Dahua Technology LM49-S400 Manuel de l'utilisateur - Page 10
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1. Please wipe dust and other particles off with a clean soft towel.
2. If it is still not clean, please use a neutral cleaner along with the clean soft towel. Wipe dry after
cleaning it.
3. Rubbing or scrapping the housing with fingernails or other hard objects might scratch the
housing.
Before consulting service staff, please use the following chart to attempt to diagnose the issue.
Problem
No image or sound
Inferior sound, normal image
Inferior image, normal sound
Poor signal
Vague image
Double image
Interfering lines in image
Twisty image
Poor signal
Rung stripe in image
Image vertically scrolls
Inferior color
No color
How to Clean Product
Troubleshooting
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Fix
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