Read Sharp R-234 (serv.man2) Service Manual online
R-234 - 19
1-12
SEG0 -
OUT
Segment data signal.
SEG11
Connected to LCD.
The relation between signals are as follows:
The relation between signals are as follows:
LSI signal (Pin No.)
LCD segment
LSI signal (Pin No.) LCD segment
SEG 0 (1) ................................ S6
SEG 6 (7) ........................... S12
SEG 1 (2) ................................ S7
SEG 7 (8) ............................. S5
SEG 2 (3) ................................ S8
SEG 8 (9) ............................. S4
SEG 3 (4) ................................ S9
SEG 9 (10) ........................... S3
SEG 4 (5) .............................. S10
SEG 10 (11) ......................... S2
SEG 5 (6) .............................. S11
SEG 11 (12) ......................... S1
13
R60
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW4 is touched.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW4 is touched.
14
R61
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW3 is touched.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW3 is touched.
15
R62
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW2 is touched.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW2 is touched.
16
R63
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW1 is touched.
Signal applied to tact switch section. A pulse signal is input to R81 terminal while
the tact switch SW1 is touched.
17
AIN0
IN
To input signal which communicates the door open/close information to LSI.
Door close "L" level signal (0V). Door open "H" level (+5V)
Door close "L" level signal (0V). Door open "H" level (+5V)
18-20
AIN1-AIN3
IN
Terminal to change functions according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the
Model in operation is applied to set up its function.
By using the A/D converter contained in the LSI, DC voltage in accordance with the
Model in operation is applied to set up its function.
21
VSS
IN
Power source voltage: 0V.
VSS voltage of power source circuit input.
VSS voltage of power source circuit input.
22
R70
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 cook-
ing modes (variable cooking) the sig-
nal turns to "H" level and "L" level in
repetition according to the power level.
(RY2). The signals holds "L" level
during microwave cooking and "H"
level while not cooking. In other cook-
ing modes (variable cooking) the sig-
nal turns to "H" level and "L" level in
repetition according to the power level.
23
R71
OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
24
R72
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.
square waveform voltage is delivered to
the RY1 driving circuit.
25
R73
IN
Signal coming from encoder.
When the encoder is turned, the contacts of encoder make pulse signals. And
pulse signals are input into R73.
When the encoder is turned, the contacts of encoder make pulse signals. And
pulse signals are input into R73.
26
INT2
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
DESCRIPTION OF LSI
LSI(IXA084DR)
The I/O signal
The I/O signal
of the LS
I(IXA084DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
HIGH
H : +5V
L : 0V
H : +5V
L : 0V
MEDIUM
HIGH
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
A
B
0.1 sec.
2 sec.
H : +5V
L: 0V
H : +5V
L: 0V
20.0 msec
During cooking
H : +5V
L : 0V
20.0 msec
H : +5V
L : 0V
Click on the first or last page to see other R-234 (serv.man2) service manuals if exist.