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Istruzioni per l'uso Daewoo, Modello KOR-630A0A

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8. Display obviously jumps in time while counting down. 9. Display counts down noticeably too fast while cooking. 10. Display does not show the time of day when cancel button is touched. 11. Oven lamp and turntable motor do not stop although cooking is finished. Check if the RELAY 2 contacts close if they are close, replace touch control circuit. CONDITION CHECK Check rach pad for continuity of the membrane keyboard for the following key- board check procedure Malfunction of touch control circuit of control box sub-assembly RESULT Normal CAUSE REMEDY Replace con- trol box sub- assembly Malfunction of the membrane keyboard Abnormal Replace the membrane keyboard Display does not show programming at all, even if keyboard is touched. NOTE Before following the particular steps listed above in the trouble shooting guide for the membrane keyboard's, failure, please check for the continuity of each wire-harness between the membrane keyboard and P.C.B. assembly. 20 MEASUREMENT AND TEST 1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water exposed to the microwave as directed below. PROCEDURE 1. Microwave power output measurement is made with the microwave oven supplied at rated voltage and operated at its maximum microwave power setting with a load of 1000±5cc of potable water. 2. The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and an outside diameter of approximately 190 mm. 3. The oven and the empty vessel are at ambient temperature prior to the start of the test. The initial temperature of the water is 10±2°C (50±3.6°F) It is measured immediately before the water is added to the vessel. After addition of the water to the vessel, the load is immediately placed on the center of the shelf, which is in the lowest normal position. 4. Microwave power is switched on. 5. Heating time should be exactly A seconds. (Refer to table as following) Heating time is measured while the microwave generator is operating at full power. The filament heat-up time for magnetron is not included. 6. The initial and final temperature of water is selected so that the maximum difference between the ambient and final water temperature is 5K. 7. The microwave power output P in watts is calculated from the following formula : P=4187 X s T/t • s T is difference between initial and ending temperature. • It is the heating time. The power measured should be B (Refer to SPECIFICATIONS)W±10.0%. CAUTION : 1. Water load should be measured exactly to 1 liters. 2. Input power voltage should be exactly specified voltage(Refer to SPECIFICATIONS). 3. Ambient temperature should be 20±2°C(68±3.6°F) Heating time for power output: A(second) 70 64 60 56 52 49 47 44 42 40 38 B(W) 600 650 700 750 800 850 900 950 1000 1050 1100 21 2. MICROWAVE RADIATION TEST CAUTION : 1. Make sure to check the microwave leakage before and after ...

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