Electrolux EI27MO45GSA, Техническое и сервисное руководство

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Troubleshooting and Testing
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VSS
XIN
XOUT
TEST
VDD
P21
RXD
RESET
P20
P00
P01
P02
AVDD
VREF
P10
P11
P12
AJN3
AJN4
AJN5
AJN6
AVSS
INTO
P31
P32
P33
TXD
P36
P37
IN
IN
OUT
IN
IN
OUT
IN
IN
OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
IN
OUT
OUT
Power source voltage : -5.0 Volts.
The power source voltage to the drive LSI is input to VSS terminal.
Internal clock oscillation frequency control input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with re-
spect to XOUT terminal.
Internal clock oscillation output. Output to control oscillation input to XIN.
Terminal to input the program to LSI
Power source voltage : GND (0 Volts)
Not Used
Terminal to input the program to LSI.
Auto clear terminal. Signal is input to reset the LSI to the initial state when power is ap-
plied. Temporarily set to “L” level the moment power is applied, at this time the LSI is reset.
Thereafter set at “H” level.
Not Used
Not Used
Not Used
Not Used
A/D converter power source voltage: GND (0 Volts) The power source voltage to drive
the A/D converter. Connected to GND.
Reference Voltage input terminal. A reference voltage applied to the A/D converter in the
LSI. Connected to GND. (0 Volts)
Oven lamp, fan motor and turntable motor driving
signal.
To turn on and off shut off relay. The
square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
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 cooking modes (variable
cooking) the signal turns to “H” level and ‘L” level in
repetition according to the power level.
Not Used
To input signal which communicates the door open/close information to LSI.
Door close “H” level signal (0V). Door Open “L” level -5V.
Not Used
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 bridge circuit (absolute humidity sensor). This input is an analog
input terminal from AH sensor circuit, and connected to the A/D converter built into the LSI.
A/D converter power source voltage : -5.0V. The power source voltage to drive the A/D
converter.
Signal synchronized with commercial power
source frequency.
This is the basic timing for
time processing of LSI.
Used for initial balancing of the bridge circuit absolute humidity sensor.
Used for initial balancing of the bridge circuit absolute humidity sensor.
Used for initial balancing of the bridge circuit absolute humidity sensor.
Terminal to input the program to LSI.
Used for initial balancing of the bridge circuit absolute humidity sensor.
Used for initial balancing of the bridge circuit absolute humidity sensor.
10.7 msec.
H: GND
L: -5V
During Cooking
H: GND
H: GND
L: -5V
L: -5V
OFF
OFF OFF
ON
ON
24 sec.
8 sec
Maximun
Output
70% Output
H: GND
L: -5V
16.7 msec
Pin# Signal I/O Description