Sharp KB-3300JS Service Manual - Page 32

KB-3300JS KB-3300JK KB-3300JW Pin No. 37 38 40 41 42 43 44 45 46 47 Signal P17 P16 P14 P13 P12 P11 P10 P07 P06 P05 I/O OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT Description Bottom heater relay driving signal. To turn on and off relay(RYB). "H" level: During bottom heater relay ON. "L" level: During bottom heater relay OFF. Turminal not used. Door lock motor driving signal. To turn on and off relay(RY8). "H" level: During door lock motor ON. "L" level: During door lock motor OFF. Oven lamp (Oven) driving signal. To turn on and off relay(RY7). "H" level: During oven lamp ON. "L" level: During oven lamp OFF. Fan motor (Oven) driving signal. To turn on and off relay(RY6). "H" level: During fan motor ON. "L" level: During fan motor OFF. Fan motor (Drawer) driving signal. To turn on and off relay(RY5). "H" level: During fan motor ON. "L" level: During fan motor OFF. Top heater driving signal. To turn on and off relay(RY4). "H" level: During top heater ON. "L" level: During top heater OFF. Oven common relay driving signal. To turn on and off relay(RY3). "H" level: During oven common relay ON. "L" level: During oven common relay OFF. Oven lamp and stirrer motor driving signal. To turn on and off relay(RY1). "H" level: During oven lamp and stirrer motor ON. "L" level: During oven lamp and stirrer motor OFF. Magnetron high-voltage circuit driving signal. To turn on and off the cook relay(RY2). In 100% power operation, the signals holds "H" level during microwave cooking and "L" level while not cooking. In other cooking 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. ON H: +5V OFF L: GND ON ON ON ON ON ON ON H: +5V OFF L: GND H: +5V OFF L: GND H: +5V OFF L: GND H: +5V OFF L: GND H: +5V OFF L: GND H: +5V OFF L: GND H: +5V OFF L: GND VARI MODE 100% power 90% power 80% power 70% power 60% power 50% power 40% power 30% power 20% power 10% power 0% power 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. 48-52 P04-P00 OUT Used for initial balancing of the bridge circuit (absolute humidity sensor). 53 P57 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. 16.7 msec. During cooking H: +5V L: GND 54 P56 IN Signal coming from key unit. 55 TXD1 IN Signal coming from key unit. 56 RXD1 IN Signal coming from key unit. 30