JVC VN-C655U Instructions - Page 7

Ⅵ Note on consumable parts Camera setups with which auto focusing may The following parts are consumable and should be difficult: be replaced after a certain number of hours or • When the AGC is activated and the image is a count of operations. coarse. The service lives given below are only typical • When SENSE UP is activated and the im- values. They may vary depending on the oper- age contains only little motion. ating environment and conditions. Note that the replacement of consumable parts is chargeable even when they are replaced before the termination of the warranty period. Ⅵ Zooming When zooming is stopped near the Telephoto end during manual operation or by selecting a preset position, focusing may deviate slightly. In addition, • Zoom lens assembly the manual zooming operation may not always be Zooming operation : 2 million times smooth. Focusing operation : 4 million times These phenomena are due to the characteristics • Slip rings : 5 million operations of the built-in lens and are not malfunctions. • Cooling fan : 30,000 hours approx. Ⅵ Preset positions Ⅵ Note on auto focusing • The zooming position of the camera can be set Although this unit incorporates a one-push to a total of 100 preset positions, including the auto-focusing system and EASY AF functions, home position. auto-focusing may sometimes be impossible • The TILT position can be set and operated only depending on the object and camera setup. In between 0° to 90° even when the item "FLIP" is this case, adjust the focusing manually. set to ON. Objects and images with which auto focusing may be difficult: Ⅵ Observe the following points when carrying out • When the image brightness is extremely high. • When the image brightness is extremely low. • When the image brightness varies continu- ously (for example when the object is a flashing light). • When the image contrast (difference between bright and dark) is very poor. • When the image does not contain a vertical maintenance of the camera. • Turn off the power to all equipment to be used before proceeding. • Clean the dome cover using a lens cleaning cloth (or tissue). The dome cover may become stained in a very short period in certain operating environments. If the dome cover lens becomes excessively con- contour component. taminated, clean it with a lens cleaning cloth (or • When vertical stripe patterns recur on the tissue) moistened with a solution of neutral de- screen. tergent in water. 7