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故障现象一：一台ＧＲ—１８４Ｅ东芝冰箱作制冷运行时，除霜指示灯微亮且冰箱温度达到停机温度时不能停机。故障分析：测试冷藏室温度传感器Ｒ（即热散电阻）是正常的。测主控板集成块Ｑ８０２（７５３３９）第７脚为２．２Ｖ；第６脚为２．４Ｖ；上限温度比较电压（第５脚）
Fault phenomenon 1: When a GR-184E Toshiba refrigerator is used for cooling operation, the defrost indicator light is bright and the refrigerator temperature cannot reach shutdown when it reaches the shutdown temperature. Failure Analysis: It is normal to test the temperature sensor R (ie, thermal resistance) of the refrigerator compartment. The main control board integrated block Q802 (75339) pin 7 is 2.2V; pin 6 is 2.4V; upper limit temperature comparison voltage (pin 5)