Dell inspiron 27 7000 User manual

Inspiron 27 7000
Service Manual
Computer Model: Inspiron 27-7775
Regulatory Model: W16C
Regulatory Type: W16C001

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.
Copyright ©2017 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.
2017 - 05
Rev. A00

Contents
Before working inside your computer............................ 11
Before you begin ......................................................................................11
Safety instructions................................................................................... 12
Recommended tools................................................................................ 13
Screw list................................................................................................. 13
After working inside your computer..............................16
Technical overview........................................................17
Inside view of your computer................................................................... 18
System-board components .....................................................................19
Removing the back cover............................................. 21
Procedure................................................................................................ 21
Replacing the back cover............................................. 23
Procedure................................................................................................23
Removing the stand..................................................... 24
Prerequisites............................................................................................24
Procedure................................................................................................24
Replacing the stand..................................................... 26
Procedure............................................................................................... 26
Post-requisites........................................................................................ 26
3

Removing the hard drive.............................................. 27
Prerequisites............................................................................................27
Procedure................................................................................................27
Replacing the hard drive.............................................. 30
Procedure............................................................................................... 30
Post-requisites........................................................................................ 30
Removing the inner frame............................................ 31
Prerequisites............................................................................................ 31
Procedure................................................................................................32
Replacing the inner frame............................................ 35
Procedure............................................................................................... 35
Post-requisites........................................................................................ 35
Removing the camera.................................................. 36
Prerequisites........................................................................................... 36
Procedure............................................................................................... 36
Replacing the camera.................................................. 38
Procedure............................................................................................... 38
Post-requisites........................................................................................ 38
Removing the microphones..........................................39
Prerequisites........................................................................................... 39
Procedure............................................................................................... 39
Replacing the microphones...........................................41
Procedure................................................................................................ 41
Post-requisites......................................................................................... 41
4

Removing the power-button board...............................42
Prerequisites............................................................................................42
Procedure................................................................................................42
Replacing the power-button board...............................44
Procedure................................................................................................44
Post-requisites........................................................................................ 44
Removing the front bezel ............................................45
Prerequisites........................................................................................... 45
Procedure............................................................................................... 46
Replacing the front bezel............................................. 48
Procedure............................................................................................... 48
Post-requisites........................................................................................ 48
Removing the media-card reader................................. 49
Prerequisites........................................................................................... 49
Procedure............................................................................................... 49
Replacing the media-card reader................................. 53
Procedure............................................................................................... 53
Post-requisites........................................................................................ 53
Removing the side I/O-board.......................................55
Prerequisites........................................................................................... 55
Procedure............................................................................................... 55
Replacing the side I/O-board....................................... 57
Procedure................................................................................................57
Post-requisites........................................................................................ 57
5

Removing the system-board shield.............................. 58
Prerequisites........................................................................................... 58
Procedure............................................................................................... 58
Replacing the system-board shield.............................. 60
Procedure............................................................................................... 60
Post-requisites........................................................................................ 60
Removing the fan......................................................... 61
Prerequisites............................................................................................ 61
Procedure................................................................................................ 61
Replacing the fan.........................................................63
Procedure............................................................................................... 63
Post-requisites........................................................................................ 63
Removing the speakers................................................64
Prerequisites........................................................................................... 64
Procedure .............................................................................................. 64
Replacing the speakers................................................ 66
Procedure .............................................................................................. 66
Post-requisites........................................................................................ 66
Removing the subwoofer............................................. 67
Prerequisites............................................................................................67
Procedure ...............................................................................................67
Replacing the subwoofer............................................. 69
Procedure .............................................................................................. 69
Post-requisites........................................................................................ 69
6

Removing the coin-cell battery.................................... 70
Prerequisites............................................................................................70
Procedure................................................................................................70
Replacing the coin-cell battery.....................................72
Procedure................................................................................................72
Post-requisites........................................................................................ 72
Removing the memory modules................................... 73
Prerequisites............................................................................................73
Procedure................................................................................................74
Replacing the memory modules................................... 76
Procedure................................................................................................76
Post-requisites.........................................................................................77
Removing the solid-state drive.....................................78
Prerequisites............................................................................................78
Procedure................................................................................................79
Replacing the solid-state drive..................................... 81
Procedure................................................................................................ 81
Post-requisites......................................................................................... 81
Removing the wireless card......................................... 82
Prerequisites............................................................................................82
Procedure............................................................................................... 83
Replacing the wireless card..........................................85
Procedure............................................................................................... 85
Post-requisites........................................................................................ 86
7

Removing the heat sink................................................ 87
Prerequisites............................................................................................87
Procedure................................................................................................87
Replacing the heat sink................................................89
Procedure............................................................................................... 89
Post-requisites........................................................................................ 89
Removing the processor...............................................91
Prerequisites............................................................................................ 91
Procedure............................................................................................... 92
Replacing the processor.............................................. 94
Procedure............................................................................................... 94
Post-requisites........................................................................................ 95
Removing the I/O bracket............................................96
Prerequisites........................................................................................... 96
Procedure............................................................................................... 96
Replacing the I/O bracket............................................98
Procedure............................................................................................... 98
Post-requisites........................................................................................ 98
Removing the I/O board.............................................. 99
Prerequisites........................................................................................... 99
Procedure............................................................................................... 99
Replacing the I/O board............................................. 103
Procedure.............................................................................................. 103
Post-requisites.......................................................................................103
8

Removing the system board....................................... 105
Prerequisites..........................................................................................105
Procedure..............................................................................................106
Replacing the system board....................................... 109
Procedure..............................................................................................109
Post-requisites....................................................................................... 110
Removing the middle frame......................................... 111
Prerequisites............................................................................................111
Procedure...............................................................................................112
Replacing the middle frame.........................................113
Procedure...............................................................................................113
Post-requisites........................................................................................116
Removing the display panel......................................... 118
Prerequisites...........................................................................................118
Procedure...............................................................................................118
Replacing the display panel.........................................122
Procedure.............................................................................................. 122
Post-requisites.......................................................................................126
Flashing the BIOS....................................................... 127
BIOS setup program................................................... 128
BIOS overview....................................................................................... 128
Entering BIOS setup program................................................................ 128
System setup options............................................................................ 129
Clearing forgotten passwords................................................................ 134
Prerequisites.................................................................................... 134
9

Procedure........................................................................................135
Post-requisites.................................................................................135
Clearing CMOS settings........................................................................ 136
Prerequisites.................................................................................... 136
Procedure........................................................................................ 136
Post-requisites................................................................................. 137
Diagnostics.................................................................138
Getting help and contacting Dell.................................140
Self-help resources................................................................................ 140
Contacting Dell....................................................................................... 141
10

Identifier GUID-5D3B1051-9384-409A-8D5B-9B53BD496DE8
Status Released
Before working inside your
computer
NOTE: The images in this document may dier from your computer
depending on the conguration you ordered.
Identifier GUID-0CBCCCC8-AEDC-4C92-992B-45062AB0B176
Status Released
Before you begin
1 Save and close all open les and exit all open applications.
2 Shut down your computer. Click Start → Power → Shut down.
NOTE: If you are using a dierent 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.
6 After the computer is unplugged, press and hold the power button for 5 seconds
to ground the system board.
CAUTION: Place the computer on a at, soft, and clean surface to
avoid scratches on the display.
7 Place the computer face down.
11

Identifier GUID-71128823-CE64-4E17-9439-DEE95AF668C4
Status Released
Safety instructions
Use the following safety guidelines to protect your computer from potential damage
and ensure your personal safety.
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For more safety best
practices, see the Regulatory Compliance home page at www.dell.com/
regulatory_compliance.
WARNING: Disconnect all power sources before opening the computer
cover or panels. After you nish working inside the computer, replace all
covers, panels, and screws before connecting to the electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work surface is
at and clean.
CAUTION: To avoid damaging the components and cards, handle them by
their edges, and avoid touching pins and contacts.
CAUTION: You should only perform troubleshooting and repairs as
authorized or directed by the Dell technical assistance team. Damage due to
servicing that is not authorized by Dell is not covered by your warranty. See
the safety instructions that shipped with the product or at www.dell.com/
regulatory_compliance.
CAUTION: Before touching anything inside your computer, ground yourself
by touching an unpainted metal surface, such as the metal at the back of
the computer. While you work, periodically touch an unpainted metal surface
to dissipate static electricity, which could harm internal components.
CAUTION: When you disconnect a cable, pull on its connector or on its pull
tab, not on the cable itself. Some cables have connectors with locking tabs
or thumb-screws that you must disengage before disconnecting the cable.
When disconnecting cables, keep them evenly aligned to avoid bending any
connector pins. When connecting cables, ensure that the ports and
connectors are correctly oriented and aligned.
12

CAUTION: Press and eject any installed card from the media-card reader.
Identifier GUID-DEA55279-6FE6-4A1F-A152-21F8A5572B33
Status Released
Recommended tools
The procedures in this document may require the following tools:
• Phillips screwdriver
• Plastic scribe
Identifier GUID-7A78925A-E09E-447B-800A-3DC937EF2DD5
Status Released
Screw list
Table 1. Screw list
Component Secured to Screw
type
Quantity Screw image
Stand Middle frame M4x6 6
Hard-drive
bracket
Middle frame M3x5 1
Hard drive Hard-drive
bracket
M3x3.5 3
System-board
shield
System board M3x5 6
Fan Middle frame M3x5 3
Solid-state drive System board M2x3.5 1
13

Component Secured to Screw
type
Quantity Screw image
Wireless card
bracket
System board M2x3.5 1
Heat sink Middle frame M3x5 1
Inner frame Middle frame M3x5 8
System board Middle frame M3x5 5
Microphone
board
Middle frame M2x4 4
Subwoofer Middle frame Washer
type
M3x4
4
Side I/O-board
bracket
Middle frame M3x5 2
Media-card
reader
Side I/O-board
bracket
M3x5 2
Side I/O-board Side I/O-board
bracket
M3x5 2
Camera Front bezel M3x5 2
I/O bracket Middle frame M3x5 9
Power-button
board
Middle frame M2x3.5 2
14

Component Secured to Screw
type
Quantity Screw image
I/O board Middle frame M3x5 4
Middle frame Display M3x5 8
Front bezel Middle frame Step type
M3x5.6
6
15

Identifier GUID-06588814-2678-4667-9FF9-C009F4BCE185
Status Released
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.
16

Identifier GUID-93575C2B-9DA3-42EF-B01E-9C841B3CE7F5
Status Released
Technical overview
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at www.dell.com/
regulatory_compliance.
17

Identifier GUID-839B4282-96FD-4A76-896D-C515AA711C21
Status Released
Inside view of your computer
Figure 1. Inside view of your computer
1microphone boards (4) 2 heat sink
3 fan 4 hard drive
5 subwoofer 6 power-button board
7 speakers (2) 8 I/O bracket
9 camera module 10 solid-state drive (M.2)
11 coin-cell battery 12 wireless card
13 side I/O-board 14 media-card reader
15 memory modules (2)
18

Identifier GUID-214C1440-0239-4508-B474-79C9F4F76FCE
Status Released
System-board components
Figure 2. System-board components
1fan-power cable connector
(FAN_SYS)
2 display-cable connector (MB-
DISPC)
3 power-button board cable connector
(0SDC1)
4 power-cable connector (MB-
DCPWR)
5 hard-drive data cable connector
(SATA0)
6 solid-state drive slot (M.2)
19

7 I/O cable connector (RUSBC1) 8 hard-drive power cable connector
(SATA_PWR1)
9 USB Typec-C cable connector (MB-
TYPEC1)
10 system board jumper
11 I/O-board cable connector
(LAUOC1)
12 I/O-board power cable (RPWRC1)
13 subwoofer cable (WOOFC1) 14 speaker cable (SPEAKER)
15 media-card reader cable connector
(SDRDC1)
16 side I/O-board cable connector
(MB-SUSBC)
17 wireless-card socket 18 camera-cable connector
(WEBCAM)
19 microphones-cable connector
(DMIC1)
20 memory module slots (2)
21 processor socket
20