Dell Inspiron 5490 AIO Inspiron 24-5490 Service Manual - Page 5

Display built-in self test

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69

Diagnostics

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70

Recovering the operating system

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70

Flashing BIOS (USB key)

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71

Flashing the BIOS

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71

WiFi power cycle

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71

Flea power release

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72

6 Getting help and contacting Dell

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73

Contents

5

Section	Page
Inspiron 24-5490 Service Manual	3
Safety instructions	6
Before working inside your computer	6
Before you begin	6
Electrostatic discharge—ESD protection	7
ESD field service kit	7
Transporting sensitive components	8
After working inside your computer	8
Removing and installing components	10
Inside view of your computer	10
Recommended tools	10
Screw list	11
Back cover	12
Removing the back cover	12
Installing the back cover	13
Bottom cover	13
Removing the bottom cover	13
Installing the bottom cover	14
Stand	15
Removing the stand	15
Installing the stand	16
Hard drive	17
Removing the hard drive	17
Installing the hard drive	18
System-board shield	19
Removing the system-board shield	19
Installing the system-board shield	20
Memory modules	21
Removing the memory modules	21
Installing the memory modules	22
Coin-cell battery	23
Removing the coin-cell battery	23
Installing the coin-cell battery	24
Heat sink	25
Removing the heat sink	25
Installing the heat sink	26
Wireless card	27
Removing the wireless card	27
Installing the wireless card	29
Solid-state drive	30
Removing the solid-state drive	30
Installing the solid-state drive	31
Media-card reader	32
Removing the media-card reader	32
Installing the media-card reader	33
Speakers	34
Removing the speakers	34
Installing the speakers	35
Microphones	36
Removing the microphones	36
Installing the mircrophones	37
Fan	38
Removing the fan	38
Installing the fan	39
Antennas	40
Removing the antennas	40
Installing the antennas	41
Camera	42
Removing the camera	42
Installing the camera	43
Power-button board	44
Removing the power-button board	44
Installing the power-button board	45
System board	46
Removing the system board	46
Installing the system board	48
Base panel	51
Removing the base panel	51
Installing the base panel	53
Display panel	55
Removing the display panel	55
Installing the display panel	56
Device drivers	60
Intel Chipset Software Installation Utility	60
Video drivers	60
Intel Serial IO driver	60
Intel Trusted Execution Engine Interface	60
Intel Virtual Button driver	60
Wireless and Bluetooth drivers	60
System setup	61
System setup	61
Entering BIOS setup program	61
Navigation keys	61
Boot Sequence	62
System setup options	62
Clearing CMOS settings	66
Clearing forgotten passwords	67
Troubleshooting	69
Enhanced Pre-Boot System Assessment (ePSA) diagnostics	69
Running the SupportAssist Pre-Boot System Performance Check	69
Display built-in self test	69
Diagnostics	70
Recovering the operating system	70
Flashing BIOS (USB key)	71
Flashing the BIOS	71
WiFi power cycle	71
Flea power release	72

Dell Inspiron 5490 AIO Inspiron 24-5490 Service Manual - Page 5

Getting help and contacting Dell, Display built-in self test, Diagnostics

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