Dell XPS 27 User manual

XPS 27
Service Manual
Computer Model: XPS 7760
Regulatory Model: W13C
Regulatory Type: W13C001

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 ©2016 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.
2016 - 11
Rev. A00

Contents
Before working inside your computer........................... 12
Before you begin .....................................................................................12
Safety instructions...................................................................................12
Recommended tools................................................................................ 13
Screw list.................................................................................................14
After working inside your computer..............................16
Technical overview.......................................................17
Inside view of your computer (touch screen)...........................................17
Inside view of your computer (non-touch screen)...................................19
System Board Components ................................................................... 20
Removing the USB dongle-bay cover.......................... 22
Procedure............................................................................................... 22
Replacing the USB dongle-bay cover...........................23
Procedure............................................................................................... 23
Removing the back cover............................................ 24
Prerequisites........................................................................................... 24
Procedure (touch screen).......................................................................24
Procedure (non-touch screen)............................................................... 26
Replacing the back cover.............................................28
Procedure............................................................................................... 28
Post-requisites........................................................................................28
3

Removing the memory modules...................................29
Prerequisites........................................................................................... 29
Procedure............................................................................................... 29
Replacing the memory modules....................................31
Procedure................................................................................................31
Post-requisites.........................................................................................31
Removing the hard drive..............................................32
Prerequisites........................................................................................... 32
Procedure............................................................................................... 32
Replacing the hard drive.............................................. 35
Procedure............................................................................................... 35
Post-requisites........................................................................................35
Removing the system-board shield..............................36
Prerequisites........................................................................................... 36
Procedure............................................................................................... 36
Replacing the system-board shield.............................. 38
Procedure............................................................................................... 38
Post-requisites........................................................................................38
Removing the memory fan...........................................39
Prerequisites........................................................................................... 39
Procedure............................................................................................... 39
Replacing the memory fan............................................41
Procedure................................................................................................41
Post-requisites.........................................................................................41
4

Removing the processor heat-sink...............................42
Prerequisites........................................................................................... 42
Procedure............................................................................................... 42
Replacing the processor heat-sink...............................44
Procedure............................................................................................... 44
Post-requisites........................................................................................44
Removing the processor.............................................. 45
Prerequisites........................................................................................... 45
Procedure............................................................................................... 45
Replacing the processor...............................................47
Procedure............................................................................................... 47
Post-requisites........................................................................................48
Removing the coin-cell battery....................................49
Prerequisites........................................................................................... 49
Procedure...............................................................................................50
Replacing the coin-cell battery.....................................51
Procedure................................................................................................51
Post-requisites.........................................................................................51
Removing the solid-state drive.................................... 52
Prerequisites........................................................................................... 52
Procedure............................................................................................... 52
Replacing the solid-state drive.................................... 54
Procedure............................................................................................... 54
Post-requisites........................................................................................54
5

Removing the wireless card.........................................55
Prerequisites...........................................................................................55
Procedure...............................................................................................55
Replacing the wireless card......................................... 57
Procedure............................................................................................... 57
Post-requisites........................................................................................58
Removing the stand.....................................................59
Prerequisites...........................................................................................59
Procedure............................................................................................... 59
Replacing the stand......................................................61
Procedure................................................................................................61
Post-requisites.........................................................................................61
Removing the chassis fan............................................ 62
Prerequisites........................................................................................... 62
Procedure............................................................................................... 62
Replacing the chassis fan............................................ 65
Procedure............................................................................................... 65
Post-requisites........................................................................................65
Removing the power-supply unit................................. 66
Prerequisites...........................................................................................66
Procedure............................................................................................... 66
Replacing the power-supply unit..................................69
Procedure............................................................................................... 69
Post-requisites........................................................................................69
6

Removing the inner frame............................................70
Prerequisites........................................................................................... 70
Procedure................................................................................................ 71
Replacing the inner frame............................................ 73
Procedure............................................................................................... 73
Post-requisites........................................................................................ 73
Removing the display built-in self test button board.... 74
Prerequisites........................................................................................... 74
Procedure............................................................................................... 74
Replacing the display built-in self test button board.... 76
Procedure............................................................................................... 76
Post-requisites........................................................................................76
Removing the microphones..........................................77
Prerequisites............................................................................................77
Procedure................................................................................................77
Replacing the microphones..........................................79
Procedure............................................................................................... 79
Post-requisites........................................................................................79
Removing the I/O panel...............................................80
Prerequisites...........................................................................................80
Procedure............................................................................................... 80
Replacing the I/O panel............................................... 82
Procedure............................................................................................... 82
Post-requisites........................................................................................82
7

Removing the USB-dongle port................................... 83
Prerequisites........................................................................................... 83
Procedure............................................................................................... 84
Replacing the USB-dongle port................................... 86
Procedure............................................................................................... 86
Post-requisites........................................................................................86
Removing the diagnostic light and button board.......... 87
Prerequisites........................................................................................... 87
Procedure............................................................................................... 88
Replacing the diagnostic light and button board...........91
Procedure................................................................................................91
Post-requisites.........................................................................................91
Removing the hard-drive cage.....................................92
Prerequisites........................................................................................... 92
Procedure............................................................................................... 92
Replacing the hard-drive cage..................................... 95
Procedure............................................................................................... 95
Post-requisites........................................................................................95
Removing the converter board.................................... 96
Prerequisites...........................................................................................96
Procedure............................................................................................... 96
Replacing the converter board.....................................99
Procedure............................................................................................... 99
Post-requisites........................................................................................99
8

Removing the speakers.............................................. 100
Prerequisites..........................................................................................100
Procedure .............................................................................................100
Replacing the speakers...............................................102
Procedure .............................................................................................102
Post-requisites...................................................................................... 102
Removing the power-button board.............................103
Prerequisites..........................................................................................103
Procedure..............................................................................................103
Replacing the power-button board.............................105
Procedure..............................................................................................105
Post-requisites...................................................................................... 105
Removing the media-card reader............................... 106
Prerequisites..........................................................................................106
Procedure..............................................................................................106
Replacing the media-card reader................................108
Procedure..............................................................................................108
Post-requisites...................................................................................... 108
Removing the camera.................................................109
Prerequisites..........................................................................................109
Procedure..............................................................................................109
Replacing the camera.................................................. 111
Procedure............................................................................................... 111
Post-requisites........................................................................................111
9

Removing the system board........................................112
Prerequisites...........................................................................................112
Procedure...............................................................................................113
Replacing the system board........................................116
Procedure...............................................................................................116
Post-requisites....................................................................................... 116
Removing the display assembly...................................118
Prerequisites...........................................................................................118
Procedure...............................................................................................119
Replacing the display assembly.................................. 120
Procedure..............................................................................................120
Post-requisites...................................................................................... 120
Removing the middle frame........................................122
Prerequisites..........................................................................................122
Procedure..............................................................................................123
Replacing the middle frame........................................ 125
Procedure..............................................................................................125
Post-requisites...................................................................................... 125
Removing the speaker bezel.......................................127
Prerequisites..........................................................................................127
Procedure..............................................................................................128
Replacing the speaker bezel....................................... 129
Procedure..............................................................................................129
Post-requisites...................................................................................... 129
10

Removing the display panel.........................................131
Prerequisites...........................................................................................131
Procedure..............................................................................................132
Replacing the display panel........................................ 133
Procedure..............................................................................................133
Post-requisites...................................................................................... 136
BIOS setup program...................................................138
BIOS Overview......................................................................................138
Entering BIOS setup program................................................................138
Clearing forgotten passwords................................................................139
Prerequisites....................................................................................139
Procedure........................................................................................139
Post-requisites................................................................................ 140
Clearing CMOS Settings........................................................................140
Prerequisites.....................................................................................141
Procedure.........................................................................................141
Post-requisites.................................................................................142
Flashing the BIOS.......................................................143
System diagnostic lights.............................................144
Getting help and contacting Dell................................ 146
Self-help resources................................................................................146
Contacting Dell......................................................................................146
11

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.
The shut-down instruction varies depending on the operating system installed on
your computer.
– Windows 10: Click Start → Power → Shut down.
– Windows 8.1: On the Start screen, click the power icon → Shut down.
– Windows 7: Click Start → 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.
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 flat, soft, and clean surface to
avoid scratches on the display.
7 Place the computer face down.
Safety instructions
Use the following safety guidelines to protect your computer from potential damage
and ensure your personal safety.
12

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 finish 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 flat 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.
CAUTION: Press and eject any installed card from the media-card reader.
Recommended tools
The procedures in this document may require the following tools:
• Phillips screwdriver
13

• Plastic scribe
Screw list
Table 1. : Screw list
Component Secured to Screw
type Quanti ty Screw image
Back-light cable System board M3X4 1
Camera Middle frame M2X3 2
Chassis fan System board M2X3 4
Converter board Middle frame M3X4 3
Display Built-in
Self Test button
Middle frame M2X3 2
Hard-drive cage Middle frame M3X4 4
Hard-drive
interposer
Hard-drive cage M2X3 4
I/O panel Middle frame M3X4 4
I/O board I/O-board panel M3X4 1
Inner frame
(touch screen)
Middle frame M3X4 14
Inner frame
(non-touch
screen)
Middle frame M3X4 20
Memory fan Middle frame M3X4 4
14

Component Secured to Screw
type Quanti ty Screw image
Media-card
reader shield
Middle frame M2X3 2
Middle frame Display M2X4 7
Middle frame Display M2X3 6
Power-supply
unit
Middle frame M3X4 5
Power-button
board shield
Middle frame M2X3 2
Processor heat-
sink
Middle frame M3X4 1
Stand Middle frame M4X6 6
System-board
shield
System board M3X4 3
System board Middle frame M3X4 12
Speakers Middle frame M3X4 8
USB dongle port I/O panel M3X4 3
Wireless card
shield
System board M2X2.5 2
Wireless card
bracket
System board M2X2.5 1
15

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

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.
Inside view of your computer (touch screen)
Figure 1. : Inside view of your computer
12.5-inch hard drive 2 hard-drive cage
3 power-supply unit 4 chassis fan
17

5 system board 6 microphone module
7 coin-cell battery 8 middle frame
9 processor heat-sink 10 processor
11 memory module 12 wireless-card shield
13 solid-state drive (M.2) 14 I/O board
15 speakers (2) 16 memory fan
17 I/O panel 18 camera
19 USB dongle-port 20 display built-in self test button
board
21 power-button board
18

Inside view of your computer (non-touch
screen)
Figure 2. : Inside view of your computer (non-touch screen)
12.5-inch hard drive 2 hard-drive cage
3 power-supply unit 4 chassis fan
5 microphone module 6 system board
7 coin-cell battery 8 middle frame
9 processor heat-sink 10 processor
11 memory module 12 wireless-card shield
13 solid-state drive (M.2) 14 I/O board
15 speakers (2) 16 memory fan
17 I/O panel 18 camera
19 USB dongle-port 20 display built-in self test button
board
19

21 power-button board
System Board Components
Figure 3. : System board components
1microphone cable connector 2 processor socket
3 coin-cell battery connector 4 memory module slot
5 wireless-card slot 6 audio-cable connector
7 media-card connector 8 SSD-card connector (M.2)
9 speaker cable connector 10 converter-board cable connector
11 memory-fan cable connector 12 USB 3.0 ports (4)
13 HDMI port 14 display port
15 power-supply unit cable connector 16 network port
20