Read Sharp R-890SLM Service Manual online
R-890SLM
5 - 3
3. MICROWAVE AND BOTTOM GRILL (Figure O-5c)
Press MIX button 3 times. And enter the desired cooking time
by rotating the ENCODER dial. And press MICRO POWER
button to set the desired microwave power. When the INSTANT
COOK/START button is touched, the following operations occur:
1. The numbers on the digital readout start the count down to zero.
2. The oven lamp, cooling fan motor and turntable motor are
1. The numbers on the digital readout start the count down to zero.
2. The oven lamp, cooling fan motor and turntable motor are
energized.
3. The relay RY4 is energized and the main supply voltage is
3. The relay RY4 is energized and the main supply voltage is
applied to the bottom grill heating element.
4. The relay RY2 is energized and the microwave energy is
generated by magnetron.
5. Now, the food is cooked by microwave and bottom grill simul-
taneously.
POWER OUTPUT
ON TIME
OFF TIME
100%
54 sec.
0 sec.
90%
49 sec.
5 sec.
80%
45 sec.
9 sec.
70%
40 sec.
14 sec.
60%
36 sec.
18 sec.
50%
29 sec.
25 sec.
40%
24 sec.
30 sec.
30%
18 sec.
36 sec.
20%
13 sec.
41 sec.
10%
9 sec.
45 sec.
[6] ON/OFF TIME RATIO
In grill cooking, convection cooking or combi cooking, the top
heater, bottom heater or magnetron operate within a 54 second
time base. The following table is the ON / OFF time ratio at each
power output of the top heaters, bottom heater or magnetron.
[7] AUTO POWER CONTROL OPERATION
The magnetron, top or bottom heating elements, the fan motor or the convection motor will operate in accordance with following
specification.
1. OUTPUT POWER CONTROL (MANUAL COOK)
OPERATION MODE
DEVICE
POWER CONTROL
MICROWAVE (100%)
SINGLE OPERATION
Microwave
100% 20min, then 70%
TOP GRILL (100%)
SINGLE OPERATION
Top heater
100% 15min, then 50%
BOTTOM GRILL (100%)
SINGLE OPERATION
Bottom heater
100% 15min, then 50%
TOP(100%)/BOTTOM(100%)
Top heater
100% 6min then 70% and 70% 9min then 50%
COMBI OPERATION
Bottom heater
100% 6min then 70% and 70% 9min then 50%
MICRO(100%)/TOP GRILL(100%)
Microwave
100% 20min, then 70%
COMBI OPERATION
Top heater
100% 15min, then 50%
MICRO(70 - 10%)/TOP GRILL(100%)
Microwave
-
COMBI OPERATION
Top heater
100% 15min, then 50%
MICRO(100%)/BOTTOM GRILL(100%)
Microwave
100% 20min, then 70%
COMBI OPERATION
Bottom heater
100% 15min, then 50%
MICRO(70 - 10%)/BOTTOM GRILL(100%)
Microwave
-
COMBI OPERATION
Bottom heater
100% 15min, then 50%
Repeat Cook
Microwave
Top heater
Bottom heater
In case same cooking mode is repeated within 1min 15sec
(including stop, end), oven calculates total cooking time and
reduce the power level.
2. OUTPUT POWER CONTROL (AUTO COOK)
OPERATION MODE
DEVICE
POWER CONTROL
Repeat Auto Cook
Microwave
The power level is not reduced 1 time cooking. But only in
case same menu is repeated within 1min 15sec, the power
level of micro and grill is reduced from 100% to 70% in 20mins
after starting of last cooking. (Even if the time of the last cook-
ing is longer than 20mins, the power level isn’t reduced on the
last cooking, and it is reduced from the beginning of the next
cooking.) However, in time calculated from the start of the 1st
cooking, even if the Cook mode changed, when repetition
cooking of the menu with which 100% of top & bottom heaters
continues are performed, as shown in the following table, the
power down of the cooking of the 2nd henceforth is carried
out. (The 1st cooking is not applied)
Service_R-890SLM.indd 9
4/25/09 10:54:57 AM
Click on the first or last page to see other R-890SLM service manuals if exist.