Sharp Carousel R-930AK Servis Kılavuzu - Sayfa 25

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Sharp Carousel R-930AK Servis Kılavuzu
Pin No.
Signal
I/O
17
P51
OUT
18
P50
OUT
19
P47
OUT
20-21
P46-P45
OUT
22
P44
OUT
23
P43
OUT
24
P42
OUT
25
INT1
IN
26
P40
IN
27
RST
IN
28/29
OUT
XCIN/XCOUT
30
XIN
IN
31
XOUT
OUT
32
VSS
IN
33
P27
IN
Magnetron high-voltage circuit driving
signal.
To turn on and off the cook relay(RY2). In
P-HI operation, the signals holds "L" level
during microwave cooking and "H" level
while not cooking. In other cooking modes
(P-90, P-80, P-70, P-60, P-60, P-50, P-40,
P-30, P-20, P-10, P-0) the signal turns to
"H" level and "L" level in repetition accord-
ing to the power level.
Damper motor relay driving signal.
To turn on and off shut-off relay(RY4).
Heating element driving signal.
To turn on and off shut-off relay(RY3). "L" level during
convection cooking; "H" level otherwise. During con-
vection cooking, the signal becomes "H" level when
the temperature of the oven cavity exceeds the
predetermined temperature.
Terminal not used.
Timing signal output terminal for temperature measurement(OVEN THERMIS-
TOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing.(Convection cooking)
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.
Timing signal output terminal for temperature measurement(OVEN).
"H" level (GND) : Ttermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing.(Convection cooking)
Signal to synchronize LSI with commercial power source freqency.
This is the basic timing for all real time
processing of LSI.
Connected to GND.
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.
Terminal not used.
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XOUT terminal.
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
Power source voltage: -5V.
VC voltage of power source circuit input.
Signal coming from touch key.
When any one of G-1 line keys on key matrix is touched, a corresponding signal from
P17 - P17 will be input into P27. When no key is touched, the signal is held at "L" level.
23
Description
VARI MODE
P-HI (100% power)
P-90 (approx. 90% power)
P-80 (approx. 80% power)
P-70 (approx. 70% power)
P-60 (approx. 60% power)
P-50 (approx. 50% power)
P-40 (approx. 40% power)
P-30 (approx. 30% power)
P-20 (approx. 20% power)
P-10 (approx. 10% power)
P-0 (0% power)
ON
(Convection)
ON
0.1 sec
A
2.0 sec
B
1.0 sec
C
16.7 msec.
R-930AK
R-930AW
ON TIME
OFF TIME
32 sec.
0 sec.
30 sec.
2 sec.
26 sec.
6 sec.
24 sec.
8 sec.
22 sec.
10 sec.
18 sec.
14 sec.
16 sec.
16 sec.
12 sec.
20 sec.
8 sec.
24 sec.
6 sec.
26 sec.
0 sec.
32 sec.
H : GND
OFF
L
H.
GND
During
OFF
cooking
L
1.0 sec
H: GND
L
H : GND
L (-5V)