XO Troubleshooting Guide: Difference between revisions

Latest revision as of 05:09, 28 October 2013

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english | español HowTo [ID# 293344] +/-

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

@@ Line 1: / Line 1: @@
+{{OLPC}}{{Translations}}__NOTOC__
-This is a troubleshooting guide for the [[Hardware_specification#Laptop_Hardware|XO laptop]].  It is geared toward troubleshooting production units running firmware version Q2D03 or greater.
+This is a troubleshooting guide for the [[Hardware#XO_Laptop|XO laptop]].
+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==
-''Still very much a work in progress!!  Feel free to add''
+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.
+==Display==
-=Start Here=
+If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]].
-==[[XO_Troubleshooting_PowerOn|Problems powering on]]==
-If you are having problems turning on your XO, see [[XO_Troubleshooting_PowerOn|Troubleshooting Power On]].
-==[[XO_Troubleshooting_Display|Display problems]]==
-If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnosis section]].
-==[[XO_Troubleshooting_Battery|Power and Battery problems]]==
+==Power and Battery==
 If you are having problems such as:
 * the battery is not charging
-* the battery is suddenly loosing charge
+* the battery is suddenly losing charge
+* the laptop won't run from a power adapter
-* the power adapter isn't working
+Then you should view:
-See the [[XO_Troubleshooting_Battery|Power and Battery diagnosis section]]
+* [[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==
-==[[XO_Troubleshooting_AV|Audio and Camera problems]]==
+If your laptop is having trouble connecting to other laptops or the Internet, see the [[XO_Troubleshooting_Network|Network diagnostics section]].
+==Audio and Camera==
-If you are having problems with the audio (microphone, speakers, headphones, or microphone input) or camera on an [[Hardware|XO laptop]], see the [[XO_Troubleshooting_AV|AV diagnosis 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]].
+==Touchscreen==
+See the [[XO_Troubleshooting_Touchscreen|Touchscreen section]].
-If you are having problems with the keyboard or touchpad on an XO laptop, see the [[XO_Troubleshooting_Keyboard|Keyboard diagnosis 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]].
+==Debugging Procedures==
-If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB diagnosis section]].
+The following are common debugging and test procedures:
+* [[XO Full Reset|Rebooting the Embedded Controller]] - This completely resets a laptop
-=Common Procedures=
+* [[XO_Self_Test|Hardware Self-Test]] is included in the [[Hardware#XO_Laptop|XO laptop]].
-The following are common debugging and test procedures:
+* [[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.
+** '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 [[XO_Self_Test|hardware self-test]].
+* A [[Serial_adapters|serial adapter]] is very useful for debugging dead laptops
+==Repair Procedures==
+The following are common repair procedures:
+* [[Reuse checklist|Summary Refurbishing & Reuse Checklist]]
-* [[Disassembly|'''Disassembly Guide''']]
+* [[Motherboard Handling Procedures]]
-* [[XO Full Reset|'''Rebooting the Embedded Controller''']] - This completely resets a laptop
+* [[Disassembly|Disassembly Guide]]
-* [[XO_Self_Test|'''A Hardware Self-Test''']] is included in the [[Hardware|XO laptop]].
+** [[Disassembly_top|Getting at the display and motherboard]]
-* [[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]]):
+** [[Disassembly_bottom|Replacing a keyboard/touchpad]]
-** '✓' '''(check) game pad key:''' forces a more detailed display while booting. See [[Startup Diagnosis]] for more details.  This is useful for debugging activation problems.
+** [[Screws|Guide to screws]]
-** '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.
+* Motherboard Guides: [[XO Motherboard|intro]], or [[XO_Motherboard_Repair|repair]]
-** '''Rocker left:''' invoke [[XO_Self_Test|hardware self-test]].
+* [[Activation_and_Developer_Keys|Getting a developer key for a laptop]]
-* [[Fix_Clock|'''Fixing an RTC problem''']] - Fix laptops which can't boot due to reset RTC time.
+* 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]]
+* [[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: Hardware]]
+[[Category:XO-1]]
+[[Category:XO-1.5]]
+[[Category:XO-1.75]]
+[[Category:XO-4]]
 [[Category: Developers]]