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HP Designjet Multi-Roll Feeder - Media Problems

Media does not feed

If the media does not feed into the in-feed slot in the media cabinet, try the following:
  • Make sure both roller levers are lowered to open the in-feed slot.
  • Trim the leading edge of the paper so it does not get caught in the slot.
  • Insert the media evenly to avoid angles. Do not insert one corner and then the other.
    A beep means that the printer has detected the media in the in-feed slot. The printer will only beep once in a load cycle, if media is removed and reloaded the printer may not beep again if the load process is not re-started through the front panel.

Media does not advance

If the media does not advance far enough into the in-feed channel in the media cabinet, the paper is slipping and the rollers do not grip the media. Try the following:
  • The pre-tension might be applied incorrectly. Always apply pre-tension by turning the star screw on the left side of the spindle. Never apply tension by turning the media roll or the spindle disks.
  • Clean the rollers using the cleaning procedure.
  • If the media being used is heavy coated, try changing the media.

Media jam in the in-feed channel

If there is a media jam in the in-feed channel, try the following:
  • Turn the multi-roll feeder off using the power isolator switch on the connector panel at the back.
  • Open the media cabinet doors and lower the roller lever on both sides.
  • Turn the spindle to pull the media out of the in-feed channel and to collect it back on to the roll.
  • If the media is blocked, place the spindle in the park position for better access to the in-feed channel, and then pull the media edges in a downwards direction on both sides.
  • If the media cannot be reached because the roll has finished and it has not been ejected from the front of the printer, open the rear cover and try to remove the media from the motion control assembly.
    Do not insert media with crumpled or damaged edges, trim the media first.

Avoiding media jams

The multi-roll feeder is designed for complete unattendedness. There are a few simple steps to take to ensure this. When loading media, check the following:
  • Make sure the rear cover of the multi-roll feeder is fully closed.
  • Use rolls of media that are not glued to the core.
  • Make sure the leading edge is trimmed straight.
  • Make sure there is even tension across the width of the media.
  • Make sure media is aligned (the same amount of media is fed across the width).
  • Apply pre-tension the media.
When the printer is going to be unattended for a long period of time, it is a good idea to load and unload each roll using the LOAD/UNLOAD commands from the front panel (if the media loading procedure was not completed when prompted by the printer). This will ensure that each roll of media loaded is correctly aligned and that the printer is capable of loading/unloading each roll when requested by the print jobs in the queue.

Media jam in printer

Media is jammed when the front panel displays either of the messages below:
  • Switch Power off. Check printhead path (xxxxx shut down).
  • Switch Power off. Check paper path (xxxxx shut down).
To clear the jam, try the following:
  1. Turn the printer off at the front panel, and open the window.
  2. Turn the multi-roll feeder off from the power isolator switch on the connector panel at the back.
  3. Carefully move the printhead carriage out of the way, if possible, all the way, to the enclosed area on the left or the right. Which way the printhead carriage moves depends on where the media is jammed.
    When moving the printhead carriage, touch only the black plastic parts.
  4. Carefully remove any of the jammed media, which easily lifts up and out from the top of the printer.
  5. Open the media cabinet doors and lower the roller lever on both sides.
  6. Carefully pull the media down and out of the in-feed channel.
If you are unable to remove the media, continue as follows:
  1. Go to the back of the multi-roll feeder and open the rear cover.
  2. From the back, carefully pull the media out of the in-feed assembly.
  3. Now pull the media down and out of the in-feed channel in the media cabinet.
  4. Lower the window and switch on the printer and the multi-roll feeder. Press the FORM FEED and CUT keys to eject any pieces of media that are still in the media path.
  5. After clearing the jam, reload the media as normal.

Media misaligned

When a “Misaligned” message is displayed, the printer unloads the media. Press ENTER to continue and the printer will display the “Ready for paper” status message.
Do the following:
  • Check for even tension across the width of the media. If there is less tension on one side than the other, then the media is not straight in the in-feed slot.
  • There is a hole on the right side of the in-feed slot. Make sure the edge of the media is aligned with the left side of this hole.
  • Lower the roller levers on both sides and adjust the media so that tension is even across the whole width. Turn the spindle disk quickly two or three times away from you and then two or three times in the opposite direction. This will help to create an even tension.
  • Lift the roller levers on both sides and try to load the media again.
If this does not solve the problem, remove the media from the in-feed slot and repeat the loading procedure. Make sure the roll is against the right hand spindle disk (fully inside the roll core), and do the same for the left hand spindle disk. The printer verifies correct alignment using the blue line on the right hand side of the printing area as a reference.

Media does not unload correctly

If the media does not fully unload from the in-feed channel in the media cabinet, check the following:
  • Maybe there is not enough pre-tension. Always apply pre-tension by turning the star screw on the left side of the spindle three or four times (or more if the spindle is on a low retainer bracket). Never apply tension by turning the media roll or the spindle disks.
  • The spring applying pressure on the retainer bracket is loose and the spindle is slipping in the retainer bracket. Turn the multi-roll feeder off and turn the retainer bracket screw one turn in a clockwise direction.

Partial or blank prints

If the print is partial or blank, check the following:
  • Check the multi-roll configuration in the printer driver: Check that the Has Multi-Roll Feeder check box is selected.
  • Check default roll configuration: Check if a roll is installed for the roll configured as default. If a roll is not selected from the printer driver, the printer will try to print to the default roll, and if no identical roll is available, it will not print the job.
  • Check Productivity mode settings: If the mode is set to normal and the roll has finished, the job cannot be printed.
  • Check cable connection: Check that the printer and any network cables are securely connected to the printer. Make sure the parallel cable is connected between the multi-roll feeder and the printer and ensure that it is also firmly connected between the computer and the multi-roll feeder.
  • Check media configuration: Make sure the media rolls are configured correctly.
  • Check document file: When printing files that are generated with versions of printer drivers for printers without multi-roll feeders, the header section of some file formats already contains information on the media. In these files, roll or sheet information corresponds to roll 1 in the multi-roll feeder. These files will print to the Default Roll. HP advises that the top roll (roll 1) is used as the default.
    The header section may also include print mode information, so if different media is used, the quality of the prints may be affected. HP recommends that the print file be regenerated from the original document to avoid unexpected results.

Horizontal lines

If horizontal lines print, check the printer documentation for the solution. If a solution cannot be found, perform the advance calibration.
For help with other image quality problems, refer to the documentation that came with the printer.






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