Sharp R-6R50 Service Manual page 15

16
17
18
19
20
21
P42
P41
ae
P37
P36
P34
OUT
OUT
OUT
OUT
Key strobe signal.
otherwise.
Cooling fan motor driv
To turn on and off shut-off relay (RY4).
"H" level otherwise.
Grill heating element driving signat.
To turn on and off the gril! heater relay (RY3),
____, During
cooking
{Gril
ing signal.
4" Javel during GRILL; "H" level
"L" level during both microwave and grill
* GRILLIKG; The cooling fan motor relay is designed to turn off 1 min. later than the
grill relay.
Terminal not used.
Surge limiting relay dri
During oh a
ving signal.
The surge limiting relay is designed to turn on 15 msec. earlier than the cook relay (RY2).
Terminal not used.
Terminal not used.
200msec.
$$$ $a}
Signal applied to touch-key section.
A pulse signal is input to RO —R3 terminal while one of G-8 line keys on key matrix
is touched.
Key strobe signal.
Signal applied to touct 1-key section.
A pulse signal is input to RO —R3 terminal while one of G 7 line keys on key matrix
is touched.
Key strobe signal.
Signal applied to touch-key section.
A pulse signal is input to RO —R3 terminal while ane of G-6 line keys on key matrix
is touched.
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R-6R50(W)/(B)
R-6G5O(W)/{B
R-6G52(W)/(B
R-6R7D(W)/(B)
San
22 P33 OUT
23 P32 OUT
24 P3i
Key strobe signal.
Signal applied to touch-key section.
A pulse signal is input to RO —R3 terminal while one of G-5 line keys on key matrix
is touched,
Signal to sound buzzer.
A : Key touch sound.
B : Completion sound.
C : When a stage finishes for Compu Cook.
0.1 sec.
Signal synchronized with commercial power source frequency.
This is the basic timing for all time processing of LSI.
Auto-clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied.
Temporarily set to "'L"' level the moment power is supplied, at this time the LS! is reset.
Thereafter set at ee level.
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation cireult with .
respect to XOUT terminal.
Internal clock oscillation frequency. control output.
Output to control osillation input of XIN.
Terminal not used.
Power source voltage: —5V.
VC voltage of power source circuit input.
Terminal not used.
Signal coming from touch-key.
When either one of G-1 line keys on key aati is touched, a corresponding signal out of -
P33 — P36 will be input into R3.
When no key i is touched, the signal is held at ''L" level.
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