Digital Equipment LGplus Series, Setup Manual

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6–6
Printer Self–Tests
The following printer self–tests are used to check the print quality and
operation of your printer. (See the procedure on the next page.)
NOTE: Your Digital Customer Service Engineer will typically run these tests.
•
Shift Recycle – A sliding alphanumeric pattern that identifies missing
or malformed characters, improper vertical alignment, or vertical
compression.
•
All E’s – A pattern of all uppercase E’s that identifies missing
characters, misplaced dots, smeared characters, improper phasing
problems, or light/dark character variations.
•
E’s plus TOF – A pattern of all E’s followed by a form feed to the next
page top of form, that identifies paper motion or feeding problems.
•
All H’s – A pattern of all uppercase H’s used to detect missing
characters, misplaced dots, smeared characters, or improper phasing.
•
Underline Only – 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. Only Digital Customer
Service Engineers should run this test.
•
Paperout Adjust Test– This test allows you to test the current Paper
Out Dots setting (see page 4–54), which determines where the last line
of text will print when there is a paper out condition. The LG
plus
Series
Maintenance Manual describes in detail how to run this test.
•
Burnin Test – Reserved for factory use.