GE MAC 1600, Руководство по обслуживанию

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Troubleshooting
If one cycle of the square wave spans 12.5 mm on paper, measured from
corner to corner of the wave, with an allowable tolerance of 0.5 ±1.25 mm
(10%), the test passes.
If this criteria is not met, the test fails.
• 5mm/s Speed Test
Measure five or more cycles and divide your measurement by the number
of cycles measured. If one cycle of the square wave spans 5 mm on paper,
measured from corner to corner of the wave, with an allowable tolerance of
0.25 ±0.5 mm (10%), the test passes.
If this criteria is not met, the test fails.
5. Perform the Print Head Test .
a. Select Print Head Test .
The writer prints a 1–page print head test report.
b. Verify that there are no gaps in any of the lines printed.
Up to 5 mm of blank paper is allowable at the top and bottom of the page.
When the page is done printing, the following window opens:
• If there are no gaps in the lines on the printed report, press F4 ( Yes ).
• If there are gaps in the lines on the printed report, press F5 ( No ).
6. When all writer tests are completed, press F6 ( Cancel ) to close the window.
7. If one or more of the writer tests fail, use the following table to determine how to
proceed.
Steps for Writer Test Failure
Observed Failure Remedy
Improper paper queuing Replace the queue sensors.
• Refer to “” on page .
• Refer to “Replacing Queue Mark Sensor” on
page 94 .
Missing dots (gaps in printed
report) Replace the printhead.
Refer to “Replacing the Printhead” on page 88 .
Faulty roller.
Replace the paper tray assembly. 1
Refer to “Replacing the Paper Tray Assembly” on
page 64 .
Faded prints
Printhead pressure problem.
Replace the springs.
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