Dell Inspiron 3472 User manual

Inspiron 3472
Service Manual
Regulatory Model: D14S
Regulatory Type: D14S003
October 2022
Rev. A02

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.
© 2018 - 2019 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.

Chapter 1: Before working inside your computer........................................................................... 6
Before you begin .................................................................................................................................................................6
Safety instructions.............................................................................................................................................................. 6
Recommended tools............................................................................................................................................................7
Screw list............................................................................................................................................................................... 7
Chapter 2: After working inside your computer............................................................................. 8
Chapter 3: Technical overview...................................................................................................... 9
System board components................................................................................................................................................9
Chapter 4: Removing the computer cover ................................................................................... 10
Procedure............................................................................................................................................................................ 10
Chapter 5: Replacing the computer cover ....................................................................................11
Procedure............................................................................................................................................................................. 11
Chapter 6: Removing the front bezel ...........................................................................................12
Procedure.............................................................................................................................................................................12
Prerequisites........................................................................................................................................................................13
Chapter 7: Replacing the front bezel............................................................................................14
Procedure.............................................................................................................................................................................14
Post-requisites....................................................................................................................................................................14
Chapter 8: Removing the 2.5-inch hard drive............................................................................... 15
Procedure............................................................................................................................................................................ 15
Prerequisites....................................................................................................................................................................... 16
Chapter 9: Replacing the 2.5-inch hard drive............................................................................... 17
Procedure.............................................................................................................................................................................17
Post-requisites....................................................................................................................................................................17
Chapter 10: Removing the 3.5-inch hard drive............................................................................. 18
Procedure.............................................................................................................................................................................18
Prerequisites....................................................................................................................................................................... 19
Chapter 11: Replacing the 3.5-inch hard drive..............................................................................20
Procedure............................................................................................................................................................................20
Post-requisites...................................................................................................................................................................20
Chapter 12: Removing the optical drive........................................................................................ 21
Procedure.............................................................................................................................................................................21
Contents
Contents 3

Prerequisites.......................................................................................................................................................................22
Chapter 13: Replacing the optical drive....................................................................................... 23
Procedure............................................................................................................................................................................23
Post-requisites................................................................................................................................................................... 23
Chapter 14: Removing the memory module.................................................................................. 24
Removing the power-button module............................................................................................................................24
Prerequisites................................................................................................................................................................. 24
Procedure...................................................................................................................................................................... 24
Procedure............................................................................................................................................................................25
Chapter 15: Replacing the memory module.................................................................................. 27
Procedure............................................................................................................................................................................ 27
Replacing the power-button module............................................................................................................................ 27
Procedure...................................................................................................................................................................... 27
Post-requisites............................................................................................................................................................. 28
Chapter 16: Removing the coin-cell battery................................................................................. 29
Prerequisites.......................................................................................................................................................................29
Procedure............................................................................................................................................................................29
Chapter 17: Replacing the coin-cell battery................................................................................. 30
Procedure............................................................................................................................................................................30
Post-requisites...................................................................................................................................................................30
Chapter 18: Removing the wireless card.......................................................................................31
Prerequisites........................................................................................................................................................................31
Procedure.............................................................................................................................................................................31
Chapter 19: Replacing the wireless card...................................................................................... 33
Procedure............................................................................................................................................................................33
Post-requisites................................................................................................................................................................... 33
Chapter 20: Removing the antenna modules................................................................................ 34
Prerequisites.......................................................................................................................................................................34
Procedure............................................................................................................................................................................34
Chapter 21: Replacing the antenna modules................................................................................ 35
Procedure............................................................................................................................................................................35
Post-requisites...................................................................................................................................................................35
Chapter 22: Removing the power-button module.........................................................................36
Prerequisites.......................................................................................................................................................................36
Procedure............................................................................................................................................................................36
Chapter 23: Replacing the power-button module.........................................................................38
Procedure............................................................................................................................................................................38
4Contents

Post-requisites...................................................................................................................................................................38
Chapter 24: Removing the thermal-cooling assembly.................................................................. 39
Prerequisites.......................................................................................................................................................................39
Procedure............................................................................................................................................................................39
Chapter 25: Replacing the thermal-cooling assembly.................................................................. 40
Procedure............................................................................................................................................................................40
Post-requisites...................................................................................................................................................................40
Chapter 26: Removing the system board......................................................................................41
Prerequisites........................................................................................................................................................................41
Procedure.............................................................................................................................................................................41
Chapter 27: Replacing the system board..................................................................................... 44
Procedure............................................................................................................................................................................44
Post-requisites................................................................................................................................................................... 44
Chapter 28: Downloading drivers.................................................................................................45
Downloading the audio driver.........................................................................................................................................45
Downloading the graphics driver................................................................................................................................... 45
Downloading the USB driver.......................................................................................................................................... 46
Downloading the chipset driver..................................................................................................................................... 46
Downloading the network driver....................................................................................................................................47
Chapter 29: System setup........................................................................................................... 48
Boot Sequence...................................................................................................................................................................48
Navigation keys..................................................................................................................................................................48
System setup......................................................................................................................................................................49
Entering BIOS setup program........................................................................................................................................ 49
System Setup Options..................................................................................................................................................... 49
Flashing the BIOS..............................................................................................................................................................52
Chapter 30: Troubleshooting....................................................................................................... 53
Flashing the BIOS..............................................................................................................................................................53
Reinstall Windows using a USB recovery drive..........................................................................................................53
Enhanced Pre-Boot System Assessment (ePSA) diagnostics...............................................................................54
Running the ePSA Diagnostics.................................................................................................................................54
Diagnostics..........................................................................................................................................................................54
Flea power release............................................................................................................................................................ 55
Wi-Fi power cycle............................................................................................................................................................. 55
Chapter 31: Getting help and contacting Dell...............................................................................56
Contents 5

Before working inside your computer
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Topics:
•Before you begin
•Safety instructions
•Recommended tools
•Screw list
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. After the computer is unplugged, press and hold the power button for 5 seconds to ground the system board.
Safety instructions
Use the following safety guidelines to protect your computer from potential damage and ensure your personal safety.
NOTE: 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.
NOTE: 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.
1
6 Before working inside your computer

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 #1
●Plastic scribe
Screw list
The following table provides the list of screws that are used for securing different components to the computer.
Table 1. Screw list
Component Secured to Screw type Quantity Screw image
Computer cover Chassis #6-32xL6.35 2
2.5-inch hard drive Drive cage #6-32xL3.6 1
2.5-inch hard drive Hard-drive bracket M3xL3.5 4
3.5-inch hard drive Drive cage #6-32xL6.35 1
3.5-inch hard drive Hard-drive bracket #6-32xL3.6 2
Optical drive Chassis #6-32xL6.35 1
Optical drive Drive cage M2xL2 3
Wireless card System board M2xL3.5 1
Thermal-cooling
assembly
System board M6xL10 4
Front I/O bracket Chassis #6-32xL6.35 1
System board Chassis #6-32xL6.35 6
Before working inside your computer 7

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.
2
8 After working inside your computer

Technical overview
NOTE: 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.
Topics:
•System board components
System board components
1. power-button cable connector 2. coin-cell battery
3. wireless-card slot 4. hard-drive and optical drive power-cable connector
5. hard-drive data cable connector (SATA 1) 6. optical-drive data cable connector (SATA 2)
7. processor-fan cable connector 8. CMOS clear jumper
9. password clear jumper 10. service mode jumper
11. memory-module slot
3
Technical overview 9

Removing the computer cover
NOTE: 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.
Topics:
•Procedure
Procedure
1. Place the computer on its side.
2. Remove the two screws (#6-32xL6.35) that secure the cover to the chassis.
3. Slide the computer cover, and lift it off the chassis.
4
10 Removing the computer cover

Replacing the computer cover
NOTE: 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.
Topics:
•Procedure
Procedure
1. Align the tabs on the computer cover with the slots on the chassis and slide it towards the front of the computer until it
snaps into place.
2. Replace the two screws (#6-32xL6.35) that secure the computer cover to the chassis.
3. Place the computer in an upright position.
5
Replacing the computer cover 11

Removing the front bezel
NOTE: 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.
Topics:
•Procedure
•Prerequisites
Procedure
1. Place the computer in an upright position.
2. Release the tabs on the front bezel sequentially from the top, by pushing them outwards from the chassis.
3. Rotate and pull the front bezel away from the front of the computer to release the tabs on the front bezel from the chassis.
6
12 Removing the front bezel

Prerequisites
Remove the computer cover.
Removing the front bezel 13

Replacing the front bezel
NOTE: 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.
Topics:
•Procedure
•Post-requisites
Procedure
1. Align and insert the tabs on the front bezel into the slots on the chassis.
2. Rotate the front bezel towards the chassis until the tabs on the front bezel snap into place.
Post-requisites
Replace the computer cover.
7
14 Replacing the front bezel

Removing the 2.5-inch hard drive
NOTE: 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.
Topics:
•Procedure
•Prerequisites
Procedure
1. Place the computer with the side-chassis facing up. Disconnect the power cables and the data cables from the hard-drive
assembly.
2. Remove the screw (#6-32xL3.6) that secures the hard-drive assembly to the drive cage.
3. Slide the hard-drive assembly, and lift it off the drive cage.
8
Removing the 2.5-inch hard drive 15

4. Remove the four screws (M3xL3.5) that secure the hard drive to the hard-drive bracket.
5. Slide the hard drive out of the hard-drive bracket.
NOTE: Note the orientation of the hard drive so that you can replace it correctly.
Prerequisites
Remove the computer cover.
16 Removing the 2.5-inch hard drive

Replacing the 2.5-inch hard drive
NOTE: 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.
Topics:
•Procedure
•Post-requisites
Procedure
1. Slide the hard drive into the hard-drive bracket.
2. Align the screw holes on the hard drive with the screw holes on the hard-drive bracket.
3. Replace the four screws (M3xL3.5) that secure the hard drive to the hard-drive bracket.
4. Slide the hard-drive assembly towards the back of the slot on the drive cage until it snaps into place.
5. Align the screw holes on the top hard drive with the screw holes on the hard-drive bracket.
6. Replace the screw (#6-32xL3.6) that secures the hard-drive assembly to the drive cage.
7. Connect the data cables and power cables to the hard-drive assembly.
Post-requisites
Replace the computer cover.
9
Replacing the 2.5-inch hard drive 17

Removing the 3.5-inch hard drive
NOTE: 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.
Topics:
•Procedure
•Prerequisites
Procedure
1. Disconnect the power cable and the data cable from the hard-drive assembly.
2. Remove the two screws (#6-32xL6.35) that secure the hard-drive assembly to the drive cage.
3. Slide the hard-drive assembly and lift it off the drive cage.
10
18 Removing the 3.5-inch hard drive

4. Turn the hard-drive assembly over and remove the two screws (#6-32xL3.6) that secure the hard-drive bracket to the
hard-drive assembly.
5. Slide the hard drive out of the hard-drive bracket.
Prerequisites
Remove the computer cover.
Removing the 3.5-inch hard drive 19

Replacing the 3.5-inch hard drive
NOTE: 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.
Topics:
•Procedure
•Post-requisites
Procedure
1. Slide the hard drive into the hard-drive bracket.
2. Align the screw holes on the hard drive with the screw holes on the hard-drive bracket.
3. Replace the two screws (#6-32xL3.6) that secure the hard-drive bracket to the hard drive.
4. Turn the hard-drive assembly over.
5. Slide the hard-drive assembly into the drive cage.
6. Replace the two screws (#6-32xL6.35) that secure the hard-drive assembly to the drive cage.
7. Connect the power cable and data cable to the hard-drive assembly.
Post-requisites
Replace the computer cover.
11
20 Replacing the 3.5-inch hard drive