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