6Chapter 6 Maintenance and inspections716-1 Inspections prior to shootingBefore setting off for a shooting session, perform the followinginspections to verify that the system is functioning correctly. Itis recommended that a color video monitor be used to checkthe images.6-1-1 Preparation for inspections6-1-2 Inspecting the camera unit1 Insert a fully charged battery.1 Set the zoom to the motorized zoom mode, and check itsoperations in this mode.Check that the image changes when the zoom is set tothe telephoto and wide-angle positions.2 Set the zoom to the manual zoom mode, and check itsoperations in this mode.Turn the manual zoom lever, and check that the imagechanges when the zoom is set to the telephoto and wide-angle positions.3 Set the aperture to the auto adjustment mode, point thelens at some objects with different brightness levels, andcheck that the auto aperture adjustment works.4 Set the aperture to the manual adjustment mode, turn theaperture ring, and check that the manual aperture isadjusted.5 While holding down the auto instantaneous apertureadjustment button, point the lens at some objects withdifferent brightness levels, and check that the autoinstantaneous aperture adjustment function works.6 Return the aperture to the auto adjustment mode, switchthe GAIN switch setting to L, M and H, and check that:≥ The aperture is adjusted for objects of the samebrightness level in tandem with the switching of the gainsetting.≥ The gain displayed on the viewfinder screen is switchedin tandem with the switching of the gain setting.7 When a lens with an extender has been installed, set theextender to the operating position, and check that it worksproperly.2 Set the POWER switch to ON, and check that the HUMIDdisplay has not come on and that at least 5 segments ofthe BATTERY display are lighted.≥ If the HUMID display has come on, wait until it goes off.≥ If fewer than 5 segments of the BATTERY display havelighted, replace the battery with one having an adequatecharge.4 After checking the following points, insert the cassettetape and close the cassette holder.≥ The cassette tape must not be set to the accidentalerasure prevention mode.≥ There must be no tape slack.≥ The tape must be free from condensation.3 Check that there are no cables near the cassette holderor top panel, and then press the EJECT button to openthe cassette holder.123, 4