XO Troubleshooting Guide: Difference between revisions
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{{OLPC}}{{Translations}}__NOTOC__ |
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This is a troubleshooting guide for the [[ |
This is a troubleshooting guide for the [[Hardware#XO_Laptop|XO laptop]]. |
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While this is intended for use in a repair center, most of the procedures can be followed by users to [[Repair|repair]] their laptops. |
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It is for troubleshooting production [[Hardware_specification#Laptop_Hardware|XO laptops]] running firmware version Q2D03 or greater. |
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==Powering on== |
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''Still very much a work in progress!! Feel free to add'' |
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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. |
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==Display== |
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==[[XO_Troubleshooting_PowerOn|Problems powering on]]== |
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If you are having problems |
If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]]. |
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==Power and Battery== |
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==[[XO_Troubleshooting_Display|Display problems]]== |
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If you are having problems |
If you are having problems such as: |
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==[[XO_Troubleshooting_Battery|Power and Battery problems]]== |
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See the [[XO_Troubleshooting_Battery|Power and Battery diagnosis section]] if you are having problems such as: |
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* the battery is not charging |
* the battery is not charging |
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* the battery is suddenly |
* the battery is suddenly losing charge |
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* the laptop won't run from a power adapter |
* the laptop won't run from a power adapter |
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Then you should view: |
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==[[XO_Troubleshooting_AV|Audio and Camera problems]]== |
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* [[XO Troubleshooting Battery]], if you believe the problem is contained within the battery itself, or |
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If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an [[Hardware_specification#Laptop_Hardware|XO laptop]], see the [[XO_Troubleshooting_AV|AV diagnosis section]]. |
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* [[XO Troubleshooting Power]], if you believe the problem is contained within the laptop (e.g. charging circuitry, power input circuitry), or |
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* Both of the above, if you are unsure where the problem is localised. |
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==Network== |
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==[[XO_Troubleshooting_Keyboard|Keyboard and Touchpad problems]]== |
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If |
If your laptop is having trouble connecting to other laptops or the Internet, see the [[XO_Troubleshooting_Network|Network diagnostics section]]. |
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==Audio and Camera== |
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==[[XO_Troubleshooting_USB|USB problems]]== |
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If you are having problems with the |
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]]. |
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==Keyboard and Touchpad== |
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If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard diagnostics section]]. |
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==Touchscreen== |
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See the [[XO_Troubleshooting_Touchscreen|Touchscreen section]]. |
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==USB== |
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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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==Debugging Procedures== |
==Debugging Procedures== |
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The following are common debugging and test procedures: |
The following are common debugging and test procedures: |
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* [[XO Full Reset| |
* [[XO Full Reset|Rebooting the Embedded Controller]] - This completely resets a laptop |
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* [[XO_Self_Test| |
* [[XO_Self_Test|Hardware Self-Test]] is included in the [[Hardware#XO_Laptop|XO laptop]]. |
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* [[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]]): |
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** '✓' |
** '✓' (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. |
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** 'O' |
** '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. |
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** |
** Rocker left: run the [[XO_Self_Test|hardware self-test]]. |
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* A [[Serial_adapters|serial adapter]] is very useful for debugging dead laptops |
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==Repair Procedures== |
==Repair Procedures== |
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The following are common repair procedures: |
The following are common repair procedures: |
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* [[Reuse checklist|Summary Refurbishing & Reuse Checklist]] |
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| ⚫ | |||
* [[Motherboard Handling Procedures]] |
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** [[Disassembly_top|Getting at the display and motherboard]] |
** [[Disassembly_top|Getting at the display and motherboard]] |
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** [[Disassembly_bottom|Replacing a keyboard/touchpad]] |
** [[Disassembly_bottom|Replacing a keyboard/touchpad]] |
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** [[Screws|Guide to screws]] |
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* Motherboard Guides: [[XO Motherboard|intro]], or [[XO_Motherboard_Repair|repair]] |
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* [[Activation_and_Developer_Keys|Getting a developer key for a laptop]] |
* [[Activation_and_Developer_Keys|Getting a developer key for a laptop]] |
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* Using an XO as a serial terminal on either [[Serial_adapters#Linux|Linux]] or [[Firmware/Serial_Terminal|Open Firmware]], |
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| ⚫ | |||
* [[XO_Flash_Bad_Blocks|Finding and fixing bad blocks of NAND Flash]] |
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* [[ |
* [[SPI_FLASH_Recovery|Replacing/Recovering the EC (SPI) Flash]] - Replacing the [[Embedded_controller|Embedded Controller]] Flash |
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* [[Fix_Clock#How_to_set_up_an_XO_as_a_serial_terminal|Turning an XO into a serial terminal]] |
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| ⚫ | |||
* [[XO_LiFePO4_Recovery_Procedure|Fixing |
* [[XO_LiFePO4_Recovery_Procedure|Fixing LiFePO<sub>4</sub> batteries that stop charging]] |
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* [[ |
* [[XO_Power_Diagram|A detailed description of the laptop power circuitry (XO-1)]] |
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* [[Memory Bit Mapping]] |
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[[Category: Repair]] |
[[Category: Repair]] |
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[[Category: Hardware]] |
[[Category: Hardware]] |
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[[Category:XO-1]] |
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[[Category:XO-1.5]] |
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[[Category:XO-1.75]] |
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[[Category:XO-4]] |
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[[Category: Developers]] |
[[Category: Developers]] |
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Latest revision as of 05:09, 28 October 2013
This page is monitored by the OLPC team.
This is a troubleshooting guide for the XO laptop. 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.
Touchscreen
See the Touchscreen 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:
- Summary Refurbishing & Reuse Checklist
- Motherboard Handling Procedures
- Disassembly Guide
- Motherboard Guides: intro, or repair
- Getting a developer key for a laptop
- Using an XO as a serial terminal on either Linux or Open Firmware,
- 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