CARE, MAINTENANCE, TROUBLESHOOTING AND SERVICECarl Zeiss Maintenance Axiovert 2004-4 B 40-080 e 03/014.2 Maintenance4.2.1 Performing checksThe following checks should be performed regularly every six months.General• Check line cables and plugs for defects.• If any damage is visible, switch off the instrument. Have defects repaired by Zeiss service staff.• Make sure that the maximum operation time of the halogen and HBO / XBO lamps is not exceeded(once a week).Illumination• Check the correct setting of the halogen and HBO / XBO lamps.• Check contacts of the electrical connection points of the illuminators.Optics• Visual checking of cleanliness of objectives and eyepieces4.2.2 Changing the fuses on the microscopeThe fuses for the instrument input voltage arepositioned on the rear of the microscope stand.The fuse compartment, which contains two T4.0A/H 250 V 5x20 mm fuses, is combined with theinstrument socket.If fuses blow, the cause must be found out firstand any technical defect must be efficientlyeliminated.Always pull the power plug beforechanging the fuses.• Disconnect the instrument from the line. Pullout fuse compartment (4-1/1) in forwarddirection.• Remove fuses from the holder and insert new fuses.• Insert fuse holder back in the fuse compartment (4-1/2) until stop. Plug in power cords.Fig. 4-1 Changing the fuses
