80
5-11. Key Scan and Display Circuit
5. Circuit Descriptions
1) Key Scan and display operation.
The model uses a decorder IC which 4 inputs and 9 outputs.
If the IC 9 decorder (TC4028BP) received signals from
MICOM pins (3 6), an output signal per 2 miliseconds
∼
comes out from Q3, Q41, Q8, Q6, Q9, Q7, Q0, Q2, and Q4
pin in sequence. This signal enters to a driver IC input
terminal of the CoolSelect ZoneTM PCB and IC5 (TD
62783AP), then approximate 11V peaks will generate from
an output terminal as shown on the next page.
Summary of Contents for RS277ACPN
Page 14: ...15 1 7 Dimensions of Refrigerator inches 1 Product Information...
Page 17: ...18 1 10 Cooling Air Circulation 1 Product Information Freezer Refrigerator...
Page 70: ...71 5 1 Block diagram 5 Circuit Descriptions Double Click...
Page 71: ...72 5 2 SCHEMATIC DIAGRAM 5 Circuit Descriptions Double Click...
Page 72: ...73 5 3 WIRING DIAGRAM 5 Circuit Descriptions Double Click...
Page 74: ...75 5 5 CONNECTOR ARRANGEMENT Main Board 5 Circuit Descriptions Double Click...
Page 87: ...88 5 17 Load Drive Circuit 5 Circuit Descriptions Double Click...
Page 92: ...93 6 Reference Information 6 2 Model name nomenclature...
Page 93: ...94 The End Thank you...