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4. Display drive and Key Input Circuit
Display operation is dynamic scan drive type. It has 1/3 duty cycle.
Scan signal output : Port 21, Port 22, Port 23
TR1~TR6 : Scan signal drive circuit
R1~R7 : LED current limit resistance .(for 6 high current output port 12,13,15,16,17,18)
Port 19, Port 24 of IC4 : Key signal input by scan.
Oscillatory frequency is 8MHz. It is made up resonator oscillatory frequency.
Oscillatory wave is sine wave shape.
The remote control signal input is detacted at port 5 of IC4.
CE6 and CC8 : Noise protection parts
Содержание DWA-125R
Страница 1: ...Manual de Servicio Acondicionador de Aire Tipo Ventana Modelo DWA Y DWC 125R ...
Страница 11: ...10 3 WIRING DIAGRAM ...
Страница 13: ...12 5 CONTROL BLOCK DIAGRAM ...
Страница 14: ...13 6 CIRCUIT DIAGRAM ...
Страница 20: ...PCBDRIVINGDESCRIPTION ...
Страница 25: ...24 1 IC4 TMP87C809N MICOM 2 IC2 TNY264 SMPS SWITCH IC 8 KEY COMPONENTS OF ELECTRIC CIRCUIT ...
Страница 32: ...3 DWC 104R DWC 125R DWA 125R DWA 145R EXPLODED DIAGRAM ...
Страница 33: ...1 ...