Epson DFX-9000 Repair Manual page 155

Epson DFX-9000 Field Repair Guide
SENSOR POWER
APTC ON
(AUTOMATIC
PAPER
THICKNESS
CONTROL
SENSOR)
Troubleshooting
RED LEAD BLACK LEAD
At the APTC At the APTC
SENSOR SENSOR
Pin 2 Pin 3
Pin 4
Printer Component, Software Item,
ACTION
Slowly rotate the
CARRIAGE SHAFT
forward and then
backwards.
LCD Display, Printer Button
3/29/07
METER READING
Both outputs toggle
between 0 and 5 VDC
Note:
A correct reading
must be obtained
from both outputs for
the sensor to pass
testing
If the CARRIAGE is
rotated too quickly an
average reading of 2.5
VDC might be
displayed.
Page 146.