Lexmark 2580+, Руководство по обслуживанию

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Diagnostic information
2-15
2580+, 2581+, 2590+, 2591+
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Paper Select sensor service check
If the form feed length is off by about 1 inch (25 mm), enter Setup mode and verify that the form length setting is
correct. Go to
“Setup mode” on page 3-8 .
POST service check
Step FRU Action
1 Paper Select sensor Remove all paper from the printer, and do the following:
• Place the tractor in the push position, and be sure the Auto Sheet Feed
(ASF) is set to off in Setup mode.
• Press FormFeed , and time how long the gear train rotates.
With the Paper Select lever in the cut sheet position (sensor open) the gear train
should rotate for less than 2 seconds. With the lever in the continuous forms
position (sensor closed), the gear train should rotate for more than 3 seconds. If
the gear train does not rotate for more than 3 seconds:
• Inspect the sensor to be sure it opens and closes by the paper separator.
• Replace the paper select sensor if the resistance does not change from zero
to infinite as the Paper Select lever is moved from cut sheet to continuous
forms.
If the Paper Select sensor is good, but the gear train does not run the right
length of time:
• Set the head gap to position 1, and disconnect the short flexible cable from
J3 on the logic board.
• Check the continuity between J3-3 (paper select sensor) and J3-4 (GND)
while activating the Paper Select lever.
If the resistance is incorrect, replace the logic board and reset the bidirectional
print adjustment. Go to
“Bidirectional print adjustment” on page 4-3 .
2 Pull Tractor sensor A failed Pull Tractor sensor can cause the Load/Unload button to malfunction.
With the tractor in the push position:
• Press Load/Unload several times while alternately holding down and
releasing the left pull tractor actuator. The paper should not park or load
when the pull tractor actuator is held down.
• If the paper does park or load with the pull tractor actuator held down, go to
“Pull Tractor sensor service check” on page 2-18 .
Step FRU Action
1 Cables A faulty interface cable can cause a POST error. Disconnect the interface cable
from the printer, and turn the printer off and then back on.
Check the connections of the power cable to the logic board.
Check the condition and continuity of the operator panel cable.
2 Code module Turn the printer off and then back on. If you get the same error during power-up,
verify that the code module on the logic board is correctly installed.
3 Logic board Replace the logic board if necessary. and reset the bidirectional print
adjustment. Go to
“Bidirectional print adjustment” on page 4-3 .