22
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
Summary of Contents for DWC104R010
Page 1: ...Manual de Servicio Acondicionador de Aire Tipo Ventana Modelo DWA Y DWC 125R...
Page 11: ...10 3 WIRING DIAGRAM...
Page 13: ...12 5 CONTROL BLOCK DIAGRAM...
Page 14: ...13 6 CIRCUIT DIAGRAM...
Page 20: ...PCBDRIVINGDESCRIPTION...
Page 25: ...24 1 IC4 TMP87C809N MICOM 2 IC2 TNY264 SMPS SWITCH IC 8 KEY COMPONENTS OF ELECTRIC CIRCUIT...
Page 32: ...3 DWC 104R DWC 125R DWA 125R DWA 145R EXPLODED DIAGRAM...
Page 33: ...1...
