Sharp R-990KS User Manual

R990K(W)
9 – 2
13 P55 OUT
Digit selection signal.
The relationship between digit signal and digit are as fol-
lows;
Digit signal Digit
P02..........................2nd.
P03...........................1st.
P01...........................3rd.
P00...........................4th.
P37...........................5th.
P36.......................... 6th.
P35.......................... 7th.
P55.......................... 8th.
Normally, one pulse is out put in every speriod, and input to
the grid of the Fluorescent Display.
14 P54 OUT
Oven lamp and turntable motor driving signal. (Square Waveform : 50Hz)
To turn on and off the shut-off relay(RY1). The square waveform volt-
age is delivered to the relay(RY1) driving circuit.
15 P53 OUT
Convection motor driving signal.
To turn on and off shut-off relay(RY5). "L" level during CONVECTION;
"H" level otherwise.
16 P52 OUT
Cooling fan motor driving signal.
To turn on and off shut-off relay(RY6). "L" level during both micro-
wave and convection cooking; "H" level otherwise.
17 P51 OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay(RY2). In HIGH opera-
tion, the signals holds "L" level during microwave cook-
ing and "H" level while not cooking. In other cooking
modes (MED HIGH, MED, MED LOW, LOW) the signal
turns to "H" level and "L" level in repetition according to
the power level.
18 P50 OUT
Damper motor relay driving signal.
To turn on and off shut-off relay(RY4).
19 P47 OUT
Heating element driving signal.
To turn on and off shut-off relay(RY3). "L" level during convection cook-
ing; "H" level otherwise. During convection cooking, the signal
becomes "H" level when the temperature of the oven cavity exceeds
the predetermined temperature.
20-21 P46-P45 OUT Terminal not used.
22 P44 OUT
Timing signal output terminal for temperature measurement(OVEN THERMISTOR).
H level (GND) : Thermistor OPEN timing.
L level (-5V) : Temperature measuring timing.(Convection cooking)
23 P43 OUT
Signal to sound buzzer.
A: key touch sound.
B: Completion sound.
C: When the temperature of the oven cavity reaches the preset
temperature in the preheating mode, or when the preheating
hold time (30 minutes) is elapsed.
24 P42 OUT
Timing signal output terminal for temperature measurement(OVEN).
H level (GND) : Thermistor OPEN timing.
L level (-5V) : Temperature measuring timing.(Convection cooking)
Pin No. Signal I/O Description
P03
ß(50H z)
H
L
GND
VP
P02
P01
P00
P37
P36
P35
P55
During cooking
L
H
20 ms ec.
ON
OFF
During
cooking
L
GND
H.
(Convection)
ON
OFF
During
c ooking
L
GND
H.
VARI MODE ON TIME OFF TIME
HIGH (100% power) 32 sec. 0 sec.
MED HIGH (approx. 70% power) 24 sec. 8 sec.
MED (approx. 50% power) 18 sec. 14 sec.
MED LOW (approx. 30% power) 12 sec. 20 sec.
LOW (approx. 10% power) 6 sec. 26 sec.
ON
OFF
H:GND
L
ON
OFF
During
c ooking
L
GND
H.
(C onvection)
A
B
C
H: G ND
L
0.12 sec
2.4 sec
1.2 sec
1.2 sec

Sharp R-990KS Specifications

General

Brand	Sharp
Model	R-990KS
Category	Microwave Oven
Language	English