Calibrating touch screen

Pumpa · 08-06-2012, 05:04 AM

hello,

Do you know anyone how to calibrate touch screen on Kindle Touch ? I have one with shifted about 2cm to right, so if i want to touch to button i must touch to 2cm left from button. I did not found in diags. Maybe there is some app can be run from ssh. Thank you.

geekmaster · 08-06-2012, 05:10 AM

Quote:

Originally Posted by Pumpa

hello,

Do you know anyone how to calibrate touch screen on Kindle Touch ? I have one with shifted about 2cm to right, so if i want to touch to button i must touch to 2cm left from button. I did not found in diags. Maybe there is some app can be run from ssh. Thank you.

The touchscreen is infrared, from a ring of LEDs and photodiodes behind the black bezel edge next to the eink screen. It may be sensitive to dust or lint blocking part of the light path at the bezel, causing a false touch. The kindle framework returns the midpoint between two touch positions, so a false touch 4 cm away from your finger could look like a 2 cm shift of position. Try cleaning the black bezel edge.

Also, if you have a second finger near the screen, it can cause a second touch that moves the reported position to midway between your two fingers. Be sure to keep other fingers well away from the screen.

ixtab · 08-06-2012, 05:11 AM

I may be wrong, but since recognizing touches on the K5 is done using IR, I don't think there's anything to calibrate. Just call Kindle CS and they'll most probably send you a replacement.

Pumpa · 08-07-2012, 10:56 AM

Cleaning not help. Probably HW failure

HarryT · 08-07-2012, 11:02 AM

Contact Kindle Customer Service. All Kindle Touches are still under warranty, and this is undoubtedly a warranty repair.

I assume you've tried rebooting the Kindle?

08-06-2012, 05:04 AM	#1
Pumpa Enthusiast Posts: 35 Karma: 39448 Join Date: Jul 2007 Device: Sony PRS-500	Calibrating touch screen hello, Do you know anyone how to calibrate touch screen on Kindle Touch ? I have one with shifted about 2cm to right, so if i want to touch to button i must touch to 2cm left from button. I did not found in diags. Maybe there is some app can be run from ssh. Thank you.

08-06-2012, 05:11 AM	#3
ixtab (offline) Posts: 2,907 Karma: 6736094 Join Date: Dec 2011 Device: K3, K4, K5, KPW, KPW2	I may be wrong, but since recognizing touches on the K5 is done using IR, I don't think there's anything to calibrate. Just call Kindle CS and they'll most probably send you a replacement. Last edited by ixtab; 08-06-2012 at 05:21 AM.

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08-07-2012, 10:56 AM	#4
Pumpa Enthusiast Posts: 35 Karma: 39448 Join Date: Jul 2007 Device: Sony PRS-500	Cleaning not help. Probably HW failure

08-07-2012, 11:02 AM	#5
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Contact Kindle Customer Service. All Kindle Touches are still under warranty, and this is undoubtedly a warranty repair. I assume you've tried rebooting the Kindle?

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