Sharp R-320CD Service Manual page 25

Pin No. Signal I/O
23 P24 OUT
24 P25 OUT
25-26 P26-P27 OUT
27-29 P30-P32 OUT
30-34 P33-P37 OUT
35 CVCC IN
36 VSS IN
37-38 V3-V2 IN
39-40 V1-V0 IN
41 VCC IN
42 COM4 OUT
43 COM3 OUT
44 COM2 OUT
45 COM1 OUT
46-54 OUT
SEG1-SEG9
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.
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cook-
ing 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.
Terminal not used.
Terminal not used.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
Connected to GND.
Power source voltage: -5.0V.
The power source voltage to the LSI is input to VSS terminal. Connected to VC.
Power source voltage input terminal.
Standard voltage for LCD.
Power source voltage input terminal.
Standard voltage for LCD. Connected to GND.
Power source voltage: GND (0V).
The power source voltage to drive the LSI is input to VCC terminal.
Terminal not used.
Common data signal: COM2.
Connected to LCD signal COM2.
Common data signal: COM1.
Connected to LCD signal COM1.
Common data signal: COM0.
Connected to LCD signal COM0.
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
SEG 1 (46) ................................ SEG 0
SEG 2 (47) ................................ SEG 1
SEG 3 (48) ................................ SEG 2
SEG 4 (49) ................................ SEG 3
SEG 5 (50) ................................ SEG 4
SEG 6 (51) ................................ SEG 5
SEG 7 (52) ................................ SEG 6
SEG 8 (53) ................................ SEG 7
SEG 9 (54) ................................ SEG 8
SEG 11 (56) ................................ SEG 9
SEG 12 (57) ............................... SEG 10
SEG 13 (58) ............................... SEG 11
SEG 14 (59) ............................... SEG 12
SEG 15 (60) ............................... SEG 13
SEG 16 (61) ............................... SEG 14
SEG 17 (62) ............................... SEG 15
SEG 18 (63) ............................... SEG 16
SEG 19 (64) ............................... SEG 17
Description
P-HI
P-70
(ON and OFF times for other power level.)
LCD (Pin No.) LSI signal (Pin No.)
SEG 20 (65) .............................. SEG 18
SEG 21 (66) .............................. SEG 19
SEG 22 (67) .............................. SEG 20
SEG 23 (68) .............................. SEG 21
SEG 24 (69) .............................. SEG 22
SEG 25 (70) .............................. SEG 23
SEG 26 (71) .............................. SEG 24
SEG 27 (72) .............................. SEG 25
SEG 28 (73) .............................. SEG 26
SEG 29 (74) .............................. SEG 27
SEG 30 (75) .............................. SEG 28
SEG 31 (76) .............................. SEG 29
SEG 32 (77) .............................. SEG 30
SEG 33 (78) .............................. SEG 31
SEG 34 (79) .............................. SEG 32
SEG 35 (80) .............................. SEG 33
SEG 36 (81) .............................. SEG 34
SEG 37 (82) .............................. SEG 35
23
16.7 msec.
H : GND
L : -5V
During cooking
OFF
H : GND
ON
L : -5V
OFF OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
LCD (Pin No.)
R-320CD/CK/CW
R-330CK/CW