Toshiba Satellite L755 Montageanleitung

How to disassemble Toshiba Satellite

L755, L755D, L750, L750D laptops

Today I'll show how to dismantle a Toshiba Satellite L755 laptop. I'll be taking

apart the laptop case and removing major internal components.

All dismantling steps should be the same for the following (identical) Toshiba

models:

- Toshiba Satellite L755D.

- Toshiba Satellite L750.

- Toshiba Satellite L750D.

Here are main laptop disassembly steps:

STEP 1- 5: Removing laptop hard drive and DVD drive. Accessing

memory modules, CMOS battery, wireless card.

STEP 6- 13: Disconnecting and removing laptop keyboard.

STEP 14-20: Removing top cover assembly.

STEP 21-27: Disconnecting and removing laptop motherboard.

STEP 28-29: Accessing the cooling fan and DC jack harness.

Step 30-44: Replace the laptop screen

STEP 1

Make sure the laptop is turned off before you

start dismantling it.

Unplug AC adapter. Unlock and remove laptop

battery.

STEP 2

Unscrew five screws securing the hard drive

cover and memory cover.

Lift up covers and remove them from the laptop.

www.battery-adapter.com

STEP 3

When both covers removed you can access the

laptop hard drive, CMOS battery, wireless card

and both memory modules.

It's not necessary to remove the wireless card

and memory modules for the purpose of my

guide. I'll leave them connected to the laptop.

Remove one screw securing the hard drive

mounting bracket to the laptop case.

STEP 4

Slide the hard drive assembly to the left to

disconnect it from the motherboard.

Lift up and remove the hard drive assembly.

Toshiba Satellite L755, L755D, L750, L750D

laptops have a regular 2.5" SATA hard drive

installed. If you are replacing the hard drive,

you'll have to transfer the mounting bracket to

the new drive.

STEP 5

Remove one screw securing the DVD optical

drive.

Pull the drive to the left to disconnect it from the

motherboard.

Remove DVD drive.

www.battery-adapter.com

STEP 6

Remove one screw located in the battery

compartment.

This screw securing the keyboard bezel.

STEP 7

Turn the laptop over and carefully lift up the

keyboard bezel with a small screwdriver.

Continue removing the bezel with your fingers.

You'll have to wiggle it a little bit in order to

separate from the laptop.

STEP 8

Remove four screws securing the keyboard.

STEP 9

After all four screws removed you should be

able to lift up the top side of the keyboard and

turn it upside down.

Place the keyboard on the palmrest. Be careful,

the keyboard still connected to the motherboard.

www.battery-adapter.com

STEP 10

It's necessary to unlock the connector and

release the cable before removing the keyboard.

In the following two steps I explain how to unlock

the connector.

STEP 11

The connector has two pieces:

1. The white base which is soldered to the

motherboard.

2. The brown locking tab - the moving part.

Carefully lift up the left side of the locking tab so

it opens up at a 90 degree angle.

STEP 12

Now you can pull cable from the connector.

STEP 13

Remove the keyboard.

www.battery-adapter.com

STEP 14

Remove shown screws from the bottom of the

laptop.

STEP 15

Don't forget two more screws in the DVD drive

bay.

STEP 16

Remove screws securing the top cover

assembly.

Disconnect the touchpad cable (1). Use same

technique as for disconnecting the touchpad

cable.

Disconnect the speaker cable (2).

STEP 17

The speaker cable has a regular male-female

type connector.

www.battery-adapter.com

STEP 18

Start separating the top cover assembly from

the laptop base using a piece of plastic (I'm

using the guitar pick).

Continue separating the top cover from the base

with your fingers.

STEP 19

Remove the top cover assembly.

STEP 20

On the bottom part of the top cover you can

access both speakers, touchpad and touchpad

button board.

STEP 21

After the top cover assembly removed you can

access the folloing internal laptop components:

- Power button board.

- DC jack.

- USB board.

- Motherboard.

www.battery-adapter.com

STEP 22

Remove three screws securing the motherboard

and cooling fan assembly.

Disconnect the USB board cable (1) and power

button board cable (2). Use same technique as

for disconnecting the keyboard cable.

STEP 23

Carefully unglue the protective film from the

laptop case.

STEP 24

In order to remove the motherboard it's

necessary to disconect the DC jack cable and

both wireless card antennas.

They are located under the memory cover which

we removed in the step 2.

STEP 25

Start removing the motherboard as it shown on

the picture.

www.battery-adapter.com

STEP 26

Remove motherboard from the laptop base.

STEP 27

On the bottom side of the motherboard you can

access the cooling fan assembly and CMOS

battery (on the left side from the wireless card).

STEP 28

In order to remove the cooling fan assembly (fan

and heatsink) you'll have to loosen four screws

and disconnect the fan cable.

After that carefully lift up the assembly and

separate it from the processor.

STEP 29

The DC jack is attached to the harness.

If the DC jack failed, you can remove the whole

harness and replace it with a new DC jack

harness.

How to replace screen on Toshiba Satellite L755, L755D, L750, L750D

www.battery-adapter.com

STEP 30

There are four screw covers on the screen

bezel. One cover in each bezel corner.

STEP 31

Remove all four covers with a sharp object.

Glue covers (they have sticky tape on the

bottom) somewhere on the bezel so they don't

get lost during the disassembly process.

STEP 32

Start separating the screen bezel from the

display back cover.

Here's how I do it:

- insert your fingers between the bezel and LCD

screen on the top of the display assembly.

- insert the guitar pick (you can use any other

piece os plastic) between the bezel and back

cover and slowly move it along the side.

- at the same time wiggle the bezel to unlock

hidden latches inside the display.

STEP 33

Continue separating the screen bezel from the

display assembly.

www.battery-adapter.com

STEP 34

It was kind of difficult to separate the bezel from

the display on the bottom.

Close the display and using the same guitar pick

separate the screen bezel from the display on

the bottom.

The picture shows the battery compartment area

of the laptop.

STEP 35

Now start separating the bezel from the display

hinges.

Insert a small flathead screwdriver under the

hinge cover (part of the screen bezel) and

carefully lift it up.

Do the same with the hinge cover on the left side

of the display.

STEP 36

Remove the screen bezel.

www.battery-adapter.com

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