Service manual

20
KB-3401LS
KB-3401LK
KB-3401LW
23 P30 OUT Signal to reset LSI.
Signal is output to reset IC-2, IC-3 and IC-4.
24 - 27
COM3 - COM0 OUT Terminal not used.
28 VL3 IN Connected VC (+5V).
29 - 34 P27- P22 OUT Terminal not used.
35 P21 OUT Terminal not used.
36 P120 OUT
Convection heater relay driving signal.
To turn on and off relay(RYC).
“H” level: During convection heater relay ON.
“L” level: During convection heater relay OFF.
37 P17 OUT 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.
38 P16 OUT Cook top warmer driving signal.
To turn on and off relay(RY10).
“H” level: During cook top warmer ON.
“L” level: During cook top warmer OFF.
39 P15 OUT Oven convection motor driving signal.
To turn on and off relay(RY9).
“H” level: During convection motor ON.
“L” level: During convection motor OFF.
40 P14 OUT 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.
41 P13 OUT Oven lamp (Oven) driving signal.
To turn on and off relay(RY7).
“H” level: During oven lamp ON.
“L” level: During oven lamp OFF.
42 P12 OUT Fan motor (Oven) driving signal.
To turn on and off relay(RY6).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
43 P11 OUT Fan motor (Drawer) driving signal.
To turn on and off relay(RY5).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
44 P10 OUT Top heater driving signal.
To turn on and off relay(RY4).
“H” level: During top heater ON.
“L” level: During top heater OFF.
45 P07 OUT 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.
46 P06 OUT 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.
47 P05 OUT Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay(RY2). In 100% power operation,
Pin No. Signal I/O Description
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V