Dacor PMOR3021B Service Manual

Also see for PMOR3021B: Use & care instructions Use & care installation instructions

Contents

Dacor PMOR3021B Service Manual Manual pdf 26 page image

24PMOR3021SPMOR3021BPMOR3021RDESCRIPTION OF LSILSIThe I/O signal of the LSI is detailed in the following table.Pin No. Signal I/O Description1-2 VL2-VL1 IN Power source voltage input terminal.Standard voltage for LCD.3-5 AN7-AN5 IN Terminal to change cooking input according to the Model.By using the A/D converter contained in the LSI, DC voltage in accordance with theModel in operation is applied to set up its cooking constant.6 AN4 IN Temperature measurement input: MAGNETRON THERMISTOR.By inputting DC voltage corresponding to thetemperature detected by the thermistor,this input is converted into temperature by the A/D converter built into the SLI.7 AN3 OUT Back light circuit (Light emitting diodes) driving signal.8 AN2 IN To input signal which communicates the door open/close information to LSI.Door close “H” level signal (0V). Door open “L” level signal (-5V).9 AN1 IN Humidity sensor input for R2120J.This input is an analog input terminal from the humidity sensor circuit, and connectedto the A/D converter built into the LSI.10 AN0 IN Used for initial balancing of the bridge circuit (humidity sensor). This input is an analoginput terminal from the humidity sensor circuit, and connected to the A/D converter builtinto the LSI for R-2120J.11 P57 OUT Oven lamp, fan motor stirrer motor and inverter unit driving signalTo turn on and off shut off relay (RY1). Thesquare waveform voltage is delivered to theRY1 driving circuit.12 P56 OUT Signal to sound buzzer (2.0 kHz).A: key touch sound.B: Completion sound.13 P50 OUT Terminal not used.14-18 P54-P50 OUT Used for initial balancing of the bridge circuit (humidity sensor) for R2120J.19 P47 OUT Power level data output signal for inverter unit.The power level will be decided by the time ratioof T1 and T2.20 P46 IN Signal coming from touch key.When either G1 line on key matrix is touched, a corresponding signal out of P20 - P27will be input into P46. When no key is touched, the signal is held at “H” level.21 P45 IN Signal similar to P46.When either G2 line on key matrix is touched, a corresponding signal will be input into P45.22 P44 IN Signal similar to P46.When either G3 line on key matrix is touched, a corresponding signal will be input into P44.23 P43 IN Signal similar to P46.When either G4 line on key matrix is touched, a corresponding signal will be input into P43.24 INT0 IN Signal synchronized with commercial power source frequency.This is the basic timing for time processing of LSI.AB0.1 sec.2.0 sec.H : GNDL : -5VH : GNDL : -5V16.7 msec.During cookingH : GNDL : -5V16.7 msec.T1 T2L : -5VH : GND16.7 msec.H : GNDL : -5V