CARE, MAINTENANCE, TROUBLESHOOTING AND SERVICECarl Zeiss Maintenance Axio Vert.A198 431030-7044-001 05/20125.2 Maintenance5.2.1 Performing ChecksThe following checks should be performed at six-month intervals:General• Check the power cable and power plug for possible damage.• Switch off and secure the instrument if you detect any damage. Be sure to have defects repaired byZeiss Service.• Check weekly that the maximum operating time of halogen and HBO illuminators has not beenexceeded.Illumination• Check that the halogen and HBO illuminators are correctly set.• Check the electrical contacts of the illuminators.Optics• Visually check objectives and eyepieces for cleanliness and damage.5.2.2 Replacing Fuses on the MicroscopeAlways be sure to pull the powerplug before replacing fuses.Should any fuse on the instrument fail, the causeof such failure must first be determined and anytechnical defect that may exist must be properlyrepaired.The fuse compartment is located at the back of themicroscope. The compartment is combined withthe power input socket and contains twoT 3.15 A/H 250 V, 5 mm x 20 mm fuses held inthe fuse holder.• Pull the power plug.• Pull out the fuse holder (Fig. 5-1/2) frontward. Ifnecessary, use a small screwdriver for that.• Remove the fuses (Fig. 5-1/1) from the fuseholder and replace them with new ones.• Then slide the fuse holder back into the fuse compartment as far as it will go. Reconnect the powerplug.• Plug in the power plug.Fig. 5-1 Replacing Fuses
