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Changing the Developer Mix

Attention!

You must leave printer power on while you do this task, but the printer should not be printing.

Using the wrong developer mix can cause serious print quality problems; this can force a service call. See Table 20 for the correct developer mix part number.

Do this task when you see the following message: CHANGE DEVELOPER MIX 0788

Note:
You do not have to replace developer mix the first time you see the CHANGE DEVELOPER MIX message. To bypass the message, SELECT the Ready push-button on the main Display/Touch Screen.

The CHANGE DEVELOPER MIX message reappears each time end-of-forms is reached, or every 4 000 feet of forms thereafter. When 50 000 additional feet of forms have been processed since the message originally appeared, you must change developer mix before you can return the printer to Ready status.

Operator Tips

You need the following items when you change the developer mix:

This is an image that illustrates how to open the front center left and right covers and the top left cover
  1. Open the front center left and right covers and the top left cover.
  2. Clear the forms, if possible, from the forms input area. If you cannot remove the forms from the input area, do the following:
  3. Remove the empty developer mix bottle from its storage slot at the right of the forms input area.
    This is an image that illustrates how to remove the cap from the empty bottle
  4. Remove the cap from the empty bottle. Put the bottle back in the slot, directly under the developer mix drain hose.
  5. Grasp the drain hose and turn the capped end up upward (so that any developer mix in the hose from the last change does not spill). Remove the cap from the hose.
    This is an image that illustrates how to insert the end of the hose into the empty developer mix bottle
  6. Carefully insert the end of the hose into the empty developer mix bottle. Ensure that the hose is inserted securely and that no sharp bends obstruct the hose.
    This is an image that illustrates how to locate the Developer Mix Inlet
  7. Locate the Developer Mix Inlet (1), the Developer Drain Lever B (2), and the Developer Run Push-button A (3) in the developer area.
    Important
    1. Never open the developer drain unless the developer drain hose is inserted into an empty developer mix bottle.
    2. After you have opened and closed the developer drain, you must replace the developer mix. Opening the drain resets the developer mix usage timer. Resetting the timer without changing the developer mix could result in severe print quality problems that are caused by the developer mix being used beyond its normal life.
    This is an image that illustrates how to open the Developer Drain Lever
  8. Open the Developer Drain Lever B by pulling out the lever and then lifting it upward.
  9. The developer mix starts draining immediately. Hold the drain hose so that it does not come out of the empty mix bottle. Shake the hose several times while the mix is draining to ensure that no developer mix remains in the hose.
    This is an image that illustrates the Developer Run Pushbutton
  10. Press the Developer Run Push-button A (1) one time to ensure that all of the developer mix is drained. There should be about 1.8 liters of used developer mix in the bottle.
    This is an image that illustrates how to close the developer drain by pushing Developer Drain Lever
  11. When the developer stops running, close the developer drain by pushing the Developer Drain Lever B downward and then pushing it in.
  12. Once the developer mix has finished draining, ensure that no developer mix remains in the drain hose. Do this by shaking the hose vigorously while you hold the hose as vertical as possible.
  13. Remove the developer drain hose from the bottle. Put the cap on the developer drain hose, and return the hose to its recessed storage area.
  14. Put the cap on the bottle. Discard the bottle and its contents.
    Attention!

    To prevent print quality problems, never reuse waste developer mix. Never put anything other than new developer mix into the developer mix inlet.

  15. Remove the cap from the new developer mix bottle.
    This is an image that illustrates how to remove the developer inlet cover
  16. Remove the developer inlet cover.
  17. Clean the cover to remove any excess developer mix, and put it in a safe place.
    Important

    Ensure that the developer drain is closed.

    This is an image that illustrates how to pour developer mix into the inlet
  18. Press the Developer Run Push-button A and slowly pour the developer mix into the inlet.

    If the developer stops running before the new developer mix bottle is empty, press the Developer Run Push-button A again.

  19. Clean the empty developer mix bottle with a cloth or paper towel to remove any excess developer mix. Store the bottle in the recess at the right of the forms input area in front of the drain hose for the next time you change developer mix.
    Operator Tip

    If you already have several empty developer mix bottles in storage, you may discard the extra bottle.

    This is an image that illustrates how to put the developer inlet cover back in place
    Attention!

    Never operate the printer when the developer inlet cover is removed.

  20. Put the developer inlet cover back in place.
  21. Clean the developer area with a cloth or paper towel to remove any spilled developer mix.
  22. Replace the forms in the forms input area so that printing may continue.
  23. Close the covers of the printer.
  24. To resume processing, SELECT the Ready push-button on the main Display/Touch Screen.