Bosch Appliances A5 installation manual Troubleshooting

Installation Manual for DiBos Video System

Maintenance and Service (continued)

9.4Troubleshooting

The following faults have to be rectified if necessary:

DCounter light

If recordings show impairment due to counter light, either block out the light source, e.g. through curtains on windows or shades on lights, or change the location of the camera.

DReflections

If the optical room surveillance system is installed inside special glazing to hinder bullets or break–in attempts, the lighting may pro- duce unfavorable reflections. These are stronger as the intensity of the light inside the glazing becomes higher. Reflections of this kind can be reduced if the area outside the glazing is lit better and the cameras are positioned nearer to the glazing. Reflections can often be avoided by darkening light sources behind or next to the camera. If these measures do not help matters, a polarizing filter can be placed in front of the lens.

DFocus

When checking the recordings, make sure that persons and objects inside the area of surveillance are in good focus.

The gray or ND filter can be used in front of the lens to improve the focus.

DDirt

The quality of recordings is often impaired by dirt on the lens or the screen of the enclosure.

Functional interference can often be eliminated by:

1.Disconnecting and reestablishing the local or remote connection in the video system program

2.Exiting the program followed by a restart or

3.A warm start or switching the system off and back on (waiting approximately 20 s in between)

If this does not result in normal operation, check the programming. If the fault cannot be rectified, the system must be replaced.

610–4.998.137.176 – 135 – A5/11–2004