18
R-120DB
R-120DK
R-120DR
R-120DW
26-27
P16-17
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2).
The signals holds "L" level during micro-
wave cooking and "H" level while not
cooking.
28-34
P50-P56
IN/OUT
Terminal not used.
35
P57
OUT
Oven lamp, fan motor and turntable motor driving signal.
To turn on and off shut off relay (RY1).
The square waveform voltage is deliv-
ered to the RY1 driving circuit and RY2
control circuit.
36-39
SEG15-SEG12
IN/OUT
Terminal not used.
40-51
SEG0-SEG11
OUT
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
LCD (Pin No.)
LSI signal (Pin No.)
LCD (Pin No.)
SEG 0 (51) .............................. S1
SEG 6 (45) ............................... S7
SEG 1 (50) .............................. S2
SEG 7 (44) ............................... S8
SEG 2 (49) .............................. S3
SEG 8 (43) ............................... S9
SEG 3 (48) .............................. S4
SEG 9 (42) ............................. S10
SEG 4 (47) .............................. S5
SEG 10 (41) ........................... S11
SEG 5 (46) .............................. S6
SEG 11 (40) ........................... S12
52
COM3
OUT
Terminal not used.
53
COM2
OUT
Common data signal:COM1.
Connected to LCD (Pin No. C3)
54
COM1
OUT
Common data signal:COM2.
Connected to LCD (Pin No. C2)
55
COM0
OUT
Common data signal:COM1.
Connected to LCD (Pin No. C1)
56
V3
IN
Connected to GND.
57-58
V1,V2
IN
Power source voltage input terminal.
Standard voltage for LCD.
59-60
C1-C0
IN/OUT
Terminal not used.
61
P30
OUT
Signal to sound buzzer (2.0 kHz).
A: tact switch touch sound.
B: Completion sound.
62-64
P31-P33
IN/OUT
Terminal not used.
Pin No.
Signal
I/O
Description
P-HI
H : GND
L : -5V
H : GND
L : -5V
P-70
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
16.7 msec.
During cooking
H : GND
L : -5V
A
B
0.1 sec.
2 sec.
H : GND
L : -5V
H : GND
L : -5V