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HP Indigo 7000 Digital Press - Charge roller maintenance procedures

Removing and replacing the charge roller
Remove the charge roller from the press to perform maintenance procedures.
To remove the charge roller:
  1. Press an Emergency Stop button and open the front door
  2. Press the charge roller latch, and pull the charge roller unit out.
    Figure : Removing the charge roller from the press
    To replace the charge roller unit:
    Push the charge roller in until it clicks into place.
Replacing the charge roller
Replace the roller when it is worn or damaged.
To replace the rubber roller:
  1. Remove the charge roller unit from the press by pressing the charge roller latch, and pulling the unit out. Place the unit on the worktable.
  2. Unlatch the roller from the charge roller latches. Unlatch the metal latch, then open the blue clip.
    Figure : Charge roller latches blue-clip
  3. Remove the roller.
  4. Install the new roller. Latch it into position.
  5. If necessary, clean the roller using a lint-free wipe and imaging oil.
  6. Reinstall the charge roller into the press.
Replacing the carbon brushes
Replace the carbon brushes when they wear out.
To replace the carbon brushes:
  1. Remove the charge roller unit by pressing the charge roller latch, and pulling the unit out. Place the unit on the worktable
  2. Remove the rubber roller. See above. .
  3. Remove the carbon brush caps.
  4. Push the carbon brushes out of the charge roller unit.
  5. Install the new carbon brushes.
  6. Install the carbon brush caps.
  7. Reinstall the rubber roller.
  8. Reinstall the charge roller in the press, and lock it in place. The unit is locked when you hear a click.
    Figure : Removing the carbon brush covers
Cleaning the charge roller
Clean the charge roller as part of your maintenance routine.
  caution:
Wear safety gloves for this procedure, and use only IPA to clean charge roller.
To clean the charge roller:
  1. Place the press in Standby and press an Emergency Stop button.
  2. Remove the charge roller from the press.
  3. Clean the charge roller using a lint-free wipe dampened with imaging oil.
  4. Clean the balancing roller and the rest of the assembly using IPA.
  5. Reinstall the charge roller in the press, and lock it in place. The unit is locked when you hear a click.

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