Dell P78G User manual

Inspiron 14 7000 Gaming
Service Manual
Computer Model: Inspiron 14-7467
Regulatory Model: P78G
Regulatory Type: P78G001

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........................... 10
Before you begin .....................................................................................10
Safety instructions...................................................................................10
Recommended tools.................................................................................11
Screw list.................................................................................................12
After working inside your computer..............................14
Removing the base cover............................................. 15
Procedure................................................................................................15
Replacing the base cover..............................................17
Procedure................................................................................................ 17
Removing the battery...................................................18
Prerequisites............................................................................................18
Procedure................................................................................................18
Replacing the battery.................................................. 20
Procedure............................................................................................... 20
Post-requisites........................................................................................20
Removing the memory modules....................................21
Prerequisites............................................................................................21
Procedure................................................................................................21
3

Replacing the memory modules................................... 23
Procedure............................................................................................... 23
Post-requisites........................................................................................24
Removing the hard drive..............................................25
Prerequisites........................................................................................... 25
Procedure............................................................................................... 25
Replacing the hard drive.............................................. 28
Procedure............................................................................................... 28
Post-requisites........................................................................................28
Removing the solid-state drive.................................... 29
Prerequisites........................................................................................... 29
Procedure............................................................................................... 29
Replacing the solid-state drive..................................... 31
Procedure................................................................................................31
Post-requisites........................................................................................32
Removing the wireless card......................................... 33
Prerequisites........................................................................................... 33
Procedure............................................................................................... 33
Replacing the wireless card......................................... 35
Procedure............................................................................................... 35
Post-requisites........................................................................................36
Removing the coin-cell battery.................................... 37
Prerequisites........................................................................................... 37
Procedure............................................................................................... 37
4

Replacing the coin-cell battery.................................... 39
Procedure............................................................................................... 39
Post-requisites........................................................................................39
Removing the rear cover............................................. 40
Prerequisites........................................................................................... 40
Procedure............................................................................................... 40
Replacing the rear cover..............................................42
Procedure............................................................................................... 42
Post-requisites........................................................................................42
Removing the palm rest and keyboard assembly..........43
Prerequisites........................................................................................... 43
Procedure............................................................................................... 43
Replacing the palm rest and keyboard assembly..........49
Procedure............................................................................................... 49
Post-requisites........................................................................................49
Removing the I/O board.............................................. 50
Prerequisites...........................................................................................50
Procedure...............................................................................................50
Replacing the I/O board.............................................. 52
Procedure............................................................................................... 52
Post-requisites........................................................................................52
Removing the fans.......................................................53
Prerequisites........................................................................................... 53
Procedure............................................................................................... 53
5

Replacing the fans.......................................................56
Procedure............................................................................................... 56
Post-requisites........................................................................................56
Removing the power-adapter port...............................57
Prerequisites........................................................................................... 57
Procedure............................................................................................... 58
Replacing the power-adapter port...............................60
Procedure............................................................................................... 60
Post-requisites........................................................................................60
Removing the status-light board.................................. 61
Prerequisites............................................................................................61
Procedure................................................................................................61
Replacing the status-light board..................................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 power-button board.............................. 67
Prerequisites........................................................................................... 67
Procedure............................................................................................... 67
6

Replacing the power-button board.............................. 69
Procedure............................................................................................... 69
Post-requisites........................................................................................69
Removing the touch pad..............................................70
Prerequisites........................................................................................... 70
Procedure............................................................................................... 70
Replacing the touch pad.............................................. 72
Procedure............................................................................................... 72
Post-requisites........................................................................................ 72
Removing the system board.........................................73
Prerequisites........................................................................................... 73
Procedure............................................................................................... 73
Replacing the system board......................................... 77
Procedure................................................................................................77
Post-requisites........................................................................................ 78
Entering the Service Tag in the BIOS setup program..............................78
Removing the heat sink................................................79
Prerequisites........................................................................................... 79
Procedure............................................................................................... 79
Replacing the heat sink................................................ 81
Procedure................................................................................................81
Post-requisites.........................................................................................81
Removing the display assembly................................... 82
Prerequisites........................................................................................... 82
Procedure............................................................................................... 82
7

Replacing the display assembly....................................86
Procedure............................................................................................... 86
Post-requisites........................................................................................86
Removing the display bezel..........................................88
Prerequisites........................................................................................... 88
Procedure............................................................................................... 88
Replacing the display bezel..........................................90
Procedure............................................................................................... 90
Post-requisites........................................................................................90
Removing the display hinges........................................ 91
Prerequisites............................................................................................91
Procedure................................................................................................91
Replacing the display hinges........................................93
Procedure............................................................................................... 93
Post-requisites........................................................................................93
Removing the display panel..........................................94
Prerequisites........................................................................................... 94
Procedure............................................................................................... 94
Replacing the display panel..........................................97
Procedure............................................................................................... 97
Post-requisites........................................................................................97
Removing the display cable..........................................98
Prerequisites........................................................................................... 98
Procedure............................................................................................... 98
8

Replacing the display cable........................................ 100
Procedure..............................................................................................100
Post-requisites...................................................................................... 100
Removing the camera................................................. 101
Prerequisites.......................................................................................... 101
Procedure.............................................................................................. 101
Replacing the camera.................................................103
Procedure..............................................................................................103
Post-requisites...................................................................................... 103
Removing the display back-cover and antenna
assembly.................................................................... 104
Prerequisites..........................................................................................104
Procedure..............................................................................................105
Replacing the display back-cover and antenna
assembly.................................................................... 107
Procedure..............................................................................................107
Post-requisites.......................................................................................107
Flashing the BIOS.......................................................108
Diagnostics.................................................................109
Getting help and contacting Dell..................................111
Self-help resources................................................................................. 111
Contacting Dell........................................................................................111
9

Before working inside your
computer
NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.
Before you begin
1 Save and close all open files and exit all open applications.
2 Shut down your computer. Click Start → Power → Shut down.
NOTE: If you are using a different operating system, see the
documentation of your operating system for shut-down instructions.
3 Disconnect your computer and all attached devices from their electrical outlets.
4 Disconnect all attached network devices and peripherals, such as keyboard,
mouse, and monitor from your computer.
5 Remove any media card and optical disc from your computer, if applicable.
6 Close the display and turn the computer over.
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.
10

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:
• Philips screwdriver
• Torx #8 (T8) screwdriver
• Plastic scribe
11

Screw list
Table 1. Screw list
Component Secured to Screw type Quantity Screw
image
Battery Computer base M2x4 T8 4
Hard drive Computer base M2.5x3
Ladder type
4
Hard-drive bracket Hard drive M3x3 4
Solid-state drive Computer base M2x3 1
Wireless-card bracket Computer base M2x3 1
Rear cover Computer base M2x3 Big
head
4
Palm rest and
keyboard assembly
Computer base M2.5x5 16
Palm rest and
keyboard assembly
Computer base M2.5x8 2
I/O board Computer base M2x3 1
Fan Computer base M2x3 6
Power-adapter port
bracket
Computer base M2x3 4
Status-light board Computer base M2x3 2
12

Component Secured to Screw type Quantity Screw
image
Speaker Computer base M2x3 Big
head
6
Power-button board Palm rest and
keyboard assembly
M2x2.5 2
Touch pad Palm rest and
keyboard assembly
M2x2 4
Display-cable bracket System board M2x3 1
System board Computer base M2x3 2
Heat sink System board M2x3 6
Display assembly Computer base M2x3 2
Display assembly Computer base M2.5x5 2
Display assembly Computer base M2.5x5 2
Display hinge Display back-cover M2.5x2.5 8
Display panel Display back-over M2x3 4
13

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.
14

Removing the base cover
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.
Procedure
1 Loosen the captive screw that secures the base cover to the computer base.
2 Using your fingertips, pry and lift the base cover off the computer base.
15

3 Disconnect the battery cable from the system board.
16

Replacing the base cover
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.
Procedure
1 Connect the battery cable to the system board.
2 Slide the tabs on the base cover into the slots on the computer base and snap
the base cover into place.
3 Tighten the captive screw that secures the base cover to the computer base.
17

Removing the battery
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.
Prerequisites
Remove the base cover.
Procedure
1 Remove the battery cable from the routing guide on the computer base.
2 Remove the four screws (M2x4 T8) that secure the battery to the computer
base.
18

3 Lift the battery off the computer base.
4 Turn the computer over, open the display, and press and hold the power button
for five seconds to ground the system board.
19

Replacing the battery
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.
Procedure
1 Align the screw holes on the battery with the screw holes on the computer base.
2 Replace the four screws (M2x4 T8) that secure the battery to the computer
base.
3 Route the battery cable through the routing guide on the computer base.
Post-requisites
Replace the base cover.
20