Dell Inspiron 3782 User manual

Inspiron 3782
Service Manual
Regulatory Model: P35E
Regulatory Type: P35E006

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 - 2019 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.
2019 - 06
Rev. A00

1 Before working inside your computer............................................................................................. 9
Before you begin ...................................................................................................................................................................9
2 After working inside your computer..............................................................................................10
3 Safety instructions...................................................................................................................... 11
Electrostatic discharge—ESD protection......................................................................................................................... 11
ESD field service kit ............................................................................................................................................................ 12
Transporting sensitive components...................................................................................................................................13
4 Recommended tools....................................................................................................................14
5 Screw list...................................................................................................................................15
6 Removing the optical drive...........................................................................................................17
Procedure..............................................................................................................................................................................17
7 Replacing the optical drive...........................................................................................................19
Procedure .............................................................................................................................................................................19
8 Removing the base cover.............................................................................................................21
Prerequisites......................................................................................................................................................................... 21
Procedure..............................................................................................................................................................................21
9 Replacing the base cover............................................................................................................ 23
Procedure ............................................................................................................................................................................23
Post-requisites.....................................................................................................................................................................24
10 Removing the battery................................................................................................................25
Lithium-ion battery precautions........................................................................................................................................ 25
Prerequisites........................................................................................................................................................................ 25
Procedure.............................................................................................................................................................................25
11 Replacing the battery.................................................................................................................27
Lithium-ion battery precautions.........................................................................................................................................27
Procedure ............................................................................................................................................................................ 27
Post-requisites.....................................................................................................................................................................28
12 Removing the memory modules..................................................................................................29
Prerequisites........................................................................................................................................................................ 29
Procedure.............................................................................................................................................................................29
13 Replacing the memory modules.................................................................................................. 30
Contents
Contents 3

Procedure ............................................................................................................................................................................30
Post-requisites.....................................................................................................................................................................30
14 Removing the wireless card........................................................................................................ 31
Prerequisites......................................................................................................................................................................... 31
Procedure..............................................................................................................................................................................31
15 Replacing the wireless card........................................................................................................33
Procedure............................................................................................................................................................................. 33
Post-requisites.....................................................................................................................................................................33
16 Removing the optical-drive connector board............................................................................... 34
Prerequisites.........................................................................................................................................................................34
Procedure............................................................................................................................................................................. 34
17 Replacing the optical-drive connector board................................................................................35
Procedure ............................................................................................................................................................................35
Post-requisites.....................................................................................................................................................................35
18 Removing the coin-cell battery...................................................................................................36
Prerequisites........................................................................................................................................................................ 36
Procedure.............................................................................................................................................................................36
19 Replacing the coin-cell battery................................................................................................... 37
Procedure............................................................................................................................................................................. 37
Post-requisites..................................................................................................................................................................... 37
20 Removing the solid-state drive.................................................................................................. 38
Prerequisites.........................................................................................................................................................................38
Procedure............................................................................................................................................................................. 38
21 Replacing the solid-state drive................................................................................................... 40
Procedure ............................................................................................................................................................................40
Post-requisites.....................................................................................................................................................................40
22 Removing the hard drive............................................................................................................ 41
Prerequisites......................................................................................................................................................................... 41
Procedure..............................................................................................................................................................................41
23 Replacing the hard drive............................................................................................................43
Procedure ............................................................................................................................................................................43
Post-requisites.....................................................................................................................................................................44
24 Removing the touchpad............................................................................................................ 45
Prerequisites........................................................................................................................................................................ 45
Procedure.............................................................................................................................................................................45
25 Replacing the touchpad.............................................................................................................47
4Contents

Procedure ............................................................................................................................................................................ 47
Post-requisites.....................................................................................................................................................................48
26 Removing the speakers............................................................................................................. 49
Prerequisites........................................................................................................................................................................ 49
Procedure.............................................................................................................................................................................49
27 Replacing the speakers............................................................................................................. 50
Procedure ............................................................................................................................................................................50
Post-requisites.....................................................................................................................................................................50
28 Removing the heat sink............................................................................................................. 51
Prerequisites......................................................................................................................................................................... 51
Procedure..............................................................................................................................................................................51
29 Replacing the heat sink............................................................................................................. 52
Procedure ............................................................................................................................................................................52
Post-requisites.....................................................................................................................................................................52
30 Removing the power-adapter port............................................................................................. 53
Removing the display assembly.........................................................................................................................................53
Prerequisites...................................................................................................................................................................53
Procedure....................................................................................................................................................................... 53
Procedure.............................................................................................................................................................................55
31 Replacing the power-adapter port.............................................................................................. 57
Procedure ............................................................................................................................................................................ 57
Replacing the display assembly..........................................................................................................................................57
Procedure ...................................................................................................................................................................... 57
Post-requisites...............................................................................................................................................................59
32 Removing the display assembly..................................................................................................60
Prerequisites........................................................................................................................................................................ 60
Procedure.............................................................................................................................................................................60
33 Replacing the display assembly..................................................................................................63
Procedure ............................................................................................................................................................................63
Post-requisites.....................................................................................................................................................................64
34 Removing the I/O board............................................................................................................ 65
Prerequisites........................................................................................................................................................................ 65
Procedure.............................................................................................................................................................................65
35 Replacing the I/O board............................................................................................................ 66
Procedure ............................................................................................................................................................................66
Post-requisites.....................................................................................................................................................................66
36 Removing the power-button board.............................................................................................67
Contents 5

Prerequisites.........................................................................................................................................................................67
Procedure............................................................................................................................................................................. 67
37 Replacing the power-button board............................................................................................. 69
Procedure ............................................................................................................................................................................69
Post-requisites.....................................................................................................................................................................70
38 Removing the system board....................................................................................................... 71
Prerequisites......................................................................................................................................................................... 71
39 Replacing the system board.......................................................................................................72
Procedure............................................................................................................................................................................. 72
Post-requisites..................................................................................................................................................................... 73
Entering the Service Tag in the BIOS setup program.................................................................................................... 74
40 Removing the power button with fingerprint reader.................................................................... 75
Prerequisites.........................................................................................................................................................................75
Procedure............................................................................................................................................................................. 75
41 Replacing the power button with fingerprint reader..................................................................... 76
Procedure ............................................................................................................................................................................ 76
Post-requisites..................................................................................................................................................................... 76
42 Removing the palm-rest and keyboard assembly..........................................................................77
Prerequisites.........................................................................................................................................................................77
Procedure............................................................................................................................................................................. 77
43 Replacing the palm-rest and keyboard assembly..........................................................................78
Procedure ............................................................................................................................................................................ 78
Post-requisites..................................................................................................................................................................... 78
44 Removing the display bezel........................................................................................................79
Prerequisites.........................................................................................................................................................................79
Procedure............................................................................................................................................................................. 79
45 Replacing the display bezel....................................................................................................... 80
Procedure ............................................................................................................................................................................80
Post-requisites.....................................................................................................................................................................80
46 Removing the camera................................................................................................................ 81
Prerequisites......................................................................................................................................................................... 81
Procedure..............................................................................................................................................................................81
47 Replacing the camera................................................................................................................82
Procedure ............................................................................................................................................................................82
Post-requisites.....................................................................................................................................................................82
48 Removing the display panel....................................................................................................... 83
6Contents

Prerequisites.........................................................................................................................................................................83
Procedure............................................................................................................................................................................. 83
49 Replacing the display panel....................................................................................................... 85
Procedure ............................................................................................................................................................................85
Post-requisites.....................................................................................................................................................................86
50 Removing the display hinges..................................................................................................... 87
Prerequisites.........................................................................................................................................................................87
Procedure............................................................................................................................................................................. 87
51 Replacing the display hinges...................................................................................................... 88
Procedure ............................................................................................................................................................................88
Post-requisites.....................................................................................................................................................................88
52 Removing the display cable....................................................................................................... 89
Prerequisites........................................................................................................................................................................ 89
Procedure.............................................................................................................................................................................89
53 Replacing the display cable....................................................................................................... 90
Procedure ............................................................................................................................................................................90
Post-requisites.....................................................................................................................................................................90
54 Removing the display back-cover and antenna assembly.............................................................. 91
Prerequisites......................................................................................................................................................................... 91
Procedure..............................................................................................................................................................................91
55 Replacing the display back-cover and antenna assembly.............................................................. 92
Procedure ............................................................................................................................................................................92
Post-requisites.....................................................................................................................................................................92
56 Device drivers.......................................................................................................................... 93
Intel Chipset Software Installation Utility......................................................................................................................... 93
Video drivers........................................................................................................................................................................ 93
Intel Serial IO driver............................................................................................................................................................. 93
Intel Trusted Execution Engine Interface......................................................................................................................... 93
Intel Virtual Button driver................................................................................................................................................... 93
Wireless and Bluetooth drivers.......................................................................................................................................... 93
57 System setup........................................................................................................................... 94
System setup....................................................................................................................................................................... 94
Entering BIOS setup program............................................................................................................................................94
Navigation keys....................................................................................................................................................................94
Boot Sequence.................................................................................................................................................................... 94
Clearing CMOS settings.....................................................................................................................................................95
Clearing BIOS (System Setup) and System passwords.................................................................................................95
58 Troubleshooting....................................................................................................................... 96
Contents 7

Flashing the BIOS................................................................................................................................................................96
Flashing BIOS (USB key)....................................................................................................................................................96
Enhanced Pre-Boot System Assessment (ePSA) diagnostics......................................................................................96
Running the ePSA diagnostics..................................................................................................................................... 97
System diagnostic lights..................................................................................................................................................... 97
WiFi power cycle................................................................................................................................................................. 98
Flea power release...............................................................................................................................................................98
59 Getting help and contacting Dell................................................................................................99
8 Contents

Before working inside your computer
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Before you begin
1. Save and close all open files and exit all open applications.
2. Shut down your computer. Click Start > Power > Shut down.
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down
instructions.
3. Disconnect your computer and all attached devices from their electrical outlets.
4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
5. Remove any media card and optical disc from your computer, if applicable.
1
Before working inside your computer 9

After working inside your computer
CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.
1. Replace all screws and ensure that no stray screws remain inside your computer.
2. Connect any external devices, peripherals, or cables you removed before working on your computer.
3. Replace any media cards, discs, or any other parts that you removed before working on your computer.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.
2
10 After working inside your computer