Carl Zeiss Axiolab A4-4 B 40-015 e 06/994.2 TroubleshootingTroubleshooting on the Axiolab A microscope is limited to only a few actions:• Checking the line cable• Checking the set instrument voltage and changing the fuses• Checking the illumination and changing the lamp− Defective fuse(s) → change the fuses according to paragraph (1)− defective halogen lamp → change the lamp according to paragraph (2) or (3)(1) Check the Line Cable and Fuses andChange FusesMake sure to disconnect the instru-ment from the line first!• Check line cable (4-1/1) and replace it, ifrequired.• Use 2.0 mm watchmaker’s screwdriver to pressthe two springs at the side of the fuse holder(4-1/2) to the inside via the groove and removefuse holder.• Check fuse inserts (4-1/3) and replace defectivefuses with new ones. Make sure to use onlyT 0.8 A; 250 V; 5 × 20 mm fuses!• Insert fuse holder again until the springs at theside can be heard to engage.• Connect the instrument to the line.Fig. 4-1 Changing the fuses