Oki MB 780 Service Manual page 17

Sensor Test (duplex)
This test is used to determine whether or not the duplex sensors and switches are working
correctly. The test allows you to actuate the duplex input sensor located in the back part
of the duplex unit and the duplex exit sensor located in the return paper path.
• Select Sensor Test from DUPLEX TESTS. The message "Sensor Test Testing"
displays.
• Manually actuate each of the duplex sensors. When the sensor/switch is closed,
CL (closed) displays, and when the sensor/switch is open, OP (open) displays.
• Duplex input sensor
• Duplex exit sensor
• Press Stop to exit the test.
Motor Test (duplex)
This test lets you test the duplex option paper feed drive system, and verify that the
power and velocity values are acceptable. The duplex runs the DC motor at high speed
and low speed, taking an average of the power (PWM) required for each speed and
calculating the KE value.
To run the Motor Test (duplex):
• Select Motor Test from DUPLEX TESTS. The power indicator light blinks, and
the message "Motor Test Testing" displays.
• When the motor stops, the results are displayed. Listed below is an example of
such results:
• Touch Back or press Stop to exit the test.
Duplex Feed 1
This test feeds a blank sheet of paper to the duplex paper stop position 1. This test can be
run using any of the supported paper sizes.
• Touch
indicator blinks while the paper is feeding, and the message "Duplex Feed
1 Feeding..." displays.
• The message "Duplex Feed 1 Clear Paper" displays when the paper
reaches paper stop position 1, and the power indicator turns on solid.
• Remove the media from the duplex unit, and clear the message on the
operator panel by pressing Stop.
select Duplex Feed 1 from DUPLEX TESTS. The power
17