Sharp KB-3411JS Supplemental Service Manual page 21

Pin No. Signal I/O
48-52 P04-P00 OUT
53 P57 OUT
54 P56 IN
55 TXD1 IN
56 RXD1 IN
57 P53 IN
58 P52 OUT
59 P51 IN
60 INT0 IN
61 AVSS IN
62 VREF IN
63 AN7 IN
64 AN6 IN
the signals holds "H" level during microwave cook-
ing and "L" level while not cooking. In other cook-
ing modes (90%, 80%, 70%, 60%, 50%, 40%,
30%, 20%, 10%, 0%) the signal turns to "H" level
and "L" level in repetition according to the power
level.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
Common relays driving signal. (Square Waveform : 60Hz)
To turn on and off the shut-off relays (RY1 and
RY3). The square waveform voltage is delivered
to the relays (RY1 and RY3) driving circuit.
Signal coming from key unit.
Signal coming from key unit.
Signal coming from key unit.
To input signal which communicates the oven door open/close information to LSI.
Door open "H" level signal (+5V). Door close "L" level signal (GND).
Signal to sound buzzer.
A: Key touch sound.
B: Completion sound.
C: When the oven stops so that the food can be
checked in Automatic cooking mode.
Input signal which communicates the drawer door open/ close information to LSI.
Door opened; "H" level signal(+5V).
Door closed; "L" level signal(0V).
Signal to synchronize LSI with commercial power source frequency.
This is the basic timing for all real time processing of LSI.
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI.
Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to +5V.
AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the A/
D converter built into the LSI.
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built
into the LSI.
19
Description
VARI MODE
100% power
90% power
80% power
70% power
60% power
50% power
40% power
30% power
20% power
10% power
0% power
A
B
1.0 sec
C
KB-3411JS
KB-3411JK
KB-3411JW
Microwave cooking mode Other cooking mode
ON TIME OFF TIME ON TIME OFF TIME
32 sec. 0 sec. 60sec. 0ec.
30 sec. 2 sec. 54sec. 6sec.
26 sec. 6 sec. 48sec. 12sec.
24 sec. 8 sec. 42sec. 18sec.
22 sec. 10 sec. 36sec. 24sec.
18 sec. 14 sec. 30sec. 30sec.
16 sec. 16 sec. 24sec. 36sec.
12 sec. 20 sec. 18sec. 42sec.
8 sec. 24 sec. 12sec. 48sec.
6 sec. 26 sec. 4sec. 56sec.
0 sec. 32 sec. 0sec. 60sec.
16.7 msec.
H: +5V
L: GND
During cooking
H : +5V
L : GND
16.7 msec.
0.1 sec
2.0 sec
1.0 sec
H: +5V
L: GND