Read Sharp R-652M Service Manual online
9
R-652M -
20.0 msec.
During cooking
H : GND
L : -5V
100P
H : GND
L : -5V
H : GND
L : -5V
70P
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
20.0 msec.
H : GND
L : -5V
(Grill or dual)
ON
OFF
During
cooking
L
GND
H.
15
P53
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,
RY2 and RY3 control circuit.
(RY1). The square waveform voltage
is delivered to the RY1 driving circuit,
RY2 and RY3 control circuit.
16
P52
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay
(RY3). 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.
(RY3). 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.
(ON and OFF times for other power level.)
17
P51
OUT
Grill heating element driving signal
To turn on and off the grill heating
element relay (RY2). "L" level during
grill cooking or dual cooking; "H" level
otherwise.
element relay (RY2). "L" level during
grill cooking or dual cooking; "H" level
otherwise.
18
P50
OUT
Terminal not used.
19
P47
OUT
Terminal not used.
20
P46
IN
Signal coming from touch key.
When either G12 line on key matrix is touched, a corresponding signal out
of P20 - P27 will be input into P46. When no key is touched, the signal is
held at "H" level.
of P20 - P27 will be input into P46. When no key is touched, the signal is
held at "H" level.
21
P45
IN
Signal similar to P46.
When either G11 line on key matrix is touched, a corresponding signal will
be input into P45.
be input into P45.
22
P44
IN
Signal similar to P46.
When either G10 line on key matrix is touched, a corresponding signal will
be input into P44.
be input into P44.
23
P43
IN
Signal similar to P46.
When either G9 line on key matrix is touched, a corresponding signal will be
input into P43.
input into P43.
24
INT0
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time
processing of LSI.
processing of LSI.
LSI(IZA954DR)
The I/O signal of the LSI(IZA954DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
25
P41
OUT
Terminal not used.
26
P40
IN
Connected to VC through the pull-down resistor R90.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
Temporarily set "L" level the moment power is applied, at this time the LSI is
reset. Thereafter set at "H" level.
Temporarily set "L" level the moment power is applied, at this time the LSI is
reset. Thereafter set at "H" level.
28-29
P71-P70
OUT
Terminal not used.
30
XIN
IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation
circuit with respect to XIN terminal.
circuit with respect to XIN terminal.
31
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
32
VSS
IN
Power source voltage: -5.0V.
VC voltage of power source circuit input.
DESCRIPTION OF LSI
Click on the first or last page to see other R-652M service manuals if exist.