XO Troubleshooting Guide
This is a troubleshooting guide for the XO laptop. It is geared toward troubleshooting production units running firmware version Q2D03 or greater.
Still very much a work in progress!! Feel free to add
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Problems powering on
If you are having problems getting the XO to power on, see Troubleshooting Power On.
Display problems
If you are having problems with the display on an XO laptop, see the Display diagnosis section.
Power and Battery problems
See the Power and Battery diagnosis section if you are having problems such as:
- the battery is not charging
- the battery is suddenly loosing charge
- the laptop won't run from a power adapter
Audio and Camera problems
If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an XO laptop, see the AV diagnosis section.
Keyboard and Touchpad problems
If you are having problems with the keyboard or touchpad on an XO laptop, see the Keyboard diagnosis section.
USB problems
If you are having problems with the USB interfaces on an XO laptop, see the USB diagnosis section.
Common Procedures
Debugging Procedures
The following are common debugging and test procedures:
- Rebooting the Embedded Controller - This completely resets a laptop
- A Hardware Self-Test is included in the XO laptop.
- Boot options - Different boot options are available through pressing buttons around the screen during the initial boot process (immediately after pressing the power button). A sampling (more at Cheat codes):
- '✓' (check) game pad key: forces a more detailed display while booting. See Startup Diagnosis for more details. This is useful for debugging activation problems.
- 'O' game pad key: alternate between the current boot image and a previous one. In laptops which have never been upgraded, there is no previous boot image to use.
- Rocker left: invoke hardware self-test.
Repair Procedures
The following are common debugging and test procedures:
- Disassembly Guide
- Fixing an RTC problem - Fix laptops which can't boot due to reset RTC time.
- Replacing the EC Flash - Replacing the Embedded Controller Flash
- Turning an XO into a serial terminal