Due to the characteristics of diode lasers, the laser power becomes weaker over time as the laser is used. It is recommended that you replace the laser head if it becomes weak. However, if the laser power suddenly weakens, the lens may be contaminated, so clean the lens. * Processing longer than the recommended continuous processing time can also cause the laser power to suddenly weaken.
Cleaning the lens
Clean with a cotton swab with alcohol. Wipe off the lens many times, taking care not to damage the lens.