Okidata Microline 520 Service Handbook
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Brand: OKIDATA
Category: Printer
Type: Service handbook
Model: OKIDATA Microline 520 , OKIDATA Microline 521
Pages: 321
4.8.02 Rolling ASCII Test
General Information
The rolling ASCII test is a continuous printout of all 96 ASCII characters.
Use this test to check the following items.
1. Print Quality
Across the entire length of a line
Down the entire page
2. Line Spacing
3. Left Margin Alignment
At the top of the test is the printer type (1), emulation (2), country (3), and firmware revision
level (4). This information is often required while performing service or when contacting
Okidata. Have this test available during your service call.
CAUTION
Before running this test, make sure that continuous feed paper is loaded.
If you are running this test on a Microline 521, use wide paper or have the page width
set for 8.5" x 11" in the printer menu.
Running the test without paper loaded or having the wrong width paper loaded will
allow the printhead to print on the platen. This will dirty the platen, cause excessive
wear on the ribbon, and may damage the platen, ribbon, and printhead.
Procedure
Follow these steps to print the Rolling ASCII Test.
1. Load the correct size continuous feed paper.
2. Power off the printer.
3. Press and hold the QUIET switch while powering on the printer. You must hold the
QUIET switch until the test starts to print.
4. The test will continue to print until you press the SEL switch or run out of paper.
Failure Analysis 4 - 44 Microline 520/521 Service Handbook
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