Riso GR 3770 Technical Manual page 23

<1> When the image scanner ADF shading sensor or the image scanner home position sensor is not turned
ON within 3 seconds after the flat bed read pulse motor gets ON, Step (3) takes place.
<2> "WAIT A MOMENT" message is displayed until the image scanner ADF shading or the image scanner
home position sensor gets ON.
* Occurrence of the following is judged as Flat Bed Read Pulse Motor Lock and "T15 CALL SERVICE" message
appears.
T15 (Flat Bed Read Pulse Motor Lock)
• The image scanner home position sensor not turned ON/OFF.
• The image scanner ADF shading sensor not turned ON/OFF.
• Image scanner home position sensor and the image scanner ADF shading
sensor turned ON simultaneously.
FLAT BED IMAGE SCANNING SECTION
3 - 5
THEORY OF OPERATION
GR3770