Pioneer HANDWRITING DEVICE PDK-50HW3 - Manual (Page 41)

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5. Maintenance and Cleaning
e) Replacing the pen tip
If the tip becomes deformed and writing quality deteriorates, replace the tip with one of the two supplied extras.
Note:
Continued use of a worn pen tip may damage the display.
1. Remove the tip.
2. Insert one of the supplied replacement tips.
f) Pen battery life
The battery in the pen has a life of about 20 hours of continuous use (when an alkaline battery is used).