R-98STMA (serv.man5). Operation Sequence - Sharp Home Appliance Service Manual (repair manual). Page 2

R98STMAA

5 – 2

In this condition the food is cooked by the grill heating element . Pro-
gramme the desired cooking time by touching the TIME keys and
touch the GRILL key once. When the START key is touched, the fol-
lowing 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 ener-

gized. 

3. The relay RY3 is energized and the main supply voltage is applied

to the top grill heating elements.

4. Now, the food is cooked by the top grill heating elements.

NOTE: The convection cooking condition will be carried out simulta-

neously until the temperature of the oven cavity rise to 220

°C.

°C - 130°C)

Programme the desired convection temperature of 40

°C - 130°C by

touching CONVECTION key. When the START key is touched, the fol-
lowing operations occur:

1. The relays RY1, RY6 and RY7 are energized, the oven lamp, turn-

table motor, fan motor and convection motor are turned on.

2. The relay RY4 is energized and the main supply voltage is applied

to the convection heating element.

3. After the temperature of oven cavity rises to the selected one, the

oven will continue to turned the convection heating element on and
off to maintain the temperature for 30 minutes.:

°C - 250°C)

Programme the desired convection temperature of 160

°C - 250°C by

touching CONVECTION key. When the START key is touched, the fol-
lowing operations occur:

1. The relays RY1, RY6 and RY7 are energized, the oven lamp, turn-

table motor, fan motor and convection motor are turned on.

2. The relay RY4 and RY3 are is energized and the main supply volt-

age is applied to the convection heating element and the grill heat-
ing elements.

3. After the temperature of oven cavity rises to the selected one, the

oven will continue to turned the convection heating element on and
off to maintain the temperature for 30 minutes. And simultaneously
the grill heating element will be operated at 10% power output.

°C)

Programme the cooking time by touching TIME keys. And then pro-
gramme the convection temperature of 250

°C by touching CONVEC-

TION key. When the START key is touched, the following operations
occur:

1. The relays RY1, RY6 and RY7 are energized, the oven lamp, turn-

table motor, fan motor and convection motor are turned on.

2. The relay RY4 and RY3 are energized and the main supply voltage

is applied to the convection heating element and the grill heating
elements.

3. The oven will continue to turn the convection heating element on

and off to maintain the temperature for the programmed cooking
time. And simultaneously the grill heating elements will be operated
at 10% power output.

°C - 230°C)

Programme the cooking time by touching TIME keys. And then pro-
gramme the desired convection temperature of 40

°C 230°C by touch-

ing CONVECTION key. When the START key is touched, the following
operations occur:

1. The relays RY1, RY6 and RY7 are energized, the oven lamp, turn-

table motor, fan motor and convection motor are turned on.

2. The relay RY4 is energized and the main supply voltage is applied

to the convection heating element. 

3. The oven will continue to turn the convection heating element on

and off to maintain the temperature for the programmed cooking
time.

Programme the desired cooking time by touching the TIME keys.
Touch the COMBI. key once. Select the microwave power level by
touching the MICRO. POWER key. And select the convection temper-
ature by touching the CONVECTION key.

NOTE: The 100% microwave power level can not be selected.

When the START key is touched, the following operations occur:

1. The numbers on the digital read-out start the count down to zero.

2. The oven lamp, fan motor, turntable motor and convection motor

are energized.

3. The relay RY4 will be energized and the main supply voltage is

applied to the convection 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 convection energy

simultaneously.

Programme the desired cooking time by touching the TIME keys.
Touch the COMBI. key twice. Select the microwave power level by
touching the MICRO. POWER key. When the START key is touched,
the following operations occur:

1. The numbers on the digital read-out start the count down to zero.

2. The oven lamp, fan motor and turntable motor are energized.

3. The relay RY3 is energized and the main supply voltage is applied

to the grill heating elements.

4. The relay RY2 is energized and the microwave energy is generated

by magnetron.

5. Now, the food is cooked by microwave and grill simultaneously.

In grill cooking, convection cooking or dual cooking, the grill heating
elements or magnetron operate within a 54 second time base. The fol-
lowing table is the ON / OFF time ratio at each power output of the grill
heating element or magnetron.

Auto Cook functions automatically work out the correct cooking mode
and cooking time and/or cooking temperature. They will cook accord-
ing to the special cooking sequence.

POWER OUTPUT

ON TIME

OFF TIME

100%

54 sec.

0 sec.

70%

40 sec.

14 sec.

50%

29 sec.

25 sec.

30%

18 sec.

36 sec.

10%

9 sec.

45 sec.