Denso QK11-U User Manual page 10

Proper Care of the QK11-U
When cleaning, always unplug the connector for safety.
Dust or dirt on scanning window will affect the reading of codes: Clean the window
before using the scanner.
For cleaning, first use air brush, etc. to blow off dust, and then lightly wipe dirt off using
dry, soft cloth (eyeglasses cleaning cloth, etc.).
Wipe off hard-to-remove dirt with a fully wrung out cloth moistened in water with diluted
neutral detergent, and then use a dry, soft cloth to wipe off moisture so that no detergent
remains.
Any dirt or scratch on scanning window will affect the reading of codes: Ask your dealer
to replace the scanning window.
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