Sekonic SR-3500 Operating Manual page 15

(14) Make sure to observe the following points when you handle the device
and USB cables. Otherwise, mechanical failure or damage may be caused.
* Do not forcibly pull or bend the USB cable.
* Always hold the plug when you insert or pull out the USB cable. Never
apply excessive force to the cable.
* When installing/moving the device or a PC, do not apply excessive power
to the cord or plug of the USB cable.
(15) Please do not put any substances and one's hand on the upper cover.
It will be occurred paper jamming or reading error
Precautions For Use
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