In this disassembly guide I’m taking apart a 14″ Lenovo Flex 3-1470 laptop (model 80JK).
I’ll be removing all main internal components and the display assembly.
Remove ten screw securing the base cover.
Remove the base cover.
Insert a thin case opener tool between the base cover and palmrest assembly and pry it up. You’ll have to release hidden latches attaching the base cover to the palmrest.
In order to remove the battery it’s necessary to remove the I/O USB/Audio/Volume control board cable.
Disconnect the I/O cable on both sides.
In order to pull the cable out it’s necessary to unlock the connector.
Unlock the connector by lifting up the locking tab (red arrow). After that you can pull the cable out (yellow arrow).
Remove the I/O board cable.
Remove two screw securing the main laptop battery.
Lift up the battery and unplug the battery cable from the motherboard.
Lenovo Flex 3-1470 laptop battery model: L14M3P21.
Replacement batteries available here: https://ebay.to/2VRzixY
Remove three screws attaching the hard drive mounting bracket to the palmrest.
Slide the hard drive assemble to the shown direction (red arrow) to disconnect it from the SATE port.
Remove the hard drive assembly.
If you need to access the memory module, you will find it under the black mylar cover. The cover is attached to the motherboard by adhesive tape.
Lenovo Flex 3-1470 motherboard has only one removable memory module.
By the way, the CMOS battery also can be easily accesses and replaced if necessary.
Remove three screws from the left display hinge.
Unplug the DC jack power cable from the motherboard.
The DC power jack mounted under the left display hinge. In order to access the DC jack it’s necessary to open the hinge as it shown on the following picture.
Now you can remove the DC power jack harness.
Replacement DC jacks available here: https://ebay.to/2TnCuA1
Remove the USB/Audio/Volume control board.
Replacement USB boards available here: https://ebay.to/3cyTD0Y
Disconnect two antenna cables from the wireless card.
Remove one screw securing the wireless card.
Remove the wireless card.
Remove three screws from the right display hinge and disconnect the display video cable from the motherboard.
Unlock the display connector first (red arrow) and pull the video cable out (yellow arrow).
Open the right display hinge.
Unplug the webcam cable from the motherboard.
Unroute all cables from the guided path on the side of the cooling fan.
After both display hinges opened up and cables disconnected and unrouted, you can separate the palmrest assembly from the display.
Remove two screws attaching the motherboard to the palmrest.
Notice that these screws are different.
Disconnect the following color-coded cables from the motherboard:
– Speaker cable (orange).
– Keyboard backlight cable (yellow).
– Keyboard cable (green).
– Touchpad cable (light blue).
Remove the motherboard.
Here’s a picture of the other side just in case you need it.
Replacement motherboards available here: https://ebay.to/2xbebg0
In Lenovo Flex 3-1470 laptop the keyboard is permanently riveted to the palmrest and cannot be easily removed and replaced.
The touchpad secured to the palmrest by two screws and it is removable.
Replacement palmrest assemblies or keyboards available here: https://ebay.to/39kp6Ca
Related post: How to disassemble Lenovo ideapad Flex 5-1470 laptop.