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1,故障现象sF30型液力叉车驾驶棚后侧配备的组合灯,由制动、示宽、倒车、转向4种指示灯组成。1台该型叉车在使用了一段时间后,在前进状态下制动时,出现制动灯和倒车灯同时点亮,且倒车蜂鸣器鸣叫现象。2.故障排查制动灯、倒车灯及倒车蜂鸣器电路图如图1所示。该叉车额定工作电压为直流12V,其后组合灯中4种灯的电源线相互独立,互不影响,初步分析故
1, Fault phenomenon sF30 type hydraulic forklift cockpit with the combination of the rear of the rear lights, brake, show width, reversing, steering 4 kinds of lights. When this type of forklift truck is in use for some time, the brake light and the backup light are on at the same time when the brake is in the forward state, and the buzzer buzzer sounds. 2. Troubleshooting Brake lights, reversing lights and reversing buzzer circuit shown in Figure 1. The rated working voltage of the forklift DC12V, then the combination of four lights in the lamp power lines are independent of each other, without affecting the preliminary analysis