STEP 1

First of all turn off the laptop and unplug the AC adapter.

Unlock and remove the laptop battery.

STEP 2

Loosen two screws securing the memory cover and hard drive cover.

Lift up and remove both covers.

STEP 3

Under the memory cover you'll find two memory modules. I will leave both memory modules connected to the motherboard.

Toshiba Satellite L775, L775D, L770, L770D will take up to 8GB RAM total. You can install up to 4GB RAM module into each slot.

The CMOS battery also accessible under the memory cover. It's a regular coin battery. Model CR2032.

STEP 4

Remove one screw securing the DVD drive.

Pull the DVD drive to the left to disconnect it from the connector board.

Remove the DVD drive.

STEP 5

Slide the hard drive to the left to disconnect it from the motherboard.

Lift up and remove the hard drive.

Toshiba Satellite L775, L775D, L770, L770D laptop has a regular 2.5" SATA hard drive installed. It can be replaced with a larger capacity 2.5" SATA hard drive or SSD (solid state drive).

STEP 6

Carefully lift up the right side of the keyboard bezel with a small flat head screwdriver.

Continue removing the bezel with your fingers.

STEP 7

Remove four screws securing the keyboard on the top.

STEP 8

Carefully lift up the upper side of the keyboard and turn it upside down on the palmrest.

STEP 9

Now you can access the keyboard cable connector.

In order to release the cable you'll have to unlock the connector first.

In the following two steps I show how to unlock the connector and release the cable.

STEP 10

The keyboard connector has a white retainer.

You'll have to lift up the left side of the retainer with your fingernail. Do not apply much force. The retainer opens up at a 90 degree angle.

The retainer must remain attached to the connector base.

STEP 11

After the connector is unlocked you can pull the keyboard cable.

STEP 12

Remove the keyboard.

STEP 13

Remove all screws from the bottom of the laptop.

STEP 14

Remove four screws securing the palmrest assembly.

Disconnect the speaker cable (left arrow) and touchpad cable (right arrow).

STEP 15

You unlock the touchpad connector the same way you unlocked the keyboard connector in the step 12.

STEP 16

After the connect is unlocked you can pull the touchpad cable.

STEP 17

Unplug the speaker cable from the motherboard.

STEP 18

Now start separating the palmrest assembly from the laptop base.

I'm using the guitar pick for that. You can use a piece of soft plastic.

Insert the guitar pick between the palmrest assembly and bottom cover and move it along the side until latches are unlocked.

STEP 19

Continue removing the palmrest assembly with your fingers.

STEP 20

Remove the palmrest assembly.

STEP 21

On the other side of the palmrest assembly you can access both speakers and touchpad.

NOTE: the left and right button board is not a part of the touchpad. We'll be removing the button board later.

STEP 22

Here's the laptop with the palmrest assembly removed. Under the palmrest you can get access to the following internal components:
- DC power jack harness.
- Power button board.
- Cooling fan.
- Wireless card.
- DVD drive connector board.
- USB board.
- Touchpad button board.
- Motherboard.

STEP 23

In order to remove the display assembly you'll have to do the following:

1. Unplug the video cable from the motherboard. Unroute the cable.
2. Disconnect both antenna cables from the wireless card. Unroute both antennas.
3. Remove four screws securing the display hinges to the laptop bottom case.

STEP 24

After that you should be able to lift up and remove the display assembly.

In the next guide I'll explain how to remove and replace the LCD screen on a Toshiba Satellite L775, L775D, L770, L770D laptops.

STEP 25

The power button is located on a separate board.

In order to remove the power button board you'll have to disconnect the cable from the motherboard.

After that push on the plastic latch on the left and at the same time slide the board to the left.

STEP 26

In order to remove the cooling fan you'll have to remove two screw securing the fan and unplug the fan cable from the motherboard.

STEP 27

After that you should be able to lift up and remove the cooling fan from the laptop.

STEP 28

The DC power jack harness mounted in the upper left corner.

If the DC jack went bad, simply disconnect the failed harness and replace with a new DC jack harness.

STEP 29

As I mentioned before the touchpad button board is not a part of the touchpad.

In order to remove the touchpad button board you'll have to disconnect the cable from the motherboard and remove one screw.

STEP 30

The DVD drive connector board and USB board mounted in the lower right corner of the laptop.