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| hw_problems [2012/01/21 18:32] – [Reversed polarity of one of the integrated speakers] Added schematics analisys paulf | hw_problems [2012/02/21 14:14] (current) – [Problems with Wifi/Wlan] turbooster |
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| ====== Known hardware issues ====== | ====== Known hardware issues ====== |
| ===== Problems with Wifi/Wlan ===== | ===== Problems with Wifi/Wlan ===== |
| Many people using the AC100 have reported that they have problems with the stability of Wifi reception. So before you get crasy or smash the AC100 onto the next wall please read this hint: | {{ :wifix.png?100|}} Many people using the AC100 have reported that they have problems with the stability of Wifi reception. So before you get crasy or smash the AC100 onto the next wall please read this hint: |
| [[http://lins.me/ac100/fixing_wifi.html|Fixing Wifi on Toshiba AC100]] ([[http://webcache.googleusercontent.com/search?q=cache:M9wUm4_mcH4J:lins.me/ac100/fixing_wifi.html+fixing+wifi+ac100&cd=1&hl=en&ct=clnk&gl=us|Google cache]] for the page in case the original is not accessible) | [[http://www.lins.me/ac100/fixing_wifi.html|Fixing Wifi on Toshiba AC100]] ([[http://webcache.googleusercontent.com/search?q=cache:CWFQqUjlK_gJ:www.lins.me/ac100/fixing_wifi.html+&cd=1&hl=de&ct=clnk|Google cache]] for the page in case the original is not accessible) |
| This Wiki still needs better pictures for opening the case, feel free to upload some if you try it. | |
| | To better understand how to open the display case look at altechnative's section on [[http://www.altechnative.net/2011/12/30/toshiba-ac100-screen-upgrade-to-1280x720/|upgrading the display]]. |
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| In short, the article suggests to dismantle the display part of the device and to remove the extra shielding (cut with a sharp knife the shield between the wifi adapter and the LCD). | In short, the article suggests to dismantle the display part of the device and to remove the extra shielding (cut with a sharp knife the shield between the wifi adapter and the LCD). |
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| According to the schematics and the photographs, the integrated speakers are properly connected to the TPA6017A2 stereo amplifier. But this amplifier seems to be driven improperly: RIN- is connected to the negative ALC5632 mono speaker output SPK_OUTN (which is ok) but LIN- (negative!) is connected to the SPK_OUT which is the positive line of the same mono output. This gets the same mono signal to both speakers but in antiphase. | According to the schematics and the photographs, the integrated speakers are properly connected to the TPA6017A2 stereo amplifier. But this amplifier seems to be driven improperly: RIN- is connected to the negative ALC5632 mono speaker output SPK_OUTN (which is ok) but LIN- (negative!) is connected to the SPK_OUT which is the positive line of the same mono output. This gets the same mono signal to both speakers but in antiphase. |
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| | Setting "SpeakerOut N Mux" to "RP/+R" and "SpeakerOut Mux" to "HPOut Mix" seems to be the only correct way to drive the integrated speakers. |
