Epson DFX-9000 Field Repair Guide 3/29/07
Motors, Sensors, and Switches Printer Component, Software Item, LCD Display, Printer Button Page 158.
APTC Motor
Traditionally called the Platen Gap Motor, APTC stands for “Automatic Paper Thickness Control”. The APTC Motor
is a 4 wire stepper motor that is used to detect the paper thickness. It also is used to set the platen gap (the air gap
between the paper and the nose of the print head). The APTC Home Position (HP) Sensor detects that the platen
gap is at its widest point. The APTC Sensor detects the paper thickness.
SS Gear
Carrier Unit
Carrier Shaft
Guide Stay
APTC Sensor
APTC Motor
APTC HP Sensor
APTC Unit
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