Top Margin (Duplex) - Lexmark X651de Service Manual

Top Margin (duplex)

This setting controls the offset between the first scan line on the front of the duplex page and the first scan line
on the back of the page. Therefore, be sure to set the top margin in REGISTRATION before setting the duplex
"Registration (printer)" on page
top margin. See
To set the Top 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 Top 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 top margin by 1/100 of an inch.
•
The Top Margin (duplex) range is -25 to +25, and the default value is 0.
•
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.
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.
2. When the motor stops, the results are displayed. Listed below is an example of such results:
Duplex Motor Test Test Passed
Avg. PWM of High-Speed Test: 1d
Avg. PWM of Low-Speed Test: Oe
Max. PWM of Low-Speed Test: 00
Min. PWM of Low-Speed Test: 0b
Motor KE Value: 2d
Motor Test Results: 00
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