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HP Deskjet - Cleaning and Maintaining the 900 Series Printer

Introduction

This document will explain how to clean and maintain the HP Deskjet 900c series printer and print cartridges. Since this document contains instructions, it may be advisable to print it out as a reference.

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Maintaining the HP Deskjet 900c series printer

Because the HP Deskjet 900c series printer ejects ink onto the paper in a fine mist, ink smudges may eventually appear on the HP Deskjet 900c series printer case. Follow the cleaning instructions provided below.

  • Do not clean the interior of the HP Deskjet 900c series printer. Keep all fluids away from the interior.

  • To remove stains, smudges, and/or dried ink from the exterior of the HP Deskjet 900c series printer use a soft cloth moistened preferably with distilled water. Do not use household cleaners or detergent. In the event that a household cleaner or detergent is used on the HP Deskjet 900 series printer, wipe the exterior surfaces with a soft cloth moistened with water.

  • Do not lubricate the metal rod the print cartridge cradle moves on. Noise is normal when the cradles move back and forth.

Cleaning the HP Inkjet print cartridges can improve the quality of printing. If a printed page is missing lines or dots, perform the steps detailed in the "Correcting missing lines or dots" section of this document below.

If a printed page has streaks of ink on it, click here to skip to the steps detailed in the "Eliminating ink streaks" section.

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Correcting missing lines or dots

Clean the HP Inkjet print cartridges when lines or dots are missing from printed text and graphics, as shown below:

Figure 1: Missing lines or dots

The Inkjet print cartridges can be cleaned from either the HP Toolbox or from the front panel of the HP Deskjet 900c series printer.

NOTE: Do not clean the HP Inkjet print cartridges unnecessarily, as this wastes ink and shortens the life of the HP Inkjet print cartridge.
NOTE: Users with the HP Deskjet 900c series printer installed on a network will not have access to the HP Toolbox and will need to clean the cartridges from the front panel.

Microsoft(R) Windows

  1. Click Start , click Programs , click HP Deskjet 900c series , and then click HP Deskjet 900c series Toolbox.

  2. On the Printer Services tab, click Clean the Print Cartridges . The Clean Print Cartridges dialog box appears.

  3. Click Clean .

  4. A page prints that shows the results of the first cleaning. If the print quality is good, click Done . Click Intermediate Clean to do a more thorough cleaning and continue to the next step.

  5. Another page prints that shows the results of the intermediate cleaning. If the print quality is good, click Done . Click Prime , to prime the print cartridges and continue to the next step.

  6. A third page prints that will show the results of the priming. If the print quality is good, click Done . Click Clean Again to clean the print cartridges again. If the print cartridges are not clean after this last test, they may be faulty and need to be replaced.

Macintosh

  1. Double-click the HP Deskjet 900 series Utility icon in the Utilities folder on the main directory of the hard drive.

  2. Click the Clean panel button, then click the Clean button and follow the instructions displayed on the screen.

Cleaning the cartridges using the Front Panel of the HP Deskjet 900c series printer

  1. Press and hold the Power button, then press the Cancel button twice.

  2. A page prints that shows the results of the first cleaning. If the print quality is still poor, proceed to the next step.

  3. Press and hold the Power button. While holding the Power button, press the Cancel button twice, then the Resume button once.

  4. Another page prints that shows the results of the Intermediate cleaning. If the print quality is still poor, proceed to the next step.

  5. Press and hold the Power button. While holding the Power button, press the Cancel button twice, then the Resume button twice.

  6. A third page will print that shows the results of the advanced cleaning.

If this process does not improve the print quality, the HP Inkjet print cartridges may be low on ink. If you are unable to use the HP Toolbox, check the level of ink in the cartridges by opening the HP Toolbox and clicking the Estimated Ink Level tab. Replace the HP Inkjet print cartridges if appropriate. Also, dust fibers will occasionally drag through the ink and streak it. If cleaning the cartridges does not correct the streaking, try the steps in the next section.

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Eliminating ink streaks

If the HP Deskjet 900c series printer is used in a dusty environment, ink streaks may result due to a small accumulation of debris inside the printer.

Figure 2: Ink streaks

This debris can include dust, hair, carpet, or clothing fibers. Ink streaking is easily prevented or corrected by cleaning two areas of the HP Deskjet 900c series printer:

  • The HP print cartridges.

  • The HP print cartridge cradle.

Materials needed

Before starting, ensure that the following materials are available:

  • Cotton swabs or any soft material that will not come apart or leave fibers (for example, a piece of clean cotton cloth, such as a handkerchief).

  • Distilled, filtered, or bottled water (tap water may contain contaminants that can damage the HP Inkjet print cartridges).

  • Scrap paper or paper towels to set the HP Inkjet print cartridges on.

    CAUTION: Be careful not to get ink on hands or clothing

Remove the HP Inkjet print cartridges

  1. Turn the HP Deskjet 900c series printer on and lift the printer’s top cover. The cartridges will move to the center of the printer.

  2. After the ink cartridges have moved to the center of the HP Deskjet 900c series printer, unplug the power cord from the back of the printer.

  3. Remove the print cartridges and place them wide side down on a piece of paper.

    WARNING: Keep new and used print cartridges out of the reach of children.
    CAUTION: Once the HP Inkjet print cartridges have been removed, make sure that they are not outside of the HP Deskjet 900c series printer longer than 30 minutes.

Clean the HP Inkjet print cartridges

  1. Grasp the top of the black HP Inkjet print cartridge.

  2. Dip a clean cotton swab into distilled water and squeeze any excess water from the swab.

  3. Clean the face and edges of the print cartridge as shown. Do not wipe the nozzle plate (see Figure 3.)

    Figure 3: Cleaning the print cartridge

    CAUTION: Be careful not to touch the ink nozzles on the bottom of the print cartridge or the copper contacts on the back of the print carriage. Touching these parts of the HP Inkjet print cartridge can result in clogs, ink failure, or bad electrical connection.
  4. Hold the HP Inkjet print cartridge up to the light and inspect for fibers on the face and edges. If fibers are still present, repeat Steps 2 and 3.

  5. Repeat Steps 1 through 4 with the Tri-Color HP Inkjet print cartridge using a clean, moistened cotton swab to avoid any contamination.

Clean the HP Inkjet print cartridge cradle

  1. Assume an eye-level position with the HP Deskjet 900c series printer.

  2. Locate the cradle that held the HP Inkjet print cartridges.

  3. Using clean, moistened swabs, wipe the underside of each wall of the carriage where fibers may collect and come in contact with the paper (see Figure 4). Repeat until no ink residue is seen on a clean swab.

Figure 4: Cleaning the print cartridge cradle

Reinstall the HP Inkjet print cartridges

  1. Reinstall the HP Inkjet print cartridges and close the top cover of the HP Deskjet 900c series printer.

  2. Load white paper into the IN tray.

  3. Reinsert the electrical power cord into the back of the HP Deskjet 900c series printer.

  4. Print a test page by following the steps below:

    • If using Microsoft Windows, open the HP Deskjet 900c series Toolbox, click the Printer Services tab, and Print a Test Page .

    • If using a Macintosh, double-click the HP Deskjet 900 series Utility icon in the Utilities folder on the main directory of the hard drive. Click the Test tab, then the Test button.

    • If using a network, press and hold the Resume button for approximately four seconds with the HP Deskjet 900c series printer powered on.

      NOTE: If streaking still appears, repeat the procedure until the test printout is clean. Additional maintenance tips are available at http://www.hp.com/support/home_products.

      To get the best performance from the HP Deskjet 900c series printer, HP recommends using only genuine HP supplies for HP Deskjet printers. Damage resulting from the modification or refilling of HP print cartridges is specifically excluded from the coverage of HP printer warranties. The HP Inkjet print cartridge numbers for the HP Deskjet 900c series printer are: Black HP 51645 series and Tri-Color HP C6578 series.

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