Sharp R-950A Service Manual

R-950A
21
Pin No. Signal I/O Description
ON
OFF
H : GND
L
ON
OFF
During
cooking
L
GND
H.
(Convection)
A
B
C
H: GND
L
0.12 sec
2.4 sec
1.2 sec
1.2 sec
20 msec.
H : GND
L (-5V)
ON
OFF
During
cooking
L
GND
H.
(Grill)
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.
VARI MODE ON TIME OFF TIME
HIGH (100% power) 48 sec. 0 sec.
MED HIGH (approx. 70% power) 36 sec. 12 sec.
MED (approx. 50% power) 26 sec. 22 sec.
MED LOW (approx. 30% power) 16 sec. 32 sec.
LOW (approx. 10% power) 8 sec. 40 sec.
ON / OFF time ratio in Simul Convection
cooking or Simul Grill cooking (a 48
second time base)
ON / OFF time ratio in Microwave cook-
ing (a 32 second time base)
18 P50 OUT Damper motor relay driving signal.
To turn on and off shut-off relay(RY4).
19 P47 OUT Convection heater driving signal.
To turn on and off shut-off relay(RY3). "L" level
during convection cooking and during back up for
GRILL ; "H" level otherwise. During convection
cooking, the signal becomes "H" level when the
temperature of the oven cavity exceeds the pre-
determined temperature.
20 P46 OUT Segment data signals.
The relation between signals and indicators are as follows:
Signal Segment Signal Segment Signal Segment Signal Segment
P23 ............. P1 P16............. P6 P12 ...........P10 P06 ........... P14
P22 ............. P2 P15............. P7 P11 ...........P11 P05 ........... P15
P21 ............. P3 P14............. P8 P10 ...........P12 P04 ........... P16
P20 ............. P4 P13............. P9 P07 ...........P13 P46 ........... P17
P17 ............. P5
21 P45 OUT Terminal not used.
22 P44 OUT Grill heater driving signal.
To turn on and off shut-off relay(RY3). "L" level
during grill cooking; "H" level otherwise. During
grill cooking, the signal becomes "H" level when
the temperature of the oven cavity exceeds the
predetermined temperature.
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 tempera-
ture in the preheating mode, or when
the preheating hold time (30 min-
utes) is elapsed.
24 P42 OUT Timing signal output terminal for temperature measurement(OVEN THER-
MISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing.(Convection cooking and back up
for Grill)
25 INT1 IN Signal to synchronize LSI with commercial power source freqency.
This is the basic timing for all real time
processing of LSI.
26 P40 IN Connected to GND.
27 RST IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily
set to "L" level the moment power is applied, at this time the LSI is reset. Thereafter
set at "H" level.

Sharp R-950A Specifications

Power

ac line voltage	220 V
microwave frequency	2450 MHz
ac power required (microwave)	1.6 kW
ac power required (convection)	1.6 kW
ac power required (grill)	1.05 kW
ac power required (simul)	3.15 kW

Oven Specifications

oven capacity	41 litre
output power (microwave)	900 W
output power (convection heater)	1500 W
output power (grill heater)	1000 W

Weight and Dimensions

width	627 mm
height	378 mm
depth	492 mm
cavity width	410 mm
cavity height	245 mm
cavity depth	410 mm
weight	29 kg