기기를 수리하세요 커뮤니티 상점

Dell Latitude 7420 Keyboard Replacement

소개

If the keys of your keyboard are unresponsive or damaged, replacing the individual keys or the entire keyboard might be necessary.

This guide will lead you through replacing the keyboard of a Dell Latitude 7420.

Before starting, please ensure the device is turned off and disconnected from any adaptors or charging cables.

Likewise, use an anti-static band or mat when opening computers or handling components.

필요한 것

  1. Dell Latitude 7420 Keyboard Replacement, Back Case: 1 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement, Back Case: 1 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement, Back Case: 1 단계, 이미지 3/3

    • Remove the eight, 7 mm screws from the back case using a Phillips #0 screwdriver.

    • Use an opening pick or opening tool and work your way around the periphery of the base cover to separate it from the chassis.

    번역하기

  2. Dell Latitude 7420 Keyboard Replacement, Battery: 2 단계, 이미지 1/2 Dell Latitude 7420 Keyboard Replacement, Battery: 2 단계, 이미지 2/2

    • Be sure to use an anti-static band or mat from this point onward.

    • Using the Phillips #1 screwdriver, remove the five 5 mm screws securing the battery to the motherboard.

    번역하기

  3. Dell Latitude 7420 Keyboard Replacement: 3 단계, 이미지 1/2 Dell Latitude 7420 Keyboard Replacement: 3 단계, 이미지 2/2

    • Use a spudger to pry up each side. Then, lift the connector straight up from its socket.

    • To reinstall, carefully position the connector, and then press it straight down until it snaps into its socket. Finger pressure is all that is required. If it won't snap home it'll be because it isn't correctly positioned. Sometimes it can take a little patience to find exactly the right position.

    번역하기

  4. Dell Latitude 7420 Keyboard Replacement: 4 단계, 이미지 1/1

    • Gently remove the battery from its housing.

    번역하기

  5. Dell Latitude 7420 Keyboard Replacement, SSD: 5 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement, SSD: 5 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement, SSD: 5 단계, 이미지 3/3

    • Use a Phillips #00 screwdriver to remove the two 2.0 mm screws holding down the SSD cover.

    • Remove the SSD cover.

    • Notice that the left screw is also pinning the SSD card in place.

    번역하기

  6. Dell Latitude 7420 Keyboard Replacement: 6 단계, 이미지 1/1

    • Pull the SSD card by its left edge to slide it out of the socket.

    번역하기

  8. Dell Latitude 7420 Keyboard Replacement, Fan Assembly: 7 단계, 이미지 1/2 Dell Latitude 7420 Keyboard Replacement, Fan Assembly: 7 단계, 이미지 2/2
    이 단계에 사용된 도구:
    Dust Blower
    $4.99
    구매

    • Keeping the vents on the case of the laptop clean of dust or debris and clear of obstruction is important for the device to maintain its temperature.

    • Use a cloth and dust blower to clean the vents.

    • It's best to clean the vent when the back case has been removed from the device.

    번역하기

  9. Dell Latitude 7420 Keyboard Replacement: 8 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 8 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 8 단계, 이미지 3/3

    • If the fan is dusty, a soft cloth can be used to gently clean it.

    • Use a Phillips #00 screwdriver to remove the six 2.5 mm screws securing the fan assembly.

    번역하기

  10. Dell Latitude 7420 Keyboard Replacement: 9 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 9 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 9 단계, 이미지 3/3

    • Use the pointed tip of a spudger to carefully push on each side of the connector and remove it from the socket.

    • Remove the fan assembly.

    • When replacing the fan assembly, make sure there is thermal paste under the heat sink. Follow this guide for more information.

    번역하기

  11. Dell Latitude 7420 Keyboard Replacement, Keyboard: 10 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement, Keyboard: 10 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement, Keyboard: 10 단계, 이미지 3/3

    • Use a Phillips #00 screwdriver to remove the single 2.5 mm screw from the audio board.

    • Use a spudger or your fingernail to flip the black cover open.

    • Slide the ribbon cable out from the ZIF connector.

    • Remove the audio board.

    번역하기

  12. Dell Latitude 7420 Keyboard Replacement: 11 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 11 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 11 단계, 이미지 3/3

    • Use a Phillips #00 screwdriver to remove the screws securing the motherboard to the device.

    번역하기

  13. Dell Latitude 7420 Keyboard Replacement: 12 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 12 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 12 단계, 이미지 3/3

    • Remove the connectors to the system board.

    • Place the tip of your opening tool under the edge of the connector, and pry the connector straight up from its socket.

    • Use the tip of a spudger or your fingernail to flip up the small locking flaps from these ZIF connectors. Then, you can safely pull the cables out.

    • Slide a thin, ESD-safe pry tool or tweezers under the wire until it's snug against the connector, and pry straight up from the board to disconnect these coaxial cables.

    • To remove the blue connector, pull the cable away from the connector in the same direction that the individual wires are running.

    • Pull evenly on the full width of the cable so that no individual wires are overly strained.

    • Lift the final connector up from the socket.

    번역하기

  14. Dell Latitude 7420 Keyboard Replacement: 13 단계, 이미지 1/1

    • Remove the motherboard.

    번역하기

  15. Dell Latitude 7420 Keyboard Replacement: 14 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 14 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 14 단계, 이미지 3/3

    • Use a Phillips #00 screwdriver to remove two 4.0 mm screws from the I/O board.

    • Remove the I/O board from the device.

    번역하기

  16. Dell Latitude 7420 Keyboard Replacement: 15 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 15 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 15 단계, 이미지 3/3

    • Use a Phillips #00 screwdriver to remove the twenty 1.7 mm screws securing the keyboard.

    번역하기

  17. Dell Latitude 7420 Keyboard Replacement: 16 단계, 이미지 1/3 Dell Latitude 7420 Keyboard Replacement: 16 단계, 이미지 2/3 Dell Latitude 7420 Keyboard Replacement: 16 단계, 이미지 3/3

    • Use the tip of a spudger or your fingernail to flip up the small locking flap on the remaining cables. Then, you can safely pull them out.

    • Pull the keyboard out from the chassis.

    번역하기
결론

To reassemble your device, follow these instructions in reverse order.

다른 한 분이 해당 안내서를 완성하였습니다.

작성자

다른 기여자 2명과 함께

Nick B.

회원 가입일: 08/25/22

563 평판

안내서 4개 작성하였습니다

배지: 11

배지 +8개 더

팀

Gateway, Team 1-2, Pee Spring 2023 Gateway, Team 1-2, Pee Spring 2023 회원

GCC-PEE-S23S1G2

4 회원들

안내서 6개 작성하였습니다

댓글 0개

댓글 쓰기

조회 통계:

24 시간 전: 2

7일 전: 12

30일 전: 65

전체 시간: 822