Viking DMOC205SS, VMOC205SS service manual Tor

											DMOC205SS
											VMOC205SS
Pin No.	Signal	I/O	Description
18	P50	OUT	Damper motor relay driving signal.								H : GND
								OFF
			To turn on and off shut-off relay(RY4).	ON							L
19	P47	OUT	Heating element driving signal.
			To turn on and off shut-off relay(RY3). "L" level
			during convection cooking; "H" level otherwise.				During				H. GND
									OFF
			During convection cooking, the signal becomes "H"				cooking
					ON	(Convection)					L
			level when the temperature of the oven cavity
			exceeds the predetermined temperature.
20-21	P46-P45	OUT	Terminal not used.
22	P44	OUT	Timing signal output terminal for temperature measurement(OVEN THERMIS-
			TOR).
			"H" level (GND) : Thermistor OPEN timing.
			"L" level (-5V) : Temperature measuring timing.(Convection cooking)
23	P43	OUT	Signal to sound buzzer.								H
			A: key touch sound.	ß(60Hz)							L
										GND
			B: Completion sound.	P03						VP
				P02
			C: When the temperature of the oven	P01
			cavity reaches the preset temperature
				P00
				P37
			in the preheating mode, or when the	P36
			preheating hold time (30 minutes) is	P35
				P55
			elapsed.
24	P42	OUT	Timing signal output terminal for temperature measurement(OVEN).
			"H" level (GND) : Thermistor OPEN timing.
			"L" level (-5V) : Temperature measuring timing.(Convection cooking)
25	INT1	IN	Signal to synchronize LSI with commercial power source frequency.
			This is the basic timing for all real time								H : GND
			processing of LSI.
											L (-5V)
					16.7 msec.
26	P40	IN	Connected to GND.
27	RST	IN	Auto clear terminal.
			Signal is input to reset the LSI to the initial state when power is applied. Temporarily
			set to "L" level the moment power is applied, at this time the LSI is reset. Thereafter
			set at "H" level.
28/29	XCIN/XCOUT	OUT	Terminal not used.
30	XIN	IN	Internal clock oscillation frequency setting input.
			The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
			respect to XOUT terminal.
31	XOUT	OUT	Internal clock oscillation frequency control output.
			Output to control oscillation input of XIN.
32	VSS	IN	Power source voltage: -5V.
			VC voltage of power source circuit input.
33	P27	IN	Signal coming from touch key.
			When any one of G-1 line keys on key matrix is touched, a corresponding signal from
			P10 - P17 will be input into P27. When no key is touched, the signal is held at "L" level.
34	P26	IN	Signal similar to P27.
			When any one of G-2 line key on key matrix is touched, a corresponding signal will
			be input into P26.
35	P25	IN	Signal similar to P27.
			When any one of G-3 line key on key matrix is touched, a corresponding signal will
			be input into P25.
36	P24	IN	Signal similar to P27.
			When any one of G-4 line key on key matrix is touched, a corresponding signal will
			be input into P24.

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