Service manual

Epson AcuLaser CX-11N/AcuLaser CX-11NF Field Repair Guide 9/9/05
Printer Component, Software Item, LCD Display, Printer Button Page 35.
Scanner Sensors
ADF/Document Cover Open Sensor (Not Referenced in the PPL)
Detects the open/close status of the Document Cover (CX-11N) or the ADF Assembly (CX-11NF). It is attached to
the underside of the Scanner’s upper case front right corner. If the Document Cover (CX-11N) or the ADF Assem-
bly (CX-11NF) is opened while the scanner is in standby mode, the Scanner Lamp is turned on and the Carriage
Unit moves to its home position. If the sensor is defective, replace the entire Scanner Assembly (PPL Ref # 18-01-
29).
Note: This is a Magnet Sensor. This type of sensor detects a magnetic field of a specific polarity. To
toggle this sensor, move a magnet close to the sensor then remove the magnet. If there is no
change in the sensor’s output, change the polarity of the magnet and retest.
Home Position Sensor (Part of CCD Module Assy PPL Ref # 18-01-14)
The Home Position Sensor is attached to the bottom of the scanner’s Carriage Unit (CCD Module Assy). It
detects the carriage home position by detecting the flag located near the left side of the scanner’s lower housing. If
the sensor is defective, replace the entire Scanner Assembly (PPL Ref # 18-01-29)