Dell XPS 27 7760 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.

trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be

trademarks of their respective owners.

2017 - 07

Rev. A02

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 for computers with integrated graphics..................................42

Procedure for computers with discrete graphics..................................... 43

Replacing the processor heat-sink............................... 45

Procedure............................................................................................... 45

Post-requisites........................................................................................ 45

Removing the processor.............................................. 46

Prerequisites........................................................................................... 46

Procedure............................................................................................... 46

Replacing the processor.............................................. 48

Procedure............................................................................................... 48

Post-requisites........................................................................................ 49

Removing the coin-cell battery.................................... 50

Prerequisites........................................................................................... 50

Procedure................................................................................................ 51

Replacing the coin-cell battery.................................... 52

Procedure............................................................................................... 52

Post-requisites........................................................................................ 52

Removing the solid-state drive.................................... 53

Prerequisites........................................................................................... 53

Procedure............................................................................................... 53

Replacing the solid-state drive.....................................55

Procedure............................................................................................... 55

Post-requisites........................................................................................ 55

5

Removing the wireless card......................................... 56

Prerequisites........................................................................................... 56

Procedure............................................................................................... 56

Replacing the wireless card..........................................58

Procedure............................................................................................... 58

Post-requisites........................................................................................ 59

Removing the stand.....................................................60

Prerequisites........................................................................................... 60

Procedure............................................................................................... 60

Replacing the stand..................................................... 62

Procedure............................................................................................... 62

Post-requisites........................................................................................ 62

Removing the chassis fan............................................ 63

Prerequisites........................................................................................... 63

Procedure............................................................................................... 63

Replacing the chassis fan.............................................66

Procedure............................................................................................... 66

Post-requisites........................................................................................ 66

Removing the power-supply unit..................................67

Prerequisites............................................................................................67

Procedure................................................................................................67

Replacing the power-supply unit.................................. 70

Procedure................................................................................................70

Post-requisites........................................................................................ 70

6

Removing the inner frame............................................ 71

Prerequisites............................................................................................ 71

Procedure................................................................................................72

Replacing the inner frame............................................ 74

Procedure................................................................................................74

Post-requisites.........................................................................................74

Removing the display built-in self test button board.....75

Prerequisites............................................................................................75

Procedure................................................................................................75

Replacing the display built-in self test button board..... 77

Procedure................................................................................................77

Post-requisites.........................................................................................77

Removing the microphones..........................................78

Prerequisites............................................................................................78

Procedure................................................................................................78

Replacing the microphones..........................................80

Procedure............................................................................................... 80

Post-requisites........................................................................................ 80

Removing the I/O panel................................................81

Prerequisites............................................................................................ 81

Procedure................................................................................................ 81

Replacing the I/O panel............................................... 83

Procedure............................................................................................... 83

Post-requisites........................................................................................ 83

7

Removing the USB-dongle port................................... 84

Prerequisites............................................................................................84

Procedure............................................................................................... 85

Replacing the USB-dongle port....................................87

Procedure................................................................................................87

Post-requisites.........................................................................................87

Removing the diagnostic light and button board.......... 88

Prerequisites........................................................................................... 88

Procedure............................................................................................... 89

Replacing the diagnostic light and button board.......... 92

Procedure............................................................................................... 92

Post-requisites........................................................................................ 92

Removing the hard-drive cage..................................... 93

Prerequisites............................................................................................93

Procedure............................................................................................... 93

Replacing the hard-drive cage..................................... 96

Procedure............................................................................................... 96

Post-requisites........................................................................................ 96

Removing the converter board..................................... 97

Prerequisites............................................................................................97

Procedure................................................................................................97

Replacing the converter board................................... 100

Procedure..............................................................................................100

Post-requisites.......................................................................................100

8

Removing the speakers............................................... 101

Prerequisites...........................................................................................101

Procedure ..............................................................................................101

Replacing the speakers...............................................103

Procedure .............................................................................................103

Post-requisites.......................................................................................103

Removing the power-button board............................. 104

Prerequisites..........................................................................................104

Procedure..............................................................................................104

Replacing the power-button board............................. 106

Procedure..............................................................................................106

Post-requisites.......................................................................................106

Removing the media-card reader................................ 107

Prerequisites.......................................................................................... 107

Procedure.............................................................................................. 107

Replacing the media-card reader................................109

Procedure..............................................................................................109

Post-requisites.......................................................................................109

Removing the camera................................................. 110

Prerequisites...........................................................................................110

Procedure...............................................................................................110

Replacing the camera..................................................112

Procedure...............................................................................................112

Post-requisites........................................................................................112

9

Removing the system board........................................ 113

Prerequisites...........................................................................................113

Procedure...............................................................................................114

Replacing the system board........................................ 117

Procedure...............................................................................................117

Post-requisites........................................................................................117

Removing the display assembly...................................119

Prerequisites...........................................................................................119

Procedure..............................................................................................120

Replacing the display assembly................................... 121

Procedure...............................................................................................121

Post-requisites........................................................................................121

Removing the middle frame........................................ 123

Prerequisites.......................................................................................... 123

Procedure.............................................................................................. 124

Replacing the middle frame........................................ 126

Procedure..............................................................................................126

Post-requisites.......................................................................................126

Removing the speaker bezel....................................... 128

Prerequisites.......................................................................................... 128

Procedure..............................................................................................129

Replacing the speaker bezel....................................... 130

Procedure..............................................................................................130

Post-requisites.......................................................................................130

10

Removing the display panel........................................ 132

Prerequisites.......................................................................................... 132

Procedure.............................................................................................. 133

Replacing the display panel.........................................134

Procedure.............................................................................................. 134

Post-requisites....................................................................................... 137

BIOS setup program................................................... 139

BIOS overview.......................................................................................139

Entering the BIOS setup program.......................................................... 139

Clearing forgotten passwords................................................................ 139

Prerequisites.................................................................................... 140

Procedure........................................................................................140

Post-requisites..................................................................................141

Clearing CMOS settings......................................................................... 141

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 dier from your computer

depending on the conguration you ordered.

Before you begin

1 Save and close all open les 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 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.

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 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.

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

• Plastic scribe

13

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

1

2.5-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)

1

2.5-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

1 microphone 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

17 Thunderbolt 3 (USB Type-C) ports

(2)

18 SATA-card slot

20

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Dell XPS 27 7760 User manual

Dell XPS 27 7760 User manual

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