Sharp KB-5121KS Service Manual page 30

KB-5121KS/K/W
Pin No. Signal
90 AN6
91 AN5
92 AN4
93 AN3
94 AN2
95 AN1
96 AVSS
97 AN0
98 VREF
99 AVCC
100 P97
I/O
"L" level: During fan motor OFF.
IN 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.
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.
IN Terminal to change the specifications of the LSI.
By using A/D converter contained in the LSI, DC voltage in accordance wityh the Model
in operation is applied to set up its cooking constant.
IN Input signal which inform the drawer door is in the middle position between the opened
position and the closed position, to LSI from the door position switch rear.
IN Input signal which communicates the oven door locked information to LSI.
Door unlocked; "H" level signal(+5V).
Door locked; "L" level signal(0V).
IN Input signal which communicates the oven door unlocked information to LSI.
Door locked; "H" level signal(+5V).
Door unlocked; "L" level signal(0V).
IN A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI.
IN Terminal not used.
IN Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to +5V.
IN A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to Vcc1 (+5V).
OUT 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.
Description
28
16.7 msec.
H: +5V
L: GND
During cooking