PRS-T1: Sleep mode after 1 min

Hi,
the problem I'm experiencing with my PRS-T1 is that it automatically enters sleep mode after 1-2 minutes of inactivity (rather than after 10 minutes, as stated in the User Guide). It happens even when the battery is, or almost is, fully charged. It is pretty annoying at times as I'm often still reading that page. Is there any solution to this problem? Thanks!
P.S. I had the latest firmware already preinstalled when I bought my PRS-T1

Hello and welcome to the User Discussion Forum.
This is very unusual for the PRS-T1 Wifi reader to enter sleep mode after 1-2 minutes of inactivity. Please contact Sony support directly for service options.
http://esupport.sony.com/US/p/select-sy ... OR=CONTACT

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