XO Troubleshooting Guide: Difference between revisions

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It is for troubleshooting production [[Hardware#XO_Laptop|XO laptops]] running firmware version Q2D03 or greater. While this is intended for use in a repair center, most of the procedures can be followed by users to [[Repair|repair]] their laptops.
It is for troubleshooting production [[Hardware#XO_Laptop|XO laptops]] running firmware version Q2D03 or greater. While this is intended for use in a repair center, most of the procedures can be followed by users to [[Repair|repair]] their laptops.


==Powering on==
==[[XO_Troubleshooting_PowerOn|Problems powering on]]==
If you are having problems getting the XO to power on, see [[XO_Troubleshooting_PowerOn|Troubleshooting Power On]]. The [[Startup Diagnosis]] page also describes how end users (not repair centers) can debug power-on or boot problems.
If you are having problems getting the XO to power on, see [[XO_Troubleshooting_PowerOn|Troubleshooting Power On]]. The [[Startup Diagnosis]] page also describes how end users (not repair centers) can debug power-on or boot problems.


==[[XO_Troubleshooting_Display|Display problems]]==
==Display==
If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]].
If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]].


==Power and Battery problems==
==Power and Battery==
If you are having problems such as:
If you are having problems such as:
* the battery is not charging
* the battery is not charging
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Then you should view:
Then you should view:
* '''[[XO Troubleshooting Battery]]''', if you believe the problem is contained within the battery itself, or
* [[XO Troubleshooting Battery]], if you believe the problem is contained within the battery itself, or
* '''[[XO Troubleshooting Power]]''', if you believe the problem is contained within the laptop (e.g. charging circuitry, power input circuitry), or
* [[XO Troubleshooting Power]], if you believe the problem is contained within the laptop (e.g. charging circuitry, power input circuitry), or
* Both of the above, if you are unsure where the problem is localised.
* Both of the above, if you are unsure where the problem is localised.


==[[XO_Troubleshooting_Network|Network Problems]]==
==Network==
If your laptop is having trouble connecting to other laptops or the Internet, see the [[XO_Troubleshooting_Network|Network diagnostics section]].
If your laptop is having trouble connecting to other laptops or the Internet, see the [[XO_Troubleshooting_Network|Network diagnostics section]].


==[[XO_Troubleshooting_AV|Audio and Camera problems]]==
==Audio and Camera==
If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an [[Hardware#XO_Laptop|XO laptop]], see the [[XO_Troubleshooting_AV|AV diagnostics section]].
If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an [[Hardware#XO_Laptop|XO laptop]], see the [[XO_Troubleshooting_AV|AV diagnostics section]].


==[[XO_Troubleshooting_Keyboard|Keyboard and Touchpad problems]]==
==Keyboard and Touchpad==
If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard diagnostics section]].
If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard diagnostics section]].


==USB==
==[[XO_Troubleshooting_USB|USB problems]]==
If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB diagnostics section]].
If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB diagnostics section]].


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The following are common debugging and test procedures:
The following are common debugging and test procedures:


* [[XO Full Reset|'''Rebooting the Embedded Controller''']] - This completely resets a laptop
* [[XO Full Reset|Rebooting the Embedded Controller]] - This completely resets a laptop
* [[XO_Self_Test|'''A Hardware Self-Test''']] is included in the [[Hardware#XO_Laptop|XO laptop]].
* [[XO_Self_Test|Hardware Self-Test]] is included in the [[Hardware#XO_Laptop|XO laptop]].
* [[Cheat codes|'''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]]):
* [[Cheat codes|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 [[XO_Troubleshooting_PowerOn#The_display_is_showing_an_XO_icon|Troubleshooting Power-On]] for more details. This is useful for debugging activation problems.
** '✓' (check) game pad key: forces a more detailed display while booting. See [[XO_Troubleshooting_PowerOn#The_display_is_showing_an_XO_icon|Troubleshooting Power-On]] 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.
** '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 [[XO_Self_Test|hardware self-test]].
** Rocker left: run the [[XO_Self_Test|hardware self-test]].
* A [[Serial_adapters|serial adapter]] is very useful for debugging dead laptops
* A [[Serial_adapters|serial adapter]] is very useful for debugging dead laptops


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The following are common repair procedures:
The following are common repair procedures:


* [[Reuse checklist|'''Summary Refurbishing & Reuse Checklist''']]
* [[Reuse checklist|Summary Refurbishing & Reuse Checklist]]
* [[Motherboard Handling Procedures]]
* [[Motherboard Handling Procedures]]
* [[Disassembly|'''Disassembly Guide''']]
* [[Disassembly|Disassembly Guide]]
** [[Disassembly_top|Getting at the display and motherboard]]
** [[Disassembly_top|Getting at the display and motherboard]]
** [[Disassembly_bottom|Replacing a keyboard/touchpad]]
** [[Disassembly_bottom|Replacing a keyboard/touchpad]]
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* Using an XO as a serial terminal on either [[Serial_adapters#Linux|Linux]] or [[Firmware/Serial_Terminal|Open Firmware]],
* Using an XO as a serial terminal on either [[Serial_adapters#Linux|Linux]] or [[Firmware/Serial_Terminal|Open Firmware]],
* [[XO_Flash_Bad_Blocks|Finding and fixing bad blocks of NAND Flash]]
* [[XO_Flash_Bad_Blocks|Finding and fixing bad blocks of NAND Flash]]
* [[SPI_FLASH_Recovery|'''Replacing/Recovering the EC (SPI) Flash''']] - Replacing the [[Embedded_controller|Embedded Controller]] Flash
* [[SPI_FLASH_Recovery|Replacing/Recovering the EC (SPI) Flash]] - Replacing the [[Embedded_controller|Embedded Controller]] Flash
* [[Fix_Clock|'''Fixing an RTC problem''']] - Fix laptops which can't boot due to reset RTC time.
* [[Fix_Clock|Fixing an RTC problem]] - Fix laptops which can't boot due to reset RTC time.
* [[XO_LiFePO4_Recovery_Procedure|Fixing LiFePO<sub>4</sub> batteries that stop charging]]
* [[XO_LiFePO4_Recovery_Procedure|Fixing LiFePO<sub>4</sub> batteries that stop charging]]
* [[XO_Power_Diagram|A detailed description of the laptop power circuitry (XO-1)]]
* [[XO_Power_Diagram|A detailed description of the laptop power circuitry (XO-1)]]
* [[Memory Bit Mapping]]
* [[Memory Bit Mapping]]



[[Category: Repair]]
[[Category: Repair]]
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[[Category:XO-1.5]]
[[Category:XO-1.5]]
[[Category:XO-1.75]]
[[Category:XO-1.75]]
[[Category:XO-4]]
[[Category: Developers]]
[[Category: Developers]]

Revision as of 03:23, 13 August 2013

  This page is monitored by the OLPC team.
  english | español HowTo [ID# 291380]  +/-  

This is a troubleshooting guide for the XO laptop. It is for troubleshooting production XO laptops running firmware version Q2D03 or greater. While this is intended for use in a repair center, most of the procedures can be followed by users to repair their laptops.

Powering on

If you are having problems getting the XO to power on, see Troubleshooting Power On. The Startup Diagnosis page also describes how end users (not repair centers) can debug power-on or boot problems.

Display

If you are having problems with the display on an XO laptop, see the Display diagnostics section.

Power and Battery

If you are having problems such as:

  • the battery is not charging
  • the battery is suddenly losing charge
  • the laptop won't run from a power adapter

Then you should view:

  • XO Troubleshooting Battery, if you believe the problem is contained within the battery itself, or
  • XO Troubleshooting Power, if you believe the problem is contained within the laptop (e.g. charging circuitry, power input circuitry), or
  • Both of the above, if you are unsure where the problem is localised.

Network

If your laptop is having trouble connecting to other laptops or the Internet, see the Network diagnostics section.

Audio and Camera

If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an XO laptop, see the AV diagnostics section.

Keyboard and Touchpad

If you are having problems with the keyboard or touchpad on an XO laptop, see the Keyboard diagnostics section.

USB

If you are having problems with the USB interfaces on an XO laptop, see the USB diagnostics section.

Debugging Procedures

The following are common debugging and test procedures:

  • Rebooting the Embedded Controller - This completely resets a laptop
  • 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 Troubleshooting Power-On 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: run the hardware self-test.
  • A serial adapter is very useful for debugging dead laptops

Repair Procedures

The following are common repair procedures:

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