removing the display back cover............................................................................................................... 37
Prerequisites..................................................................................................................................................................... 37
Procedure..........................................................................................................................................................................37
21 Replacing the display back cover................................................................................................................38
Procedure..........................................................................................................................................................................38
Post-requisites..................................................................................................................................................................38
22 Removing the display assembly..................................................................................................................39
Prerequisites..................................................................................................................................................................... 39
Procedure..........................................................................................................................................................................39
23 Replacing the display assembly..................................................................................................................40
Procedure..........................................................................................................................................................................40
Post-requisites..................................................................................................................................................................40
24 Removing the display hinges.......................................................................................................................41
Prerequisites......................................................................................................................................................................41
Procedure.......................................................................................................................................................................... 41
25 Replacing the display hinges...................................................................................................................... 42
4Contents

Procedure .........................................................................................................................................................................42
Post-requisites..................................................................................................................................................................42
26 Removing the camera................................................................................................................................ 43
Prerequisites..................................................................................................................................................................... 43
Procedure..........................................................................................................................................................................43
27 Replacing the camera.................................................................................................................................44
Procedure .........................................................................................................................................................................44
Post-requisites..................................................................................................................................................................44
28 Removing the display cable........................................................................................................................45
Prerequisites..................................................................................................................................................................... 45
Procedure..........................................................................................................................................................................45
29 Replacing the display cable........................................................................................................................46
Procedure..........................................................................................................................................................................46
Post-requisites..................................................................................................................................................................46
30 Removing the display panel........................................................................................................................47
Prerequisites..................................................................................................................................................................... 47
Procedure..........................................................................................................................................................................47
31 Replacing the display panel........................................................................................................................ 48
Procedure..........................................................................................................................................................................48
Post-requisites..................................................................................................................................................................48
32 Removing the system board.......................................................................................................................49
Prerequisites..................................................................................................................................................................... 49
Procedure..........................................................................................................................................................................49
33 Replacing the system board........................................................................................................................51
Procedure.......................................................................................................................................................................... 51
Post-requisites..................................................................................................................................................................52
34 Removing the palm-rest and keyboard assembly....................................................................................... 53
Prerequisites..................................................................................................................................................................... 53
Procedure..........................................................................................................................................................................53
35 Replacing the palm-rest and keyboard assembly........................................................................................54
Procedure..........................................................................................................................................................................54
Post-requisites..................................................................................................................................................................54
36 Technology and components..................................................................................................................... 55
Special keys...................................................................................................................................................................... 55
Keyboard keys function.............................................................................................................................................55
Touchpad gestures...........................................................................................................................................................57
Bluetooth...........................................................................................................................................................................57
Contents 5