1 Working on your computer............................................................................................................................. 7
Before working inside your computer..............................................................................................................................7
Turning o your computer.......................................................................................................................................... 8
After working inside your computer.................................................................................................................................8
2 Removing and installing components.............................................................................................................9
Base cover.......................................................................................................................................................................... 9
Removing the base cover........................................................................................................................................... 9
Installing the base cover.............................................................................................................................................11
Removing the battery.................................................................................................................................................11
Installing the battery...................................................................................................................................................12
Power and volume control board.................................................................................................................................... 12
Removing the power and volume control board..................................................................................................... 12
Installing the power and volume control board....................................................................................................... 13
Hard disk drive (HDD)......................................................................................................................................................14
Removing the HDD.....................................................................................................................................................14
Installing the HDD....................................................................................................................................................... 14
Removing the coin cell battery................................................................................................................................. 15
Installing the coin cell battery....................................................................................................................................15
Removing the WLAN card.........................................................................................................................................16
Installing the WLAN.................................................................................................................................................... 17
Removing the memory module................................................................................................................................. 17
Installing the memory module................................................................................................................................... 18
Removing the speakers..............................................................................................................................................18
Installing the speakers............................................................................................................................................... 20
System fan........................................................................................................................................................................20
Removing the system fan......................................................................................................................................... 20
Installing the system fan............................................................................................................................................ 21
Removing the heat sink............................................................................................................................................. 21
Installing the heat sink...............................................................................................................................................22
LED board......................................................................................................................................................................... 22
Removing the LED board..........................................................................................................................................22
Installing the LED board............................................................................................................................................ 24
Removing the Input-Output board.......................................................................................................................... 24
Contents
3
Installing the Input-Output board.............................................................................................................................26
Removing the touchpad ...........................................................................................................................................27
Installing the touchpad..............................................................................................................................................29
Removing the display assembly............................................................................................................................... 29
Installing the display assembly...................................................................................................................................31
Removing the display cover.......................................................................................................................................31
Installing the display cover........................................................................................................................................33
Removing the display cable...................................................................................................................................... 33
Installing the display cable.........................................................................................................................................34
Removing the camera............................................................................................................................................... 35
Installing the camera..................................................................................................................................................35
System board....................................................................................................................................................................36
Removing the system board..................................................................................................................................... 36
Installing the system board....................................................................................................................................... 39
Power connector port..................................................................................................................................................... 40
Removing the power connector port...................................................................................................................... 40
Installing the power connector port........................................................................................................................ 40
Removing the palmrest..............................................................................................................................................41
Installing the palmrest................................................................................................................................................42
3 Technology and components........................................................................................................................43
Power adapter..................................................................................................................................................................43
Identifying processors in Windows 10........................................................................................................................... 45
Verifying the processor usage in Task Manager.......................................................................................................... 45
Verifying the processor usage in Resource Monitor....................................................................................................45
Downloading the chipset driver............................................................................................................................... 46
Identifying the display adapter........................................................................................................................................47
Changing the screen resolution......................................................................................................................................47
Rotating the display.........................................................................................................................................................48
Adjusting brightness in Windows 10.............................................................................................................................. 48
Cleaning the display.........................................................................................................................................................49
Using touch screen in Windows 10................................................................................................................................49
Connecting to external display devices......................................................................................................................... 49
Contents
4
Realtek ALC3253 Waves MaxxAudio Pro controller....................................................................................................49
Downloading the audio driver...................................................................................................................................49
Identifying the audio controller in Windows 10.......................................................................................................50
Changing the audio settings.....................................................................................................................................50
Hard drive options............................................................................................................................................................ 51
Identifying the hard drive in Windows 10.................................................................................................................51
Identifying the hard drive in the BIOS......................................................................................................................51
USB features.................................................................................................................................................................... 52
USB 3.0/USB 3.1 Gen 1 (SuperSpeed USB)...........................................................................................................52
Advantages of HDMI.................................................................................................................................................54
USB Powershare.............................................................................................................................................................. 55
Camera features.............................................................................................................................................................. 55
Identifying the camera in Device Manager on Windows 10..................................................................................55
Starting the camera...................................................................................................................................................56
Starting the camera application...............................................................................................................................56
Verifying system memory in Windows 10................................................................................................................ 57
Verifying system memory in system setup BIOS................................................................................................... 57
Testing memory using ePSA..................................................................................................................................... 57
4 System specications..................................................................................................................................58
Port and connector specications.................................................................................................................................58
Communication specications....................................................................................................................................... 59
Camera specications..................................................................................................................................................... 59
Video specications.........................................................................................................................................................59
System specications......................................................................................................................................................60
AC Adapter specications...............................................................................................................................................62
5 System Setup..............................................................................................................................................63
System setup options......................................................................................................................................................63
General screen options..............................................................................................................................................63
Contents
5
Video screen options................................................................................................................................................. 64
Power Management screen options........................................................................................................................68
POST Behavior...........................................................................................................................................................69
Virtualization Support options...................................................................................................................................71
System Log.................................................................................................................................................................72
System setup options......................................................................................................................................................73
General screen options....................................................................................................................................................73
System Conguration screen options............................................................................................................................74
Video screen options....................................................................................................................................................... 75
Power Management screen options.............................................................................................................................. 78
POST Behavior screen options.......................................................................................................................................78
Virtualization support screen options............................................................................................................................79
System Log screen options............................................................................................................................................ 80
Updating the BIOS in Windows .................................................................................................................................... 80
System and setup password........................................................................................................................................... 81
Assigning a system password and setup password................................................................................................81
Deleting or changing an existing system and or setup password.........................................................................81
Intel HD Graphics drivers.......................................................................................................................................... 84
Realtek HD audio drivers...........................................................................................................................................85
Enhanced Pre-Boot System Assessment — ePSA diagnostics................................................................................ 87
System diagnostic lights..................................................................................................................................................87
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise
noted, each procedure included in this document assumes that the following conditions exist:
•You have read the safety information that shipped with your computer.
•A component can be replaced or, if purchased separately, installed by performing the removal procedure in the reverse order.
WARNING: Disconnect all power sources before opening the computer cover or panels. After you nish working inside the
computer, replace all covers, panels, and screws before connecting to the power source.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional
safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance
CAUTION: Many repairs may only be done by a certied service technician. You should only perform troubleshooting and simple
repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that came with the product.
1
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an
unpainted metal surface that is grounded to ground yourself before you touch the computer to perform any disassembly tasks.
CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its
edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.
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; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the
cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a
cable, ensure that both connectors are correctly oriented and aligned.
NOTE: The color of your computer and certain components may appear dierently than shown in this document.
Before working inside your computer
To avoid damaging your computer, perform the following steps before you begin working inside the computer.
1 Ensure that you follow the Safety instructions.
2 Ensure that your work surface is at and clean to prevent the computer cover from being scratched.
3 Turn o your computer.
CAUTION
network device.
4 Disconnect all the network cables from the computer.
5 Disconnect your computer and all attached devices from the electrical outlets.
6 Press and hold the power button while the computer is unplugged to ground the system board.
7 Remove the cover.
: To disconnect a network cable, rst unplug the cable from your computer and then unplug the cable from the
CAUTION
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.
: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as
Working on your computer7
CAUTION: Make sure that you place the cooler outlet side of your system at least 5 cm away from wall to prevent system
overheat.
CAUTION: Your system cannot be placed crosswise and make sure that there is no equipment on the side cover.
Turning o your computer
After working inside your computer
After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your
computer.
CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries
designed for other Dell computers.
1 Replace the battery.
2 Replace the base cover.
3 Connect any external devices, such as a port replicator or media base, and replace any cards, such as an ExpressCard.
4 Connect any telephone or network cables to your computer.
CAUTION: To connect a network cable, rst plug the cable into the network device and then plug it into the
computer.
5 Connect your computer and all attached devices to their electrical outlets.
6 Turn on your computer.
8
Working on your computer
Removing and installing components
This section provides detailed information on how to remove or install the components from your computer.
Screw size list
Table 1. Latitude 3390 2-in-1 screw size list
2
ComponentM2*3
Battery4
Power and volume buttons board1
WLAN card1
Power connector port1
SSD card1
System fan1
System board3
Keyboard shield14
Base cover9
Display hinges46
I/O board2
Touchpad and Touchpad bracket8
Keyboard15
Sensor board1
M2*2
(Big
head)
M2*2M2.5*5M2.5*7
M2.5*2.5
(Big head)
M2.5*L1.4M2*3.5
Base cover
Removing the base cover
1 Follow the procedure in Before working inside your computer.
2 Close the display and turn the laptop over.
3 Remove the M2.5 x 6 screws (9) that secure the base cover to the laptop.
Removing and installing components9
4 Using a plastic scribe, pry the base cover from the edges of the laptop chassis [1].
NOTE
: Pry the edges clockwise, starting from the lower left side of the air vent.
10Removing and installing components
5 Lift the base cover away from the laptop [2].
Installing the base cover
1 Align the edges of the base cover with the laptop and press until it clicks into place.
2 Tighten the screws to secure the base cover to the laptop.
3 Follow the procedure in After working inside your computer.
Battery
Removing the battery
1 Follow the procedure in Before working inside your computer.
2 Remove the base cover.
3 To remove the battery:
a Disconnect the battery cable from the connector on the system board [1].
NOTE: Ensure to pull the battery cable from the connector by the head of the connector label, to avoid damage to the
PIN.
b Remove the screws (4) that secure the battery to the laptop [2].
c Lift the battery away from the laptop [3].
Removing and installing components
11
Installing the battery
1 Insert the battery into the slot on the laptop.
2 Tighten the screws to secure the battery to the laptop.
3 Connect the battery cable to the connector on the system board
4 Install the base cover.
5 Follow the procedure in After working inside your computer.
Power and volume control board
Removing the power and volume control board
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
c coin cell battery
3 To remove the power and volume control board:
a Disconnect the power cable from the connector on the system board [1].
CAUTION
battery cable.
b Peel the adhesive tape [2].
c Release the volume control board cable from the routing clips .
d Remove the screw that secures the power and volume control board to the laptop [3].
e Lift the power and volume control board away from the laptop [4].
: Ensure that you remove the coin cell battery connector on the system board, to avoid damage to the
12
Removing and installing components
Installing the power and volume control board
1 Place the power and volume control board on the laptop chassis.
NOTE
: Place the power and volume control board into the two plastic placeholders which secures the board to the system
chassis.
2 Tighten the screw to secure the power and volume control board to the laptop.
3 Route the cables through the cable routing clips.
4 Connect the power and volume control board to the connector on the system board.
5 Ax the adhesive tape to secure it.
6 Install the:
a coin cell battery
b battery
c base cover
7 Follow the procedure in After working inside your computer.
Removing and installing components
13
Hard disk drive (HDD)
Removing the HDD
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the HDD:
a Disconnect the HHD cable from the connector on the system board [1].
NOTE: Ensure to pull the HDD cable by the plastic handle to avoid damage to the connector and cable.
b Release the cable adhesive tape that secures the cable to the system board.
c Remove the screw (2) that secures the HDD on the laptop system board [2].
d Lift the HDD from the system board [3].
Installing the HDD
1 Place the HDD on the hard disk placeholder.
2 Press the adhesive tape to secure the HDD cable.
3 Connect the HDD cable head to the connector on the system board.
4 Tighten the screw to secure the HDD to the laptop chassis.
5 Install the:
a battery
b base cover
6 Follow the procedure in After working inside your computer.
14
Removing and installing components
Coin cell battery
Removing the coin cell battery
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the coin cell battery:
a Disconnect the coin cell battery from the connector on the system board [1].
b Pry and lift the coin cell battery to release it from the adhesive on the laptop [2].
Installing the coin cell battery
1 Place the coin cell battery on the laptop.
2 Connect the coin cell battery cable to the connector on the system board.
3 Install the:
a battery
b base cover
4 Follow the procedure in After working inside your computer.
Removing and installing components
15
WLAN card
Removing the WLAN card
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove WLAN card:
a Remove the screw (1) that secures the WLAN card to the laptop [1].
b Lift the metal bracket to access the WLAN cables [2].
c Disconnect the WLAN cables from the connectors on the WLAN card [3].
NOTE: Ensure to gently use plastic scribe to disconnect the WLAN cables from the connectors.
d Slide the WLAN card away from the connector on the system board [4].
NOTE: Ensure to lift the WLAN card by an angle NOT more than 35°
16Removing and installing components
Installing the WLAN
1 Slide and connect the WLAN card to the connector on the system board.
2 Connect the WLAN cables to the connectors on the WLAN card.
3 Place the metal bracket to secure the WLAN cables.
4 Tighten the screw to secure the WLAN card to the laptop.
5 Install the:
a battery
b base cover
6 Follow the procedure in After working inside your computer.
Memory modules
Removing the memory module
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 Peel and hold the label that protects the memory module to the laptop.
4 To remove memory module:
a Pull the retention clips away from the memory module until the memory module pops out [1].
b Pull the memory module from the memory module socket on the system board [2].
: Ensure to lift the memory module card by an angle NOT more than 35°.
NOTE
Removing and installing components17
5 Repeat steps 3 and 4 to remove the second memory module (if available or shipped with the system).
Installing the memory module
: Install the second memory module with DRAM chips facing downward.
NOTE
1 Insert the memory module into the memory module socket until the retention clips secure the memory module.
NOTE
: Ensure to hear a click sound when the memory module is secured.
2 Ax the adhesive tape to secure the memory moduleRelease the label that protects the memory module.
3 Install the:
a battery
b base cover
4 Follow the procedure in After working inside your computer.
Speaker
Removing the speakers
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
18
Removing and installing components
c LED board
3 To remove speakers:
a Remove the mylar tape that secures the speaker cable on the system board [1].
NOTE: Lift the latch and release the LED board cable from the laptop, before un-routing the speaker cable.
b Disconnect the speaker cable from the connector on the system board [2].
c Release the speaker cables from the routing clips on the system board [3].
d Lift the speakers away from the laptop.
•
Removing and installing components
19
Installing the speakers
1 Insert the speakers into the slot on the laptop.
2 Route the speaker cable through the cable routing clips.
3 Paste the Mylar tape to secure the speaker cable on the system board.
4 Connect the speaker cable to the connector on the system board.
5 Install the:
a LED board
b battery
c base cover
6 Follow the procedure in After working inside your computer.
System fan
Removing the system fan
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the system fan:
a Disconnect the system fan cable from the connector on the system board [1].
b Remove the screws (2) that secure the system fan to the laptop [2].
c Lift the system fan away from the laptop [3].
20
Removing and installing components
Installing the system fan
1 Place the system fan on the laptop.
2 Tighten the screws to secure the system fan to the laptop.
3 Connect the system fan cable to the connector on the system board.
4 Install the:
a battery
b base cover
5 Follow the procedure in After working inside your computer.
Heat sink
Removing the heat sink
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the heat sink:
a Loosen the captive screws that secure the heat sink to the laptop[1] .
Removing and installing components
21
b Lift the heat sink away from the laptop [2].
NOTE: Ensure to loosen the screws diagonally. The screws cannot be removed completely as being retention screws.
Installing the heat sink
1 Place the heat sink on the system board.
2 Tighten the captive screws to secure the heat sink to the laptop.
NOTE
: Ensure to tighten the screws diagonally to evenly cover the processor. Start with a screw and proceed with
diagonally opposite screw, irrespective of which screw one starts with.
3 Install the:
a battery
b base cover
4 Follow the procedure in After working inside your computer.
LED board
Removing the LED board
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the LED board:
a Lift the latch and disconnect the LED board cable [1].
: Use a sharp tool or a plastic scribe to gently lift the latch.
NOTE
22Removing and installing components
b Release the LED board cable from the laptop [2].
NOTE: LED board cable is glued with a adhesive,ensure to peel gently to avoid damage.
c Peel the adhesive tape to access the LED board [3].
d Lift the LED board away from the laptop .
NOTE
: The LED board is secured on a cylindrical plastic hook. Ensure to lift the board without a damage to the LED
board hole, that secures it on the system board.
Removing and installing components23
Installing the LED board
1 Insert the LED board into the slot on the laptop.
NOTE
: Ensure to align the LED board hole to the cylindrical hook to secure the board on the system board.
2 Ax the adhesive tape to secure the LED board to the laptop.
3 Ax the LED board cable to the adhesive tape on the system board and connect the LED board cable to the connector.Release the
latch.
4 Install the:
a battery
b base cover
5 Follow the procedure in After working inside your computer.
Input/Output(I/O) boards
Removing the Input-Output board
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the I/O board:
a Peel and lift the plastic label of the I/O board cable [1].
b Pull the copper lever to disconnect the I/O board cable on the system board [2].
: Ensure to pull the copper lever by an angle 15° to 20°, to avoid damage to the connector copper pins.
NOTE
c Disconnect the coin cell battery and power and volume button board cables from the I/O board [3].
24
Removing and installing components
d Remove the screw (2) that secures the I/O board to the laptop chassis [1].
e Lift the I/O board from the laptop chassis [2].
Removing and installing components
25
Installing the Input-Output board
1 Place the I/O board on the laptop.
2 Tighten the screws to secure the I/O board to the laptop.
3 Connect the coin cell battery and power and volume button board cables to the connector on the I/O board.
4 Connect the I/O board cable to the connector on the system board.
5 Ax the adhesive tape to secure the I/O board cable and release the copper latch.
6 Install the:
a battery
b base cover
7 Follow the procedure in After working inside your computer.
26
Removing and installing components
Touchpad buttons board
Removing the touchpad
1 Follow the procedure in Before working inside your computer.
2 Remove the:
a base cover
b battery
3 To remove the touchpad metal bracket:
a Remove the mylar tapes that secures the speaker cable to the laptop [1].
b Remove the screws (4) that secure the touchpad board to the laptop chassis [2].
c Lift the touchpad metal bracket from the laptop chassis [3].
4 To release the touchpad:
a Remove the mylar tapes that secure the touchpad bracket to the laptop [1]
b Lift the latch and release touchpad cable on the system board [2].
c Pull the touchpad cable to release it from adhesive that secure the cable to the laptop.
Removing and installing components
27
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