(1) Failure: The tungsten lamp does not light;
Reason: The filament of the tungsten lamp is burnt out (the highest probability for this reason);
Check: there is working voltage at both ends of the tungsten lamp, but the lamp is not on; remove the tungsten lamp and test with the resistance file of a multimeter.
Disposal: replace the new tungsten lamp;
(2) Failure: The tungsten lamp does not light;
Reason: There is no lighting voltage;
Check: the fuse is blown;
Disposal: replace the fuse, (if you blow it again after the replacement, check the power supply circuit);
(3) Failure: the deuterium lamp does not light;
Reason: the life of the deuterium lamp expires (the highest probability for this reason);
Check: the filament voltage and anode voltage are both, and the filament may also be unbroken (you can see the filament red);
Disposal: replace the deuterium lamp;
(4) Failure: the deuterium lamp does not light;
Reason: Deuterium lamp ignition circuit failure;
Check: during the ignition process of the deuterium lamp, the filament generally needs to be preheated for a few seconds, and then the anode and cathode of the lamp can start to discharge. If the lamp flashes or flashes continuously at the beginning of the ignition After the replacement of the new deuterium lamp, it is still the same. It is possible that the ignition circuit is faulty, and the high-power transistor used for lamp current adjustment is most likely to be damaged.
Disposal: need professional repair;
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