Fujitsu LIFEBOOK U7411 Benutzerhandbuch

Page 1 of 49

System upgrades and repairs 2

Information on the installation and removal of components 3

Screws 4

Tools 5

Switching off the battery 6

Removing the SIM card cover 7

Inserting the SIM card cover 8

Mandatory Support Bulletins for Disassembly 9

Removing the lower assy 10

Removing the battery 11

Removing the white protective film 12

Removing the memory 13

Removing the M.2 module 14

Removing the LTE module 15

Removing the WLAN module 17

Removing the speaker 18

Removing the Touchpad buttons sub board 19

Removing the touchpad buttons 20

Removing the fan 21

Removing the heatsink 22

Fingerprint sensor incl. SecureBio sub board 23

Removing the CMOS battery 24

Removing the TPM module 25

Removing the keyboard 26

Inserting the red plastic strip of the keyboard 28

Removing the mainboard 29

Removing the upper assy of the case 30

Removing the LCD assy 32

Removing the LCD hinge covers 33

Removing the LCD back cover assy 34

Removing the LCD hinges 36

Removing the LCD panel 37

LIFEBOOK U7411 replacement parts and exploded-view drawings 39

Disposal information for recycling companies 48

System upgrades and repairs

LIFEBOOK U7411

Version date

19.03.2021

Category

System upgrades and repairs

Contents

Page 2 of 49

System upgrades and repairs

We recommend printing out the relevant sections of this chapter prior to installation

as the device for installing/removing hardware components needs to be switched

off.

The following illustrations may differ from your device, depending on its configuration and features.

If you have received any further documents with your device, you should read these through carefully.

Please note the following instructions before installing/removing system components:

■The device must be switched off when installing/removing components and it

must not be in power-saving mode.

■Disconnect the mains plug before opening the device.

■After unplugging the mains plug, discharge the remaining voltage by pressing

the activation button.

■Remove all externally connected cables.

■Take care not to pinch any cables when installing/removing components.

■Please ensure that the installed components that might heat up intensely

during operation do not exceed the permitted operating temperature.

Please take note of the target audience addressed in this manual. Damage to the device incurred as a result of unqualified

methods used during repair work as well as the use of unsuitable spare parts or assemblies during the repair work, or

upgrades of the device may void your warranty claim.

During a system expansion or a hardware upgrade, it is possible that the

BIOS must be updated. You can find more information in the technical

information provided for your device.

Page 3 of 49

Information on the installation and removal of components

Please pay attention to the locking mechanism (indentations and centring pins) when installing hardware components.

Note that some components on the mainboard may be very hot if the device was in use shortly before the case was removed.

Utmost care is required during installation and removal to avoid damaging components.

Never use items with sharp edges (screwdrivers) to lever them out.

Parts with Electrostatic Sensitive Devices (ESD) can be identified by a corresponding label.

When dealing with boards with ESDs, the following points must always be observed:

■Always ensure there is a static discharge (e.g. by touching a grounded object)

prior to commencing with the work.

■The devices and tools being used must not be statically charged.

■Only touch the components along the edges or on the areas marked in green (contact points).

■Contacts and electronic components must not touch when handling components

equipped with ESD protection.

Page 4 of 49

Screws

Screw: M2.5XL3 (D4.5)

Screwdriver: Phillips PH00

Screw: M2.5XL4

Screwdriver: Phillips PH00

Screw: M2.5XL6 (D4.5)

Screwdriver: Phillips PH00

Screw: M2XL2.5

Screwdriver: Phillips PH00

Screw: M3XL3.5-1

Screwdriver: Phillips PH00

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Page 5 of 49

Tools

Screwdriver: Phillips PH00

Plastic tool

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Page 6 of 49

Switching off the battery

►Disconnect the mains plug from the mains outlet.

►Remove all cables connected to the Notebook.

►Close the LCD display by closing the notebook.

►Turn your notebook over and place it on a stable and flat surface. If necessary, lay an anti-slip cloth on this surface to prevent

the notebook from being scratched.

►Push a pen or piece of wire (e.g. a paper clip) into the opening of the battery reset button (yellow arrow) to disconnect the

battery from the system.

Warning!

The battery can be disconnected by pushing the battery reset button located on the bottom of the device.

As soon as an AC adapter is connected to the device, the battery is ready for operation.

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Page 7 of 49

Removing the SIM card cover

►The slot for the SIM card is located at the back of the device (see green frame).

Figure 1 Figure 2 Figure 3

►Open the SIM card cover (Figure 1). The SIM card cover is embedded in the device.

►Carefully pull the SIM card cover out of the opening with your thumb and index finger until it can be removed completely

(Figure 2).

►The SIM card cover can now be removed (Figure 3).

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Page 8 of 49

Inserting the SIM card cover

►The slot for the SIM card is located at the back of the device (see green frame).

Figure 1 Figure 2 Figure 3

►The SIM card cover is provided with a bracket (yellow arrow) that is fed into the device and embedded there

(Figure 1).

►Slide the SIM card cover bracket into the SIM tray opening (green arrow, Figure 2).

►Check that the SIM card cover is correctly seated by pulling the cover forward out of the device. The SIM card cover is

correctly inserted if it cannot simply be pulled completely out of the device but remains in the device due to being embedded

(Figure 3).

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Page 9 of 49

Mandatory Support Bulletins for Disassembly

SB-M-10030

Minimum requirements to properly finalise hardware repairs on mobile systems

SB-M-15007

WIN8x & WIN10 - Spare product key for repaired devices

For any information about ESD, please refer to the web-based training course “ESD in

electronics“

Page 10 of 49

Only intended for authorised service technicians

Removing the lower assy

Required work steps:

■Switching off the battery

Required tools:

■Screwdriver: Phillips PH00

►First, remove all cards or plastic dummies (e.g. SIM card, SD card, etc.).

►Disconnect the mains plug from the mains outlet.

►Disconnect all the cables that are connected to the notebook.

►Turn your notebook over and place it on a stable and flat surface. If necessary, place a non-slip cloth on the surface to

avoid scratching the notebook.

►Remove the thirteen screws (yellow circles). Please note that the screws are not removed from the housing, but remain on

the lower assy.

►Lift the lower assy from the device as shown by the green arrows.

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