130
Chapter 4 Diagnostics Menu
Printer Tests
The printer tests are used to check the print quality and p rinter operation.
The Printer Tests parameters are described below. (For tes t running
procedures, see page 278.)
•Shift Recycle. A sliding alphanumeric pattern that identifie s missing or
malformed characters, improper vertical alignment, or ve rtical
compression.
•All E's. A pattern of all uppercase E's that identifies miss ing characters,
misplaced dots, smeared characters, improper pha sing 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 pha sing.
•All Underlines. An underline pattern useful for identifying hammer ban k
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 Printr onix
representative runs this test.
The Phase Printer test checks for wavy print. The initial ph ase value is set
in the factory. The Customer Service Engineer (CSE) runs the te st and
checks the quality. (The phase value prints on the l eft margin.) If the print
looks too wavy, the CSE changes the Phase Value para meter by
pressing the key while the test is running. A value between 1 and 200 0
displays. To change the value, the CSE presses theorkey 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 Mainten ance
Manual.