Read Sharp R-96 (serv.man3) Service Manual online
R-953/963M - 20
1
AN0
IN
Terminal not used. (For only R-953(SL)M/(W)M)
1
AN0
IN
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. (For only R-963(SL)M/(W)M)
is an analog input terminal from the AH sensor circuit, and connected to the A/D
converter built into the LSI. (For only R-963(SL)M/(W)M)
2
P77
OUT
Timing signal output terminal for temperature measurement(OVEN
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
3
P76
OUT
Timing signal output terminal for temperature measurement(OVEN
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
4-5
P75-P74
OUT
Terminal not used.
6
P73
IN
Signal coming from touch key.
When any one of G9 line keys on key matrix is touched, a corresponding signal
from P10, P11, P12, P13, P14, P15, P16 and P17 will be input into P73. When no
key is touched, the signal is held at "L" level.
When any one of G9 line keys on key matrix is touched, a corresponding signal
from P10, P11, P12, P13, P14, P15, P16 and P17 will be input into P73. When no
key is touched, the signal is held at "L" level.
7
P72
IN
Signal similar to P73.
When any one of G10 line keys on key matrix is touched, a corresponding signal
will be input into P72.
When any one of G10 line keys on key matrix is touched, a corresponding signal
will be input into P72.
8
P71
IN
Signal similar to P73.
When any one of G11 line keys on key matrix is touched, a corresponding signal
will be input into P71.
When any one of G11 line keys on key matrix is touched, a corresponding signal
will be input into P71.
9
P70
IN
Signal similar to P73.
When any one of G12 line keys on key matrix is touched, a corresponding signal
will be input into P70.
When any one of G12 line keys on key matrix is touched, a corresponding signal
will be input into P70.
10-11
P57-P56
OUT
Terminal not used.
12
P55
OUT
Signal to sound buzzer.
A: key touch sound.
B: Completion sound.
C: When the temperature of the oven
A: key touch sound.
B: Completion sound.
C: When the temperature of the oven
cavity reaches the preset
temperature in the preheating mode,
or when the preheating hold time (30
minutes) is elapsed.
temperature in the preheating mode,
or when the preheating hold time (30
minutes) is elapsed.
13-17
P54-P50
OUT
Terminal not used. (For only R-953(SL)M/(W)M)
13-17
P54-P50
OUT
Used for initial balancing of the bridge circuit (absolute humidity sensor). (For only
R-963(SL)M/(W)M)
R-963(SL)M/(W)M)
18
P47
OUT
Terminal not used.
19
P46
IN
Input signal which communicates the damper open/close information to LSI.
Damper opened; "H" level signal (0V:GND).
Damper closed; "L" level signal (-5V:VC).
Damper closed; "L" level signal (-5V:VC).
20
P45
OUT
Terminal not used.
21
P44
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay
(RY2). In 100% operation, the
signals hold "L" level during
microwave cooking and "H" level
while not cooking. In other
cooking modes (70%, 50%, 30%,
10%) the signal turns to "H" level
and "L" level in repetition
according to the power level.
(RY2). In 100% operation, the
signals hold "L" level during
microwave cooking and "H" level
while not cooking. In other
cooking modes (70%, 50%, 30%,
10%) the signal turns to "H" level
and "L" level in repetition
according to the power level.
LSI(IXA034DR)
The I/O signal of the LSI(IXA034DR) are detailed in the following table.
The I/O signal of the LSI(IXA034DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
ON/OFF time ratio in Mi-
cro cooking
(a. 32second time base)
cro cooking
(a. 32second time base)
ON/OFF time ratio in Mi-
cro cooking
(a. 48second time base)
cro cooking
(a. 48second time base)
MICRO
ON
OFF
COOK
100%
32 sec.
0 sec.
70%
24 sec.
8 sec.
50%
18 sec. 14 sec.
30%
12 sec. 20 sec.
10%
6 sec. 26 sec.
MICRO
ON
OFF
COOK
100%
48 sec.
0 sec.
70%
36 sec. 12 sec.
50%
26 sec. 22 sec.
30%
16 sec. 32 sec.
10%
8 sec. 40 sec.
A
B
C
H: GND
L
0.12 sec
2.4 sec
1.2 sec
1.2 sec
DESCRIPTION OF LSI
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