XO 1.5 USB Keyboard: Difference between revisions
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|Test the new USB keyboard by plugging it into the XO and typing on it. |
|Test the new USB keyboard by plugging it into the XO and typing on it. |
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|[[Image:XO1.5_USBKB_Photo1.jpg|thumb|Screw locations in USB keyboard]] |
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|[[Image:XO1.5_USBKB_Photo2.jpg|thumb|left|USB keyboard and its KBC]] |
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|Open up the USB keyboard. |
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|Separate the keyboard controller (KBC) from the keyboard by gently pulling on the FPC. |
|Separate the keyboard controller (KBC) from the keyboard by gently pulling on the FPC. |
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|[[Image:XO1.5_USBKB_Photo2A.jpg|thumb|USB keyboard and its KBC]] |
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|[[Image:XO1.5_USBKB_Photo3.jpg|400px|Top of USB KBC]] |
|[[Image:XO1.5_USBKB_Photo3.jpg|400px|Top of USB KBC]] |
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|Remove (unsolder) the LEDs and the crystal. |
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|Clip the pins on the board bottom. |
|Clip the pins on the board bottom. |
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|[[Image:XO1.5_USBKB_Photo4.jpg|thumb|Bottom of USB KBC]] |
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|Move the crystal to the edge of the board, extending its leads with 28ga solid wire. Be careful that you don't pull the pads off the PCB and break the traces. The copper plating is very thin! |
|Move the crystal to the edge of the board, extending its leads with 28ga solid wire. Be careful that you don't pull the pads off the PCB and break the traces. The copper plating is very thin! |
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|[[Image:XO1.5_USBKB_Photo5.jpg|thumb|Crystal after moving]] |
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|[[Image:XO1.5_USBKB_Photo6.jpg|thumb|left|Modified USB KBC board]] |
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|Insulate the crystal using cellulose or polymide tape, to prevent its case from shorting, or being shorted to, other circuits in the area. Remove the stress relief and first 25cm of insulation |
|Insulate the crystal using cellulose or polymide tape, to prevent its case from shorting, or being shorted to, other circuits in the area. Remove the stress relief and first 25cm of insulation from the USB cable. Leave the USB A end on cable for testing, for now. |
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|Remove the plastic tabs at the top of the keyboard. |
|Remove the plastic tabs at the top of the keyboard. |
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|[[Image:XO1.5_USBKB_Photo7.jpg|thumb|Keyboard tabs]] |
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|Reattach the keyboard to the USB KBC, and retest for full functionality. |
|Reattach the keyboard to the USB KBC, and retest for full functionality. |
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[[Image:XO1.5_USBKB_Photo10.jpg|thumb|Upper base assembly disassembly]] |
[[Image:XO1.5_USBKB_Photo10.jpg|thumb|Upper base assembly disassembly]] |
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|Remove the keyboard and XO KBC board. |
|Remove the keyboard and XO KBC board. |
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|[[Image:XO1.5_USBKB_Photo11.jpg|thumb|Keyboard Controller (w. foam)]] |
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|[[Image:XO1.5_USBKB_Photo12.jpg|400px|Base Assembly Components]] |
|[[Image:XO1.5_USBKB_Photo12.jpg|400px|Base Assembly Components]] |
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|Remove the waterproofing foam and rubber covering from the KBC controller. Save the rubber. |
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[[Image:XO1.5_USBKB_Photo11A.jpg|thumb|Keyboard Controller PCB]] |
[[Image:XO1.5_USBKB_Photo11A.jpg|thumb|Keyboard Controller PCB]] |
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|Remove the spacing flanges from the side bumpers |
|Remove the spacing flanges from the side bumpers |
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|[[Image:XO1.5_USBKB_Photo20.jpg|400px|Side bumper flanges]] |
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<photo of the side bumpers with the flanges> |
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<photo of the side bumpers after removing the flanges> |
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|[[Image:XO1.5_USBKB_Photo21.jpg|400px|left|Side bumper flanges removed]] |
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Revision as of 06:09, 2 April 2010
This page describes how to change the keyboard in a XO-1.5 Laptop to a non-membrane USB version.
Scope
These are detailed instructions for installing a non-membrane keyboard into an XO-1.5 laptop. They apply to all pre-production as well as production models. With little change, they also apply to the later model of the XO-1 (with a single capacitive touchpad).
Credit is freely given to the author of the instructions for doing this modification to an XO-1 (part I, II), found on instructables.com.
WARNING
This modification includes permanent modifications of the XO laptop, and cannot be reversed. Even if you are experienced, there is a significant chance of damaging the laptop beyond repair while following these instructions.
Material
You will need:
- An XO-1 (CL1A) or XO-1.5 (CL1B) laptop
- A micro USB keyboard (such as this one).
- A #1 screwdriver
- Fine pitch soldering equipment
- A magnifier of some sort (lens, loupe, microscope...)
- An X-Acto knife
- A small file and/or fine grade sandpaper
- A way of cutting steel and grinding plastic (such as a Dremel tool)
- cellulose (scotch) or polymide (kapton, preferred) tape
- quick drying epoxy glue or archival double-sided tape
Instructions
Preparing the Keyboard
Dismantling the XO
Make sure the laptop is running the latest firmware: q2e41 for XO-1 and q3a35 for XO-1.5. | |
Remove the plastic cover from the hinge between the top and bottom pieces of the XO. There are two screws in the top, holding the two pieces together. | |
Remove the handle cover. | |
Disconnect the top and bottom halves of the XO, setting the top unit aside for now. | |
Completely disassemble the bottom half (leaving only the FPC cable connected to the touchpad --- that connector is incredibly fragile and easy to break.) (link to disass. guide, except missing). | |
Remove the keyboard and XO KBC board. | |
Remove the waterproofing foam and rubber covering from the KBC controller. Save the rubber. |
Modifying the Keyboard Tray
Modifying the XO Plastic
Remove the spacing flanges from the side bumpers | |