BenQ RP750K Installation Handbook - Page 88
Noise/interference, Compatibility - Cannot detect IFP/DS, Android/APPs
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Check item Try with shorter cables (shorter than 3M for display cable/1.8M for touch USB cable). If the problem is solved, please try to add the repeater. Noise/interference Check if completed Does the problem still exist? Yes No Check item Check if completed Does the problem still exist? Yes No Unplug the USB cable. If unplugging the USB cable can solve the problem, please use the digital signal (ex. HDMI or DVI) with the touch USB cable. Try to use another AC socket. Try to use the AC jack without ground. Compatibility - Cannot detect IFP/DS Check item Try another PC/NB (different brand/model). Try to add the repeater to boost the signal. Check if completed Does the problem still exist? Yes No Android/APPs Check item Uninstall any other non-BenQ authorized/preloaded APPs. Clear the APP data (setting>Application>clear data). Restore the setting under Android Setting. Check if completed Does the problem still exist? Yes No 88 Appendix 2: Basic Troubleshooting Checklists for IFP