Printronix P7220 Matrix Printer Logo
Jose Castillo Posted on Mar 17, 2016
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Poor quality print. How can I perform head calibration and gap adjustment?

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Nick

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  • Printronix Expert 124 Answers
  • Posted on Mar 17, 2016
Nick
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Joined: Dec 21, 2011
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There is not a head calibration for this printer. There is a phasing adjustment if your print looks "shaky" or to adjust the gap you use the 2 3/32" allen screws on either side of the platen bar.

With the printer powered on, press the “ONLINE” key to place the printer offline. The LCD should display “OFFLINE/CONFIG. CONTROL”. On the control panel, press the arrow up and arrow down keys at the same time to unlock the enter key. “ENTER SWITCH UNLOCKED” briefly displays.

Press the arrow left key. “OFFLINE/DIAGNOSTICS” displays.

Press the arrow down key. “DIAGNOSTICS/Printer Tests” displays.

Press the arrow down key. “Printer Tests/Shift Recycle” displays.

Press the arrow left key until “Printer Tests/Phase Printer” displays.

Press “ENTER”. The display shows “Printer Tests/Phase Printer” and the test begins. The current phasing value is printed on the left of the printed pattern of all H’s. As the pattern prints, examine the H’s to verify the vertical lines are straight.

If the H’s are vertically straight and you are satisfied with the print quality, press “ENTER” to stop the test and then press “CLEAR” to exit the test menu.

If the H’s are not straight you will need to adjust the phasing value.

Press the arrow down key. The current phase index displays.

Press the arrow down key. An asterisk (*) appears next to the phase value.

Press the arrow right key to increase the phase value, press the arrow left key to decrease the phase value. Then press the “ENTER” key to activate the new value as it prints.

Watch the printout for the new phase value to print on the left edge of the line of H’s. Examine that line for print quality. Continue to make adjustments until you are satisfied with the print quality.

When the printed pattern of H’s is acceptable, press the arrow up key twice until “Printer Tests/Phase Printer” displays.

Press the “ENTER” key to stop the test.

Testimonial: "Good answer. But, how I realize the phasing adjustment? Can you give me the instructions?"

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Cheers
TeaCii
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Dear friend,

Just few tipe.

1. Try to use glossy photo quality paper for photo print out. which is look good and not so expence of ink.
2 Use good quality glossy type normal paper for text print out. that can not **** much ink from the cartriges.
3. try to cover your printer always.
4. clean the head via tst print oftenly.

Thnks & waiting for your feedback.
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