Dell Vostro 3400 User manual

Vostro 3400
Service Manual
Regulatory Model: P132G
Regulatory Type: P132G003 / P132G004
November 2020
Rev. A00

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.
© 2020 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: Working on your computer........................................................................................... 6
Safety instructions.............................................................................................................................................................. 6
Before working inside your computer....................................................................................................................... 6
Safety precautions.........................................................................................................................................................7
Electrostatic discharge—ESD protection................................................................................................................7
ESD field service kit ..................................................................................................................................................... 8
After working inside your computer..........................................................................................................................9
Chapter 2: Technology and components.......................................................................................10
USB features.......................................................................................................................................................................10
Power button LED behavior............................................................................................................................................ 12
HDMI 1.4............................................................................................................................................................................... 14
Chapter 3: Exploded View............................................................................................................ 15
Chapter 4: Major Components..................................................................................................... 18
Chapter 5: Disassembly and reassembly ......................................................................................19
Secure Digital Card............................................................................................................................................................19
Removing the Secure Digital card............................................................................................................................19
Installing the Secure Digital card............................................................................................................................. 20
Base cover........................................................................................................................................................................... 21
Removing the base cover...........................................................................................................................................21
Installing the base cover............................................................................................................................................ 23
Battery................................................................................................................................................................................. 25
Lithium-ion battery precautions...............................................................................................................................25
Disconnecting the battery.........................................................................................................................................25
Reconnecting the battery......................................................................................................................................... 26
Removing the battery.................................................................................................................................................27
Installing the battery...................................................................................................................................................28
Memory modules............................................................................................................................................................... 30
Removing the memory module.................................................................................................................................30
Installing the memory module...................................................................................................................................30
WLAN card...........................................................................................................................................................................31
Removing the WLAN card..........................................................................................................................................31
Installing the WLAN card........................................................................................................................................... 32
Solid-state drive................................................................................................................................................................ 34
Removing the M.2 2230 Solid-state drive.............................................................................................................34
Installing the M.2 2230 Solid-state drive...............................................................................................................34
Removing the M.2 2280 Solid-state drive............................................................................................................ 35
Installing the M.2 2280 Solid-state drive...............................................................................................................36
Hard drive............................................................................................................................................................................ 37
Removing the hard drive assembly..........................................................................................................................37
Installing the hard drive assembly........................................................................................................................... 38
Contents
Contents 3

Coin-cell battery................................................................................................................................................................ 40
Removing the coin-cell...............................................................................................................................................40
Installing the coin-cell battery...................................................................................................................................41
System fan...........................................................................................................................................................................41
Removing the system fan...........................................................................................................................................41
Installing the system fan............................................................................................................................................ 42
Heat sink..............................................................................................................................................................................43
Removing the Heatsink - UMA.................................................................................................................................43
Installing the Heatsink - UMA...................................................................................................................................44
Removing the Heatsink - Discrete.......................................................................................................................... 45
Installing the Heatsink - Discrete.............................................................................................................................46
Speakers.............................................................................................................................................................................. 47
Removing the speakers.............................................................................................................................................. 47
Installing the speakers................................................................................................................................................ 48
IO board............................................................................................................................................................................... 49
Removing the IO board.............................................................................................................................................. 49
Installing the IO board................................................................................................................................................ 50
Touchpad............................................................................................................................................................................. 51
Removing the touch pad assembly..........................................................................................................................51
Installing the touch pad assembly........................................................................................................................... 52
Display assembly................................................................................................................................................................54
Removing the display assembly............................................................................................................................... 54
Installing the display assembly................................................................................................................................. 56
Display bezel.......................................................................................................................................................................58
Removing the display bezel.......................................................................................................................................58
Installing the display bezel ........................................................................................................................................ 61
Display panel.......................................................................................................................................................................62
Removing the display panel.......................................................................................................................................62
Installation display panel............................................................................................................................................ 64
Camera.................................................................................................................................................................................66
Removing the camera................................................................................................................................................ 66
Installing the camera...................................................................................................................................................67
Display back-cover and antenna assembly................................................................................................................. 68
Removing the display back-cover........................................................................................................................... 68
Installing the display back-cover..............................................................................................................................68
Power button..................................................................................................................................................................... 69
Removing the power button.....................................................................................................................................69
Installing the power button....................................................................................................................................... 70
System board...................................................................................................................................................................... 71
Removing the system board...................................................................................................................................... 71
Installing the system board........................................................................................................................................74
Power-adapter port.......................................................................................................................................................... 76
Removing the power adapter port.......................................................................................................................... 76
Installing the power adapter port.............................................................................................................................77
Palm-rest and keyboard assembly.................................................................................................................................78
Removing the palmrest and keyboard assembly.................................................................................................. 78
Chapter 6: Troubleshooting.........................................................................................................80
Enhanced Pre-Boot System Assessment (ePSA) diagnostics...............................................................................80
Running SupportAssist diagnostics.........................................................................................................................80
4Contents

System diagnostic lights...................................................................................................................................................81
WiFi power cycle............................................................................................................................................................... 82
Chapter 7: Getting help............................................................................................................... 83
Contacting Dell...................................................................................................................................................................83
Contents 5