Sharp R-230F, Руководство по обслуживанию

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R-230F
15
24 K00 IN Signal similar to K02.
When either G8 line on key matrix is touched, a corresponding signal will be input into
K00.
25 K01 IN Signal similar to K02.
When either G9 line on key matrix is touched, a corresponding signal will be input into
K01.
26 K02 IN Signal coming from touch key.
When either G10 line on key matrix is touched, a corresponding signal out of R00, R01,
R02, R03, P20 and P21 will be input into K02. When no key is touched, the signal is held
at “H” level.
27 K03 IN Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of
LSI.
28 COM0 OUT Common data signal: COM0.
Connected to LCD (Pin No. COM1)
29 COM1 OUT Common data signal: COM1.
Connected to LCD (Pin No. COM2)
30 COM2 OUT Common data signal: COM2.
Connected to LCD (Pin No. COM3)
31 COM3 OUT Terminal not used.
32-33 SEG0-SEG1 OUT Terminal not used.
34 SEG2 OUT Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds “L” level during microwave
cooking and “H” level while not cooking. In
other cooking modes (variable cooking) the
signal turns to “H” level and “L” level in
repetition according to the power level.
35 SEG3 OUT Terminal not used.
36 SEG4 OUT Oven lamp, fan motor and turntable motor driving signal.
To turn on and off shut off relay (RY1). The
square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
37-39 SEG5-SEG7 OUT Terminal not used.
40-51
SEG8-SEG19
OUT Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.) LCD segment LSI signal (Pin No.) LCD segment
SEG 8 (40) .................... SEG 12 SEG 14 (46) ..................... SEG 6
SEG 9 (41) .................... SEG 11 SEG 15 (47) ..................... SEG 5
SEG 10 (42) .................... SEG 10 SEG 16 (48) ..................... SEG 4
SEG 11 (43) .................... SEG 9 SEG 17 (49) ..................... SEG 3
SEG 12 (44) .................... SEG 8 SEG 18 (50) ..................... SEG 2
SEG 13 (45) .................... SEG 7 SEG 19 (51) ..................... SEG 1
52-53 VC1-VC2 IN Power source voltage input terminal.
Standard voltage for LCD.
54 VC3 OUT Terminal not used.
Pin No. Signal I/O Description
GND
-5V
20.0 msec.
H : GND
L : -5V
OFF
ON
ON
OFF
OFF
H : GND
L : -5V
Maximum
output
70% of maximum
output
24 sec. 8 sec.
20.0 msec.
During cooking
H : GND
L : -5V