Lexmark X7500 Service Manual - Page 136
DADF Controller Card Assembly ´ DADF Document In Sensor ´ PWBA Size ´ DADF LED PWD, Sensor
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4036-501 DADF Controller Card Assembly ↔ DADF Document In Sensor ↔ PWBA Size ↔ DADF LED PWD Signal name *EMPTY EMPTY A *HABA4 S *HABA3 S *HABA2 S *HABA1 S LED1 Description Detects paper setting. 5V= not ready, 0V= ready Supplies the power from 5V terminal through the current limiter to the LED on the DADF paper present sensor (photo-transistor type). Normally on. Detects the paper size. 5V= proper paper is not loaded. 0V= proper paper loaded. Detects the paper size. 5V= proper paper is not loaded. 0V= Proper paper is loaded. Detects the paper size. 5V= proper paper is not loaded. 0V= proper paper is loaded. Detects the paper size. 5V= proper paper is not loaded. 0V= proper paper is loaded. Supplies the power through the current limiter to light the LED of the DADF LED PWD. Whenever the LED lights, this turns on. 5-10 Service Manual