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故障现象:一台HH300—Ⅰ型He—Ne激光血管内照射仪输出激光功率降低,工作五分钟后激光呈浅蓝色。分析与检修:接通电源,观察输出激光亮度不够强,用光导纤维管头(激光针)插入功率测试孔进行功率测试,输出功率显示值为0.95,根据维修经验,更换一只新的导光管测试功率最大值也只能达1.13,用无水乙醇擦洗激光输出口后观察输出激光亮度并没有增强。开机工作五分钟后发现输出的激光颜色由红色变为浅蓝色,测试输出功率为0.01。此故障现象为典型
Symptoms: a HH300-Ⅰ He-Ne laser endovascular laser output laser power reduction, after working five minutes the laser was light blue. Analysis and Maintenance: Turn on the power, observe the output laser brightness is not strong enough, with optical fiber tube (laser needle) into the power test hole power test, the output power display value of 0.95, according to the maintenance experience, replace a new light guide The maximum test tube power can only reach 1.13, with ethanol scrub laser output observed after the output laser brightness is not enhanced. Five minutes after turning on the machine, the output laser color changed from red to light blue, and the test output power was 0.01. This symptom is typical