Lenovo G50-45 model 80E3 disassembly

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Lenovo G50-45 model 80E3 disassembly.

In this tutorial I show how to disassemble a Lenovo G50-45 laptop (model 80E3).

At the end of this tutorial you will find a link to the official Lenovo G50-30/G50-45/G50-70/G50-70m/Z50-70/Z50-75/G50-80 hardware maintenance manual.

STEP 1.
Slide the lock #1 to the left to unlock the battery (red arrow).
Slide the lock #2 to the right to lift up the battery (you’ll have to apply some reasonable force).
Remove the battery.

Unlock the remove the battery.

STEP 2.
Remove three screws securing the bottom cover.
Slide the bottom cover to the shown direction and remove it from the laptop.

Remove the bottom cover.

STEP 3.
Remove four screws securing the hard drive bracket.
Slide the hard drive assembly to the left to disconnect it from the SATA port on the motherboard.

Remove hard drive screws and disconnect it from the motherboard.

STEP 4.
Lift up and remove the hard drive assembly.

Lift up and remove the hard drive assembly.

STEP 5.
Remove one screw securing the optical drive.
Pull the optical drive out.

Remove the optical drive.

STEP 6.
Remove three screws securing the cooling fan and disconnect fan cable from the motherboard.

Remove three screws securing the cooling fan and disconnect fan cable from the motherboard.

STEP 7.
Remove the fan.

NOTE: without removing the fan you will not be able to remove the palmrest. The fan is attached to the palmrest.

Remove the fan.

STEP 8.
Remove three screws securing the keyboard.

NOTE: just for the keyboard removal and replacement you can skip disassembly steps 3 through 7.

Remove three screws securing the keyboard.

STEP 9.
Using a thin case opener tool start separating the keyboard from the palmrest.
There are hidden latches securing the keyboard to the palmrest.

Using a thin case opener tool start separating the keyboard from the palmrest.

STEP 10.
Continue separating the keyboard as it shown on the following picture.

Continue separating the keyboard as it shown on the following picture.

STEP 11.
Move the keyboard towards the display assembly in order to access the keyboard cable connector underneath.
Unlock the keyboard cable and remove the keyboard.

Unlock the keyboard cable and remove the keyboard.

Here’s how to disconnect the cable.
1. Lift up the locking tab to unlock the connector (red arrow).
2. Pull the cable out.

Here's how to disconnect the cable.

STEP 12.
Disconnect the power button cable (color-coded in orange) and touchpad cable (color-coded in green). Use same technique as for disconnecting the keyboard cable.

Disconnect the power button cable and touchpad cable.

STEP 13.
Remove eight M2.5×6 screws (red) and one M2x6 screw (yellow).

Remove all screws from the base assembly.

STEP 14.
Start separating the palmrest from the base assembly.
You’ll have to apply some reasonable force to disengage hidden latches fastening two parts together.

Start separating the palmrest from the base assembly.

STEP 15.
Remove the palmrest assembly.

Remove the palmrest assembly.

On the other side of the palmrest you can access the touchpad and power button board.

On the other side of the palmrest you can access the touchpad and power button board.

STEP 16.
Unplug the DC power jack cable from the motherboard.

Unplug the DC power jack cable from the motherboard.

STEP 17.
Lift up the DC power jack and separate the DC jack harness from the guided path on the base.

Remove the DC power jack.

STEP 17.
Before removing the motherboard it’s necessary to unplug the display cable (color-coded in yellow) and disconnect Wi-Fi antenna cables from the card (color-coded in orange).

Unplug the display cable and Wi-Fi antenna cables.

In order to disconnect the Wi-Fi cable simply lift up the golden connector an an-snap it from the card.

In order to disconnect the Wi-Fi cable simply lift up the golden connector an an-snap it from the card.

STEP 18.
Remove three screws securing the motherboard.
Disconnect the CD/DVD board cable (orange), SD card reader USB Audio board cable (yellow) and speaker cable (green).

Remove three screws securing the motherboard and disconnect all cables.

STEP 19.
Lift up and remove the motherboard.

Lift up and remove the motherboard.

Here’s a photo of the base assembly with the motherboard removed.

Here's a photo of the base assembly with the motherboard removed.

For more help please refer to the official Lenovo G50-30/G50-45/G50-70/G50-70m/Z50-70/Z50-75/G50-80 hardware maintenance manual.



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