XO Troubleshooting Guide
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{{OLPC}}{{Translations}}__NOTOC__ | {{OLPC}}{{Translations}}__NOTOC__ | ||
| - | This is a troubleshooting guide for the [[ | + | This is a troubleshooting guide for the [[Hardware#XO_Laptop|XO laptop]]. |
| - | It is for troubleshooting production [[ | + | 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. |
| - | + | ||
| - | + | ||
==[[XO_Troubleshooting_PowerOn|Problems 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]]. | + | 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]]== | ==[[XO_Troubleshooting_Display|Display problems]]== | ||
| - | If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display | + | If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]]. |
| - | == | + | ==Power and Battery problems== |
| - | + | If you are having problems such as: | |
* the battery is not charging | * the battery is not charging | ||
| - | * the battery is suddenly | + | * the battery is suddenly losing charge |
* the laptop won't run from a power adapter | * 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. | ||
| + | |||
| + | ==[[XO_Troubleshooting_Network|Network Problems]]== | ||
| + | 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]]== | ==[[XO_Troubleshooting_AV|Audio and Camera problems]]== | ||
| - | If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an [[ | + | 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]]== | ==[[XO_Troubleshooting_Keyboard|Keyboard and Touchpad problems]]== | ||
| - | If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard | + | If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard diagnostics section]]. |
==[[XO_Troubleshooting_USB|USB problems]]== | ==[[XO_Troubleshooting_USB|USB problems]]== | ||
| - | If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB | + | If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB diagnostics section]]. |
==Debugging Procedures== | ==Debugging Procedures== | ||
| Line 30: | Line 36: | ||
* [[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_Self_Test|'''A 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:''' invoke [[XO_Self_Test|hardware self-test]]. | ||
| + | * A [[Serial_adapters|serial adapter]] is very useful for debugging dead laptops | ||
==Repair Procedures== | ==Repair Procedures== | ||
The following are common repair procedures: | The following are common repair 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]] | ||
| Line 45: | Line 53: | ||
* Motherboard Guides: [[XO Motherboard|intro]], or [[XO_Motherboard_Repair|repair]] | * Motherboard Guides: [[XO Motherboard|intro]], or [[XO_Motherboard_Repair|repair]] | ||
* [[Activation_and_Developer_Keys|Getting a developer key for a laptop]] | * [[Activation_and_Developer_Keys|Getting a developer key for a laptop]] | ||
| - | |||
| - | |||
* [[Fix_Clock#How_to_set_up_an_XO_as_a_serial_terminal|Turning an XO into a serial terminal]] | * [[Fix_Clock#How_to_set_up_an_XO_as_a_serial_terminal|Turning an XO into a serial terminal]] | ||
| - | * [[XO_LiFePO4_Recovery_Procedure|Fixing | + | * [[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 |
| + | * [[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_Power_Diagram|A detailed description of the laptop power circuitry (XO-1)]] | ||
| + | * [[Memory Bit Mapping]] | ||
[[Category: Repair]] | [[Category: Repair]] | ||
[[Category: Hardware]] | [[Category: Hardware]] | ||
| + | [[Category:XO-1]] | ||
| + | [[Category:XO-1.5]] | ||
| + | [[Category:XO-1.75]] | ||
[[Category: Developers]] | [[Category: Developers]] | ||
Current revision as of 16:28, 7 June 2012
This page is monitored by the OLPC team.
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.
[edit] Problems 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.
[edit] Display problems
If you are having problems with the display on an XO laptop, see the Display diagnostics section.
[edit] Power and Battery problems
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.
[edit] Network Problems
If your laptop is having trouble connecting to other laptops or the Internet, see the Network diagnostics section.
[edit] 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 diagnostics section.
[edit] Keyboard and Touchpad problems
If you are having problems with the keyboard or touchpad on an XO laptop, see the Keyboard diagnostics section.
[edit] USB problems
If you are having problems with the USB interfaces on an XO laptop, see the USB diagnostics section.
[edit] 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 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: invoke hardware self-test.
- A serial adapter is very useful for debugging dead laptops
[edit] Repair Procedures
The following are common repair procedures:
- Motherboard Handling Procedures
- Disassembly Guide
- Motherboard Guides: intro, or repair
- Getting a developer key for a laptop
- Turning an XO into a serial terminal
- Finding and fixing bad blocks of NAND Flash
- Replacing/Recovering the EC (SPI) Flash - Replacing the Embedded Controller Flash
- Fixing an RTC problem - Fix laptops which can't boot due to reset RTC time.
- Fixing LiFePO4 batteries that stop charging
- A detailed description of the laptop power circuitry (XO-1)
- Memory Bit Mapping
Categories: Pages monitored by OLPC | Translated Pages | Repair | Hardware | XO-1 | XO-1.5 | XO-1.75 | Developers
Developers
Language support > Translated Pages
Pages monitored by OLPC
Projects > Hardware
Projects > Hardware > XO > XO-1
Projects > Hardware > XO > XO-1.5
Projects > Hardware > XO > XO-1.75
Repair
