Dacor DCM24B Service Manual page 29

DCM24B
DCM24R
DCM24S
Pin No. Signal
5 AN7
6 AN6
7-9 AN5-AN3
10 AN2
11 AN1
12 AN0
13 P55 OUT
14 P54 OUT
15 P53 OUT
16 P52 OUT
17 P51 OUT
I/O
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 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 Heating constant compensation terminal.
IN Input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal(0V).
Door opened; "L" level signal(-5V).
IN Input signal which communicates the damper open/close information to LSI.
Damper opened; "H" level signal(0V:GND).
Damper closed; "L" level signal(-5V).
IN Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the thermistor,
this input is converted into temperature by the A/D converter built into the LSI.
Digit selection signal.
The relationship between digit signal and digit are as follows;
Digit signal
P03 ........................... 1st.
P02 .......................... 2nd.
P01 ........................... 3rd.
P00 ........................... 4th.
P37 ........................... 5th.
P36 .......................... 6th.
P35 .......................... 7th.
P55 .......................... 8th.
Normally, one pulse is output in every ß
period, and input to the grid of the Fluores-
cent Display.
Oven lamp and turntable motor driving signal. (Square Waveform : 60Hz)
To turn on and off the shut-off relay(RY1).
The square waveform voltage is delivered to
the relay(RY1) driving circuit.
Convection motor driving signal.
To turn on and off shut-off relay(RY5). "L"
level during CONVECTION; "H" level other-
wise.
Cooling fan motor driving signal.
To turn on and off shut-off relay(RY6). "L"
level during both microwave and convection
cooking; "H" level otherwise.
Magnetron high-voltage circuit driving
signal.
To turn on and off the cook relay(RY2). In
P-HI operation, the signals holds "L" level
during microwave cooking and "H" level
while not cooking. In other cooking modes
(P-90, P-80, P-70, P-60, P-50, P-40, P-30,
P-20, P-10, P-0) the signal turns to "H"
level and "L" level in repetition according
to the power level.
Description
Digit
ß(60Hz)
P03
P02
P01
P00
P37
P36
P35
P55
VARI MODE
P-HI (100% power)
P-90 (approx. 90% power)
P-80 (approx. 80% power)
P-70 (approx. 70% power)
P-60 (approx. 60% power)
P-50 (approx. 50% power)
P-40 (approx. 40% power)
P-30 (approx. 30% power)
P-20 (approx. 20% power)
P-10 (approx. 10% power)
P-0 (0% power)
26
GND
VP
16.7 msec.
H
L
During cooking
H. GND
During
OFF
cooking
(Convection)
ON
L
H.
OFF
During
cooking
L
ON
ON TIME OFF TIME
32 sec.
30 sec.
26 sec.
24 sec.
22 sec.
18 sec.
16 sec.
12 sec.
8 sec.
6 sec.
0 sec.
H
L
GND
0 sec.
2 sec.
6 sec.
8 sec.
10 sec.
14 sec.
16 sec.
20 sec.
24 sec.
26 sec.
32 sec.