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HP Designjet cc800ps, 815mfp and 4200 Scanner - Scanner Maintenance

Maintenance procedures should all be performed in a single maintenance session, starting with cleaning the scan area and ending with camera alignment and calibration.
For best performance, copier maintenance should be performed once a month.
Preventive maintenance service should be performed every two years (this must be performed by a service engineer).

Cleaning the scan area

To clean the scanner, use the cleaning tools provided in the maintenance kit and a cleaning fluid (not included in the maintenance kit).
Do not use abrasives, acetone, benzene, or fluids that contain these chemicals. Do not spray liquids directly onto the scanner glass plate or anywhere else in the scanner.
  1. Turn the scanner off.
    Figure : Turning the scanner off
  2. Disconnect the power cable.
    Figure : Disconnecting the power
  3. Open the scanner cover to expose the scan area.
    Figure : Opening the scanner cover
  4. Position fingers in the four lock slots (two at each end of the platen, indicated by arrows in Figure 4), and press down.
    Figure : Locating lock slots
  5. With the platen pushed down, slide the two locks inward until the pins at either end pop up, locking the platen open and ready to be removed.
    Figure : Locking the platen open
  6. Raise the two handles and remove the pressure platen.
    Figure : Removing the platen
  7. Clean the glass with a lint-free cloth and a mild, streak-free glass cleaner.
    Figure : Cleaning the glass
  8. Dry the glass fully using a separate clean, dry, lint-free cloth like the one provided with the maintenance kit.
    Figure : Drying the glass
  9. Turn the pressure platen over to expose the white background plate.
    Figure : Turning the platen
  10. Clean the white background plate with a lint-free cloth and a mild, streak-free glass cleaner.
    Figure : Cleaning the background plate
  11. Clean the transport rollers and surrounding area.
    Figure : Cleaning the transport rollers
  12. Dry the white background plate, rollers, and surrounding area fully using a separate clean, dry, lint-free cloth.
    Figure : Drying the background plate
  13. Replace the pressure platen and lower the two handles.
    Figure : Replacing the pressure platen
  14. While pushing down on the left side of the pressure platen as shown in Figure 14, push in the pin and slide in the lock to lock the platen end into place.
      Figure : Locking the left side of the platen into place
    1. Pushing pin
    2. Sliding lock
  15. While pushing down on the right side of the pressure platen as shown in Figure 15, push in the pin and slide in the lock to lock the platen end into place.
      Figure : Locking the right side of the platen into place
    1. Pushing pin
    2. Sliding lock
  16. With the platen firmly locked into place, close the scanner cover.
    Figure : Closing the scanner cover
  17. To keep out dust and reduce maintenance time, cover the scanner with the plastic dust cover when not in use.
    Make sure the scanner power is OFF when using the scanner dust cover.
    Figure : Covering the scanner
  18. Flip/hinge the glass up so the bottom of the glass may be cleaned.
    Power cycle the scanner & Touchscreen after cleaning, if you intend to next do Scanner Maintenance.

Camera alignment and calibration

Scanner color calibration must be performed regularly and is recommended prior to creating new Media Profiles through closed-loop calibration. The scanner's calibration is crucial for the color matching process to work properly.
Calibration is the process of setting the scanner device to known color conditions so that it performs in accordance with an established standard. Calibrating the scanner to the ANSI IT8 color standard minimizes color deviations between scanned ANSI IT8 reference color patches (found on the IT8 Calibration reference sheet) and known color reference values.
The calibration wizard allows the selection of either sRGB or NTSC color spaces. The sRGB standard produces optimal color matching between the touch screen, scanner and printer.
Scanner calibration ensures stability, reproducibility, and predictability of color output. Light sources and other parts in the scanner can change over time and this affects the scanner’s interpretation of colors and its linearity. Without calibration, the output produced by the scanner in six months will differ from its current output and will likely be noticeably inaccurate. Basic calibration reduces noise in the dynamic area and ensures stable and clean scans. When scanning at high resolutions, even the tiniest dust particles can cause unwanted speckles in the output. Calibration can help reduce this kind of noise and ensure clean scans every time.
Before aligning and calibrating the cameras, make sure to complete the first process in scanner maintenance - cleaning the scan area. An unclean scanning area will give imprecise calibration results.
Camera alignment and calibration is a fully automatic process that is activated through a wizard and then left to run on its own. To complete the camera alignment and calibration:
  1. Connect the scanner power cable.
    Figure : Connecting the power cable
  2. Turn the scanner on.
    The scanner should be warm. Make sure that the scanner has been turned on for at least one hour prior to camera alignment and calibration. Slight light intensity changes and camera shifting can occur just after turning the scanner on and the warm-up time will ensure that light conditions and camera heights have stabilized.
    Figure : Turning the scanner on
  3. Double click the scanner software icon on the touch screen monitor and select the Setup tab.
    Figure : The Setup tab
  4. Press the Scanner button to access scanner setup. For the 815mfp and 4200 Scanner, press the Scan Options button.
  5. Press the Scanner Maintenance button to start the maintenance wizard.
  6. Follow the maintenance wizard instructions step by step through the entire maintenance process: Camera Alignment, Stitching, and Calibration.
  7. Insert the Maintenance Sheet that came with the system. The sheet's printed side must be inserted face down. Align the midpoint arrow with the scanner's midpoint arrow and feed the sheet into the scanner.
  8. When maintenance is completed, remove the Maintenance Sheet from the copier and return it to its protective cover and then place it in the storage folder. Store the folder in a dry place and out of direct light.






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