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HP Designjet 100, 110, 120 and 130 Series Printers - Troubleshooting the Ink System

Introduction
This document contains instructions for identifying and solving problems with the printer's ink cartridges and printheads.
When experiencing any problems with the printer, complete the following three steps before proceeding with any specific troubleshooting instructions:
  1. Check the printer display panel for any flashing icons. These icons help identify specific printer problems.
  2. Check the lights on the printer. If the yellow light is blinking, the printer is in an error state that requires attention.
  3. Turn the printer off and then back on again. This might be all that is needed to clear the flashing icon or yellow warning light. If this step does not work, proceed with more specific troubleshooting measures.
Ink cartridges
Designjet 100/110 series
The amount of ink in the cartridges is shown by a series of four bars on the front panel display for the HP Designjet 100/110 series. These bars correspond to the black, cyan, magenta, and yellow cartridges respectively, from left to right. The number of solid squares in the bar indicates the amount of ink in the cartridge.
Designjet 120/130 series
The amount of ink in the cartridges is shown by a series of six bars on the front panel display for the HP Designjet 120/130 series. These bars correspond to the yellow, black, magenta, cyan, light magenta, and light cyan cartridges respectively, from left to right (Figure 2) The number of solid squares in the bar indicates the amount of ink in the cartridge.
If the last square in a bar is flashing, the cartridge is low on ink (figure 1, callout 1). If the entire bar is flashing, the cartridge is out of ink (figure 1, callout 2).
If all of the cartridges in the display flash, there is an error in the ink system.
    Figure : Ink cartridge status display (HP Designjet 100/100plus)
  1. Flashing bar
  2. Flashing cartridge
Figure : Ink cartridge status display (HP Designjet 120/130)
  note:
Information about the remaining life of ink cartridges is also available on the Printer Information sheets.
Ink cartridge low or out
Replace the depleted ink cartridge as soon as possible using the following steps:
  1. Open the front hinged flap at the right of the printer.
  2. Grip the ink cartridge by its shorter top edges, and lift it up and out of the printer.
  3. Lower the new ink cartridge into its slot until it clicks into place and feels secure.
  4. Repeat the steps above for each ink cartridge that needs to be replaced.
  5. Close the outer flap.
Ink system error
  1. Remove all of the ink cartridges (see Steps 1 and 2 above).
  2. Return the cartridges one by one to their locations; making sure that each is firmly seated in the proper position.
  3. If the corresponding icon stops flashing, that cartridge is OK.
  4. If the icon continues to flash, replace the cartridge with a new one.
Printheads
The printheads are shown on the display panel beneath their corresponding ink cartridge color:
Designjet 100/110 series:
Black, cyan, magenta, and yellow, from left to right.
Designjet 120/130 series
Yellow, Black, Magenta, Cyan, Light Magenta, Light Cyan
A flashing printhead on the front panel display indicates a faulty printhead.
Figure : Faulty printhead indicator
  note:
The HP Designjet 120/130 will display six printheads instead of the four shown above.
If the printer reports that a printhead is faulty, it might be necessary to replace the printhead. However, before replacing the printhead, try cleaning the electrical contacts between the printhead and the printer.
To clean the electrical contacts
  1. Unplug the printer.
  2. Gently clean the electrical contacts on the printhead with a damp lint-free cloth.
  3. Gently clean the electrical contacts in the carriage with a damp lint-free cloth wrapped around a pen or pencil.
  4. Wait for the contacts to dry.
  5. Plug in the printer, and then turn it on.
  caution:
Clean only the electrical contact surfaces shown in red in the illustration below. Do not clean the fragile nozzle plate on the under side of the printhead!
Figure : Electrical contact areas to clean
Clean electrical contacts
If the printhead icon in the front panel is still flashing after trying these steps, replace the printhead.
To replace the failing printhead
  1. Open the front hinged flap at the right of the printer.
  2. Open the second (back) part of the flap and lift it right back.
  3. The print carriage will move to the left and then back to the right. Wait for it to stop.
  4. Pull the printhead cover up and towards you, so that the hook at the front unlatches itself, and then push the whole cover back so that the printheads are exposed.
  5. Lift the small handle at the top front and use it to pull the printhead vertically up and out of the printer.
  6. Take the new printhead and remove the tape that protects its electrical contacts and ink nozzles.
  7. Lower the new printhead into place and close its small handle.
  8. Push the printhead gently into place, so that it is quite secure.
  9. Repeat the preceding four steps for each printhead that you wish to replace.
  10. Pull the printhead cover towards you, ensuring that the hook at its front edge latches onto the tab, and then push it away from you to close the cover.
  11. Close the rear part and then the front part of the outer flap.

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