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  • MLVA Head Replace for Noritsu-2901

    Dear sir, I Replace a MLVA Head of Noritsu-2901 with a used on.It completed all procedure after Replacement according to service manual.All uniformity can complete gently, with pattern 2,3 & 4 but can't Remove any scratch & shade on the setup paper. what's the resign you think?what's the solution?

  • #2
    Perform all these steps.
    Clean the integrator section underneath the filter wheel where the MLVA connects to, clean the dichroic filters and reflector in the MLVA lamp house, fit a new MLVA lamp, clean the front surface of the MLVA head. Now try the below procedure.

    1. Initialize the MLVA data.
    2. Del unf_m_nai.dat (on C:\Noritsukoki\QSS-29\Data folder)
    3. Perform Inner Calibration Correction Adjustment.
    4. Carry out the Load Voltage Adjustment.
    5. Carry out Uniformity Pattern 2.
    6. Carry out Uniformity Pattern 3.
    7. Carry out Uniformity Pattern 4.
    8. Del UNF_FB.dat (on C:\Noritsukoki\QSS-29\Data folder)
    9. Copy the UNF01.dat file and paste it on desktop.
    10.Rename "UNF01.dat" on the desktop to "UNF_FB.dat"
    11.Move the renamed "UNF_FB.dat" file to Data folder mentioned in item 8.
    12.Perform the Uniformity pattern 1:
    - Choose the paper magazine.
    - Choose "Pass": to Cancel and skip the test print.
    - Start the Uniformity measurement with the calibrator.
    - Press "YES" key
    13. Confirm the print quality.