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• All H’s. A pattern of all uppercase H’s used to detect missing characters,
misplaced dots, smeared characters, or improper phasing.
• All Underlines. An underline pattern useful for identifying hammer bank
misalignment.
• All Black. A condition where all dot positions are printed, creating a solid
black band.
• Shuttle Slow. Verifies proper operation by exercising shuttle and ribbon
motion at low speed.
• Shuttle Fast. Verifies proper operation by exercising shuttle and ribbon
motion at fast speed.
• Shuttle Only. Exercises only the shuttle at fast speed.
• Phase Printer. Checks for wavy print. The initial phase value is set in the
factory. Run the test and check the quality. The phase value prints on the
left margin. If the print looks too wavy, change the Phase Value
parameter while the test is running. While the phase printer test runs,
press the DOWN key. To change the value, press the PREV or NEXT key
until the desired value displays and then press ENTER.
• Paperout Adjust. This test verifies the current Paper Out Dots setting,
which determines where the last line of text will print when there is a
paper out condition. Setting this parameter correctly prevents printing on
the platen from occurring. The Maintenance Manual describes in detail
how to run this test. Only an authorized service representative should run
this test.
• Burnin Test. Reserved for factory use.
• Print Error Log. Prints the current log of errors. Most non-routine faults
(ribbon stall, voltage faults) are stored in the error log.
• Clear Error Log. Clears entries in the error log.
Test Width
This parameter permits you to run the self-tests at full width or 80 columns.
Paper Out Dots
This parameter is used to adjust the paper out distance from the perforation;
you can specify where the last line on the page will print when there is a paper
out condition. Setting this parameter correctly prevents printing on the platen.
Only authorized service representatives should set this parameter.
System Memory
This parameter displays the amount of RAM installed.