Read Sharp R-22AMM (serv.man8) Service Manual online
R22AMM
8 – 2
10
AN2
IN
Temperature measurement input: MAGNETRON THERMISTOR TH2.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this input is converted into
temperature by the A/D converter built into the LSI.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this input is converted into
temperature by the A/D converter built into the LSI.
11
AN1
IN
Temperature measurement input: MAGNETRON THERMISTOR TH1.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this input is converted into
temperature by the A/D converter built into the LSI.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this input is converted into
temperature by the A/D converter built into the LSI.
12
AN0
-
Terminal not used.
13-14
P55-P54
-
Terminal not used.
15
P53
OUT
Magnetron (MG1) high-voltage circuit driving signal.
To turn on and off the cook relay. In 100% power level operation, “L” level during cooking; “H” level otherwise. In
other power level operation (50, 20 or 10%), “H” and “L” level is repeated according to power level.
To turn on and off the cook relay. In 100% power level operation, “L” level during cooking; “H” level otherwise. In
other power level operation (50, 20 or 10%), “H” and “L” level is repeated according to power level.
16
P52
-
Terminal not used.
17
P51
OUT
Magnetron (MG2) high-voltage circuit driving signal.
To turn on and off the cook relay. In 100% power level operation, “L” level during cooking; “H” level otherwise. In
other power level operation (50, 20 or 10%), “H” and “L” level is repeated according to power level.
To turn on and off the cook relay. In 100% power level operation, “L” level during cooking; “H” level otherwise. In
other power level operation (50, 20 or 10%), “H” and “L” level is repeated according to power level.
18
P50
-
Terminal not used.
19
P47
OUT
Signal to sound buzzer.
This signal is to control the 2.0kHz continuous signal.
A: Switch touch sound.
B: Completion sound.
This signal is to control the 2.0kHz continuous signal.
A: Switch touch sound.
B: Completion sound.
20-21
P46-P45
-
Terminal not used.
22
P44
OUT
Oven lamp, Blower motor and Antenna motor driving signal (Square Wave-form: 50Hz).
To turn on and off the shut-off relay (RY1). The Square
waveform voltage is delivered to the RY1 relay driving cir-
cuit and relays (RY3, RY4, COOK RELAY) control circuit.
To turn on and off the shut-off relay (RY1). The Square
waveform voltage is delivered to the RY1 relay driving cir-
cuit and relays (RY3, RY4, COOK RELAY) control circuit.
23
P43
-
Terminal not used.
24
P42
IN
Signal coming from encoder.
When the encoder is turned, the contacts of encoder make pulse signals. And pulse signals are input into P42.
When the encoder is turned, the contacts of encoder make pulse signals. And pulse signals are input into P42.
25
INT1
IN
Signal synchronized with commercial power source frequency.OFF
This is basic timing for all time processing of LSI.
This is basic timing for all time processing of LSI.
26
INT0
IN
Signal coming from encoder.
Signal similar to P42. Pulse signals are input into INT0.
Signal similar to P42. Pulse signals are input into INT0.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set to “L” level the moment
power is supplied, at this time the LSI is reset. Thereafter set at “H” level.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily set to “L” level the moment
power is supplied, at this time the LSI is reset. Thereafter set at “H” level.
28
P71
OUT
Memory (EEPROM) clock output.
29
P70
IN/OUT Memory (EEPROM) data input/output.
30
XIN
IN
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to XOUT terminal.
Pin No.
Signal
I/O
Description
GND
-5V
48 sec.
OFF
ON
Power level
ON
OFF
100%
48sec.
0sec.
50%
26sec. 22sec.
20%
12sec. 36sec.
10%
8sec. 40sec.
GND
-5V
48 sec.
OFF
ON
Power level
ON
OFF
100%
48sec.
0sec.
50%
26sec. 22sec.
20%
12sec. 36sec.
10%
8sec. 40sec.
A
B
0.12 sec
2.4 sec
GND
-5V
H
L
20 msec
During cooking
GND
-5V
20 msec.
OFF
ON
Click on the first or last page to see other R-22AMM (serv.man8) service manuals if exist.