XO Troubleshooting Guide: Difference between revisions

From OLPC
Jump to navigation Jump to search
No edit summary
 
(43 intermediate revisions by 7 users not shown)
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==
=Problems powering on=
If you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnostics section]].


==Power and Battery==
If you are having problems turning on your XO, see [[XO_Troubleshooting_PowerOn|Troubleshooting Power On]].
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:
==Display problems==
* [[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 you are having problems with the display on an XO laptop, see the [[XO_Troubleshooting_Display|Display diagnosis section]].
If your laptop is having trouble connecting to other laptops or the Internet, see the [[XO_Troubleshooting_Network|Network diagnostics section]].


==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]].


==Keyboard and Touchpad==
If you are having problems with the audio (microphone, speakers, headphones, or microphone input) on an XO laptop, see the [[XO_Troubleshooting_AV|AV diagnosis section]].
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]].
==Keyboard and Touchpad problems==


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


==USB problems==
==Debugging Procedures==
The following are common debugging and test procedures:


* [[XO Full Reset|Rebooting the Embedded Controller]] - This completely resets a laptop
If you are having problems with the USB interfaces on an XO laptop, see the [[XO_Troubleshooting_USB|USB diagnosis section]].
* [[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]]):
** '✓' (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==
==Power and Battery problems==
The following are common repair procedures:


* [[Reuse checklist|Summary Refurbishing & Reuse Checklist]]
* [[Motherboard Handling Procedures]]
* [[Disassembly|Disassembly Guide]]
** [[Disassembly_top|Getting at the display and motherboard]]
** [[Disassembly_bottom|Replacing a keyboard/touchpad]]
** [[Screws|Guide to screws]]
* Motherboard Guides: [[XO Motherboard|intro]], or [[XO_Motherboard_Repair|repair]]
* [[Activation_and_Developer_Keys|Getting a developer key for a laptop]]
* 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]]
=Power and Battery problems=
[[Category: Hardware]]

[[Category:XO-1]]
==The laptop won't run using the battery==
[[Category:XO-1.5]]

[[Category:XO-1.75]]
==The laptop won't run using the power adapter==
[[Category:XO-4]]

[[Category: Developers]]
==The laptop emits a high pitched whine when using the power adapter==

==The laptop can't charge the battery==

# Indication: The charging led is burning yellow and never goes green.
# Debug:
## check if battery connector in the chassis has 7 volts.
## check if battery connector on the motherboard has 7 volts.

(Garbled text here!) < < < < < < < <

## If the has If This is due to a loose cable / connector. Check wiring and connectors st
# fixes:
## bewing pins in the connectors
## resolder / replace wires

=Common Procedures=
==Rebooting the Embedded Controller==
See [[XO Full Reset]].

==Boot options==
Different boot options are available through pressing buttons around the screen during the initial boot process (immediately after pressing the power button). These are included here for completeness. More information is available 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.

===Hardware Self-Test===
A [[XO_Self_Test|Hardware Self-test]] is included in the [[Hardware|XO laptop]].

Latest revision as of 05:09, 28 October 2013

  This page is monitored by the OLPC team.
  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:

Retrieved from "http://wiki.laptop.org/mediawiki/index.php?title=XO_Troubleshooting_Guide&oldid=293344"