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.

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 - 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

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

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

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

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

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

1Save and close all open €les and exit all open applications.

2Shut 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.

3Disconnect your computer and all attached devices from their electrical outlets.

4Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.

5Remove any media card and optical disc from your computer, if applicable.

6After 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.

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

•Plastic scribe

Screw list

Table 1. : Screw list

Component	Secured to	Screw	Quanti Screw image
		type	ty

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	Middle frame	M2X3	2
Self Test button
Hard-drive cage	Middle frame	M3X4	4
Hard-drive	Hard-drive cage	M2X3	4
interposer
I/O panel	Middle frame	M3X4	4
I/O board	I/O-board panel	M3X4	1
Inner frame	Middle frame	M3X4	14
(touch screen)
Inner frame	Middle frame	M3X4	20
(non-touch
screen)
Memory fan	Middle frame	M3X4	4

Component	Secured to	Screw	Quanti Screw image
		type	ty

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

After working inside your computer

CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

1Replace all screws and ensure that no stray screws remain inside your computer.

2Connect any external devices, peripherals, or cables you removed before working on your computer.

3Replace any media cards, discs, or any other parts that you removed before working on your computer.

4Connect your computer and all attached devices to their electrical outlets.

5Turn on your computer.

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

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

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

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	18	SATA-card slot
	(2)
20

19	chassis-fan cable connector	20	SATA power connector
21	password clear jumper	22	CMOS clear jumper
23	side USB connector	24	touch cable connector
25	camera connector	26	display connector