When your Dell Latitude 7490 laptop computer begins appearing up, it may be irritating. However earlier than you quit and take it to an expert, there are some things you’ll be able to attempt to repair it your self. One widespread problem is a defective battery, which could be simply changed. One other widespread problem is a clogged fan, which could be cleaned with a can of compressed air. In the event you’re feeling just a little extra adventurous, you’ll be able to even attempt to change the onerous drive or the RAM.
On this article, we’ll present you tips on how to take aside your Dell Latitude 7490 laptop computer as a way to carry out these repairs your self. We’ll present step-by-step directions with clear pictures, in order that even novices can comply with alongside.
Earlier than you start, be certain that to energy down your laptop computer and unplug it from any energy sources. You also needs to take away any exterior gadgets, akin to a USB drive or a mouse. As soon as you have achieved that, you are prepared to begin taking aside your laptop computer.
Important Instruments and Precautions
Earlier than embarking on the disassembly of your Dell Latitude 7490, it’s essential to collect the suitable instruments and observe essential precautions to make sure a profitable and protected process. This is a complete listing of what you will want and the precautions to take:
Important Instruments:
To disassemble the Dell Latitude 7490, you’ll require the next instruments:
| Important Instruments |
|---|
| Anti-static wrist strap |
| Precision screwdriver set (Phillips #00 and Torx T5) |
| Plastic spudger or pry instrument |
| Tweezers |
| Magnetic mat or tray |
| ESD (Electrostatic Discharge) bag (non-obligatory) |
Precautions:
To attenuate the danger of injury to your laptop computer or harm to your self, please adhere to the next precautions:
- Floor your self: Put on an anti-static wrist strap or contact a grounded steel object earlier than dealing with the laptop computer to stop electrostatic discharge (ESD).
- Energy down and disconnect: Be certain that your laptop computer is turned off and all cables are disconnected earlier than beginning disassembly.
- Work on a clear, flat floor: Select a well-lit and clutter-free workspace to keep away from unintended spills or lack of small elements.
- Keep away from extreme drive: Use mild drive when eradicating elements to stop harm. In the event you encounter resistance, reassess the scenario and establish the trigger.
- Preserve monitor of screws: Place screws in a magnetic mat or tray and maintain monitor of their authentic places to make sure correct reassembly.
Getting ready the Laptop computer
Earlier than commencing the disassembly course of, make sure the laptop computer is powered down and all exterior peripherals are disconnected. Place the laptop computer the wrong way up on a clear and secure floor. Find the six screws securing the bottom cowl and take away them utilizing a Phillips #00 screwdriver.
Lifting the Base Cowl
As soon as the screws are eliminated, fastidiously raise the bottom cowl by inserting a plastic pry instrument or your fingernails into the seam alongside the sting. Use warning to keep away from damaging the plastic clips holding the duvet in place. Gently raise the duvet till it’s fully separated from the laptop computer chassis.
Warning: Deal with the bottom cowl with care to stop harm to the inner elements, such because the battery or cooling fan.
Be aware: The bottom cowl might comprise extra tabs or clips that require mild maneuvering to launch. Use a plastic pry instrument to soundly disengage any remaining clips.
Eradicating Exterior Parts
Earlier than disassembling the inner elements of the Dell Latitude 7490, it’s essential to take away all exterior elements to make sure security and stop harm.
Step 1: Detach the Energy Twine
Find the facility twine linked to the laptop computer and gently unplug it from the facility supply. At all times maintain the plug, not the twine, to keep away from damaging the wires.
Step 2: Take away the Battery
Slide the battery launch latch positioned on the underside of the laptop computer. Maintain the battery firmly and slide it out of its compartment.
Step 3: Take away the SIM Card and microSD Card (if relevant)
- Find the SIM card slot on the aspect of the laptop computer and insert a SIM ejector instrument (or a paperclip). Press down gently to eject the SIM card.
- If the laptop computer has a microSD card slot, insert a microSD card ejector instrument (or a paperclip) and press down gently to eject the microSD card.
| Element | Location | Elimination Methodology |
|---|---|---|
| Energy Twine | Again of laptop computer | Unplug from energy supply |
| Battery | Backside of laptop computer | Slide launch latch and slide out battery |
| SIM Card | Facet of laptop computer | Insert SIM ejector instrument and press down |
| microSD Card (if relevant) | Facet of laptop computer | Insert microSD card ejector instrument and press down |
Eradicating the Keyboard
To start, you will must take away the again cowl of the laptop computer. That is achieved by eradicating the screws that maintain it in place. As soon as the again cowl is eliminated, you will must disconnect the battery after which take away the speaker meeting.
With the speaker meeting eliminated, you will have entry to the screws that maintain the keyboard in place. Take away these screws after which fastidiously raise the keyboard out of the laptop computer.
Be Light with the Keyboard Ribbon Cable
| Step 1: Uncover the Ribbon Cable | Find the ribbon cable connecting the keyboard to the motherboard. It is normally coated by a small plastic protecting cowl. Use a pry instrument to softly raise the duvet and expose the ribbon cable. |
|---|---|
| Step 2: Disconnect the Ribbon Cable | Flip the small lever on the finish of the ribbon cable’s connector. This lever secures the cable in place. As soon as the lever is flipped, gently pull the cable out of the connector. |
| Step 3: Maneuver the Keyboard | With the ribbon cable disconnected, now you can fastidiously raise the keyboard out of the laptop computer body. Maneuver it gently to keep away from damaging the encircling elements or the ribbon cable. |
Detaching the Battery
To detach the battery from the Dell Latitude 7490, comply with these steps:
1. Be certain that the laptop computer is powered off and all cables are disconnected.
2. Slide the battery launch latches positioned on the underside of the laptop computer in direction of the middle.
3. Carry the battery barely from the again of the laptop computer.
4. Slide the battery out of the compartment at an angle.
5. Disconnect the Battery Cable:
Earlier than fully eradicating the battery, you will need to disconnect the battery cable to stop any harm to the motherboard or the battery.
To disconnect the battery cable, comply with these extra steps:
- Find the battery cable connector on the proper aspect of the battery compartment.
-
Utilizing a pair of tweezers or your fingers, fastidiously pry open the connector latch and pull the
battery cable free from the connector.
Warning: Deal with the battery cable with care to keep away from damaging the fragile wires.
6. As soon as the battery cable is disconnected, you’ll be able to fully take away the battery from the laptop computer.
Dismantling the High Bezel
1. Take away the rubber ft
Use a spudger to pry up the rubber ft on the underside of the laptop computer. There are six ft in complete.
2. Take away the screws beneath the ft
There are six screws beneath the rubber ft. Take away them utilizing a T5 Torx screwdriver.
3. Pry up the underside bezel
Use a spudger to pry up the underside bezel, ranging from the again of the laptop computer. Work your approach across the edges till the bezel is unfastened.
4. Carry the underside bezel away
As soon as the bezel is unfastened, raise it away from the laptop computer. Watch out to not harm the wires connecting it to the motherboard.
5. Disconnect the webcam cable
Use a spudger to disconnect the webcam cable from the motherboard. The cable is positioned on the proper aspect of the laptop computer.
6. Pry up the highest bezel
Use a spudger to pry up the highest bezel, ranging from the again of the laptop computer. Work your approach across the edges till the bezel is unfastened.
| Screw Measurement | Amount | Location |
| M2x3 | 2 | Rear corners of the highest bezel |
| M2x4 | 6 | Alongside the edges and high of the highest bezel |
| M2x5 | 2 | Close to the entrance corners of the highest bezel |
7. Carry the highest bezel away
As soon as the bezel is unfastened, raise it away from the laptop computer. Watch out to not harm the wires connecting it to the motherboard.
Eradicating the Motherboard Meeting
To take away the motherboard meeting, comply with these steps:
-
Disconnect the battery cable from the motherboard.
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Take away the 2 screws that safe the motherboard meeting to the system board.
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Disconnect the next cables from the motherboard:
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Energy cable
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Show cable
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USB cables
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Audio cable
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Digital camera cable
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Keyboard cable
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Touchpad cable
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Fan cable
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Speaker cable
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Microphone cable
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Carry the motherboard meeting out of the system board.
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Place the motherboard meeting on a clear, flat floor.
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Take away the next screws from the motherboard meeting:
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Two screws that safe the battery connector
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Two screws that safe the speaker
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Two screws that safe the fan
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Two screws that safe the microphone
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Two screws that safe the keyboard
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Two screws that safe the touchpad
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Two screws that safe the show
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Two screws that safe the facility swap
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Two screws that safe the USB ports
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Two screws that safe the audio ports
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Two screws that safe the digicam
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Fastidiously take away the next elements from the motherboard meeting:
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Battery connector
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Speaker
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Fan
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Microphone
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Keyboard
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Touchpad
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Show
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Energy swap
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USB ports
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Audio ports
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Digital camera
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Place the eliminated elements in a protected place.
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The motherboard meeting is now eliminated.
| Screw Measurement | Amount |
|---|---|
| M2x3mm | 10 |
| M2x4mm | 6 |
| M2x5mm | 4 |
Unplugging and Eradicating Cables
Battery Elimination
Earlier than you start disassembling your Dell Latitude 7490, it is important to unplug and take away all cables. Disconnect the AC adapter and every other cables linked to the laptop computer.
Keyboard Elimination
To take away the keyboard, first, find the screws securing it to the chassis. Normally, there are two screws on the underside of the laptop computer. As soon as the screws are eliminated, fastidiously raise the keyboard upward to launch it from the chassis.
Touchpad Elimination
To take away the touchpad, you will must detach the battery first. Then, find the 2 screws securing the touchpad to the chassis. Take away the screws and gently raise the touchpad to launch it.
Show Elimination
Eradicating the show is a little more concerned. First, you will must take away the highest cowl of the laptop computer. As soon as the highest cowl is eliminated, you’ll be able to entry the show meeting. Find the screws securing the show to the chassis and take away them. Fastidiously raise the show to launch it.
Backside Cowl Elimination
To take away the underside cowl, first, take away the screws securing it to the chassis. Then, gently raise the underside cowl to launch it.
Motherboard Elimination
To take away the motherboard, you will must disconnect all cables and connectors connected to it. As soon as the cables are disconnected, find the screws securing the motherboard to the chassis and take away them. Fastidiously raise the motherboard to launch it.
Cooling Fan Elimination
To take away the cooling fan, you will must find the screws securing it to the chassis. As soon as the screws are eliminated, fastidiously raise the cooling fan to launch it.
Reminiscence Elimination
To take away the reminiscence modules, find the clamps securing them to the motherboard. Gently push the clamps outward to launch the reminiscence modules. Then, fastidiously pull the reminiscence modules out of their slots.
Cable Disconnection
After eradicating the mandatory elements, you will must disconnect all cables and connectors connected to the laptop computer. This contains the facility cable, show cable, touchpad cable, and every other cables linked to the motherboard.
| Cable | Location |
|---|---|
| Energy Cable | Linked to the motherboard |
| Show Cable | Linked to the show meeting |
| Touchpad Cable | Linked to the touchpad |
| Different Cables | Varies relying on the precise laptop computer mannequin |
Accessing Inside Parts
1. Put together the Workspace
* Guarantee a clear, well-lit, and anti-static work setting.
2. Take away the Battery
* Find the battery launch latch on the underside of the system.
* Slide the latch to launch the battery and raise it out.
3. Take away the Again Cowl
* Establish the screws securing the again cowl (usually 9 screws).
* Use a Phillips #0 screwdriver to unscrew them.
* Fastidiously raise the again cowl off the system.
4. Disconnect the Show Cable
* Use a plastic spudger to softly pry up the show cable connector.
* Pull the cable straight as much as disconnect it.
5. Take away the Show
* Carry the show meeting up and away from the system.
6. Disconnect the Battery Cable
* Find the battery cable connector on the motherboard.
* Use a plastic spudger to pry up the connector.
* Pull the cable straight as much as disconnect it.
7. Take away the Warmth Sink
* Unscrew the screws holding the warmth sink in place (usually 4 screws).
* Fastidiously raise the warmth sink off the motherboard.
8. Take away the Motherboard
* Unscrew the screws holding the motherboard in place (usually 10 screws).
* Gently raise the motherboard out of the system.
9. Accessing the Fan and Cooling System
* The fan and cooling system could be accessed by eradicating the next elements:
* Warmth sink
* Energy button board
* Speaker module
* Keyboard
| Element | To Take away |
|---|---|
| Warmth sink | Unscrew the screws holding it in place and raise it off. |
| Energy button board | Disconnect the cable and take away the screws holding it in place. |
| Speaker module | Disconnect the cables and take away the screws holding it in place. |
| Keyboard | Disconnect the cable and take away the screws holding it in place. |
Reassembling the Dell Latitude 7490
After you have reattached the battery, you’ll be able to start reassembling the Dell Latitude 7490.
Begin by aligning the underside case with the highest case.
- Be sure that the hinges are lined up correctly.
- Press down on the underside case till it snaps into place.
Subsequent, reattach the screws that you simply faraway from the underside case.
- Use a Phillips #00 screwdriver to tighten the screws.
- Be sure that the screws are tightened securely, however don’t overtighten them.
Lastly, reattach the show meeting to the underside case.
- Align the show meeting with the underside case.
- Press down on the show meeting till it snaps into place.
Listed here are some extra ideas for reassembling the Dell Latitude 7490:
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| After you have reassembled the Dell Latitude 7490, you’ll be able to energy it on and take a look at it to be sure that it’s working correctly. |
How To Take Aside Dell Letitude 7490
To take aside a Dell Latitude 7490, you have to the next instruments:
- A Phillips #0 screwdriver
- A Torx T5 screwdriver
- A plastic spudger
After you have gathered your instruments, comply with these steps:
- Take away the six screws on the underside of the laptop computer utilizing the Phillips #0 screwdriver.
- Pry off the underside cowl utilizing the plastic spudger.
- Disconnect the battery cable by gently pulling it straight up from the motherboard.
- Take away the 4 screws that safe the heatsink to the motherboard utilizing the Torx T5 screwdriver.
- Carry the heatsink off of the motherboard.
- Disconnect the fan cable from the motherboard.
- Take away the 2 screws that safe the fan to the heatsink utilizing the Phillips #0 screwdriver.
- Carry the fan off of the heatsink.
- Take away the 4 screws that safe the motherboard to the chassis utilizing the Torx T5 screwdriver.
- Carry the motherboard out of the chassis.
Folks Additionally Ask
How do I take away the keyboard from a Dell Latitude 7490?
To take away the keyboard from a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the highest of the keyboard
- Three screws on the underside of the keyboard
After you have eliminated the screws, you’ll be able to raise the keyboard up and away from the laptop computer.
How do I change the battery in a Dell Latitude 7490?
To interchange the battery in a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the underside of the laptop computer
After you have eliminated the screws, you’ll be able to raise the battery out of the laptop computer.
How do I improve the RAM in a Dell Latitude 7490?
To improve the RAM in a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the underside of the laptop computer
- One screw on the highest of the laptop computer
After you have eliminated the screws, you’ll be able to raise the duvet off of the laptop computer and entry the RAM slots.
