Sony SDM-N80 Operating Instructions (primary manual) - Page 20

x As seen from above Display 30° Sensor phototransmitter 70 cm Also, the sensitivity of the user sensor is adjustable. For details on the user sensor adjustment, see "Using the user sensor" on page 18. There is a choice of three levels of sensitivity: 1, 2, and 3. To make the sensitivity high, select the larger number. Keep in mind, the settings are intended to optimize the sensitivity according to the angle of the display. Refer to the table below and adjust the angle of the display or sensitivity of the sensor. Display angle Choice Display angle 3 15° - 20° 2 10° - 15° 1 0° - 10° User detection area x As seen from the side Detection area gets narrower if tilted too far upwards 30° If the user is seated to the right of the center of the display, or if the display is tilted too far upwards, the user may be out of range of the user sensor. If so, readjust the placement and angle of the display, or the user's seat position. Are there any photoreflective objects, such as a wall or a chair, close to the sensor phototransmitter? Leave a space of more than 10 cm at the right and left side of the display and of more than 60 cm at the top. The sensor's infrared rays reflected from the wall may be misunderstood as the presence of a user and the low power consumption mode may not function. Similarly, a chair that has a tall back - approximately 80 cm or over - may cause a misreading and the low power consumption mode may not function. Is there any interference from the room illumination? Adjust the placement - distance from the illumination - and angle of the display so that the light from the illumination does not shine directly onto the sensor. The low power consumption mode may not function properly or the user sensor may not work properly if the light from the room illumination or a desktop lamp shines directly onto the sensor's phototransmitter. Is the sensor attracted by direct sunlight? To keep direct sunlight away from the sensor, adjust the lighting condition of the room using a curtain or a blind, or place the face of the display away from the window. If the room is too bright in broad daylight or the display is facing the window, the strong infrared rays of the sunlight may cause a malfunction of the user sensor. In addition, the user detection distance and angle may vary depending on the brightness of the surrounding area or the fabric of the user's clothes - particularly with black or dark colors. If these instructions do not resolve user detection problems, set the user sensor to OFF. 20