Left Margin (Duplex); Sensor Test (Duplex); Motor Test (Duplex) - Lexmark T650 Service Manual

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An increase moves the top margin down and widens the top margin. A decrease moves the top margin
upward and narrows the top margin.
4. Touch Submit.
5. Print the Quick Test (duplex) again to verify the adjustment. Repeat if necessary.

Left Margin (duplex)

To set the Left Margin (duplex):
1. Print the Quick Test (duplex):
a.
Touch to select Quick Test from DUPLEX TESTS.
b. Select Single.
c. Hold the page to the light to see the whether the top margin of the backside aligns with the
top margin of the front side.
2. Select Left Margin from DUPLEX TESTS.
3. Use the arrows to increase or decrease the current setting displayed on the touchscreen to select the
margin setting:
[setting's current value]
•
Each increment shifts the duplex left margin by 1/100 of an inch.
•
The Left Margin (duplex) range is -25 to +25, and the default value is 0.
•
An increase moves the left margin to the right and widens the left margin. A decrease moves the left margin
to the left and narrows the left margin.
4. Touch Submit.
5. Print the Quick Test (duplex) again to verify the adjustment. Repeat if necessary.

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.
1. Select Sensor Test from DUPLEX TESTS.
The message Sensor Test Testing displays.
2. 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
3. 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):
1. Select Motor Test from DUPLEX TESTS.
The power indicator light blinks, and the message Motor Test Testing displays.
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Diagnostic aids