Printronix P5000LJ Series - Manual (Page 130)

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Chapter 4 Diagnostics Menu
Printer Tests
The printer tests are used to check the print quality and printer operation.
The Printer Tests parameters are described below. (For test running
procedures, see page 278.)
• 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 + 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.
• 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. It is recommended that only an authorized Printronix
representative runs this test.
The Phase Printer test checks for wavy print. The initial phase value is set
in the factory. The Customer Service Engineer (CSE) runs the test and
checks the quality. (The phase value prints on the left margin.) If the print
looks too wavy, the CSE changes the Phase Value parameter by
pressing the
key while the test is running. A value between 1 and 2000
displays. To change the value, the CSE presses the or key until the
desired value displays, and then presses ENTER.
Note Your Customer Service Engineer typically runs these tests. They are
described in more detail in the P5000LJ Series Printers Maintenance
Manual.