Sharp R-55TS Service Manual page 25

Pin No. Signal I/O
18 P50 OUT
19-20 P47-P46 OUT
21 P45 OUT
22 P44 OUT
23 INT1 IN
24 INT0 IN
25 P41 IN
26 P40 IN
27 RESET IN
28 P71 OUT
29 P70 OUT
30 XIN IN
31 XOUT OUT
32 VSS IN
33 P27 IN
34 P26 IN
35 P25 IN
Lower heater driving signal.
To turn on and off the lower heater relay (RY4).
"L" level during GRILL2 cooking or Bake cooking.
"H" level otherwise.
Terminal not used.
Micro and heater driving signal.
To turn on and off the relay(RY2). "L" level during
microwave cooking, grill 1 cooking, grill 2 cooking
or bake cooking condition. "H" level otherwise. In
microwave cooking mode, the signal turns to
"H"level and "L" level in repetition according to
the power level.
ON
Microwave cooking, Grill 1 cooking,
Grill 2 cooking or Bake cooking condition
Terminal not used.
Signal coming from encoder.
When the encoder is turned, the contacts of encoder make plus signals. And plus signals are
input into INT1.
Signal to synchronized LSI with commercial power source frequency(60Hz).
This is basic timing for time processing of LSI.
Signal coming from encoder.
Signal similar to INT1.Plus signals are input into P41.
Connected to VC.
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.
Timing signal output terminal for temperature measurement(OVEN THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Bake cooking)
Terminal not used.
Internal clock oscillation frequency input setting.
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 tact switch.
When any one of tact switches SW1, SW5, SW9, SW13 on switch unit matrix is touched, a
corresponding signal from P14-P17 will be input into P27. When no tact switch is touched,
the signal is held at "H" level.
Signal similar to P27.
When any one of tact switches SW2, SW6, SW10, SW14 on switch unit matrix is touched,
a corresponding signal will be input into P26.
Signal similar to P27.
When any one of tact switches SW3, SW7, SW11, SW15 on switch unit matrix is touched,
a corresponding signal will be input into P25.
23
Description
ON
(During Grill2 or Bake cooking)
ON/OFF time ratio in micro cooking
(a 32 second time base)
MICRO
COOK
100 %
70 %
50 %
OFF
30 %
H : GND
10 %
L
R-55TS
OFF
H : GND
L
ON OFF
32 sec. 0 sec.
24 sec. 8 sec.
18 sec. 14 sec.
12 sec. 20 sec.
6 sec. 26 sec.
H: GND
L(-5V)
16.7 msec.