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HP Deskjet 640C Manually Cleaning the Print Cartridge Cradle, Test, Test, Note:, Caution, Do NOT clean, HP DeskJet 640 Series Utility, http://www.hp.com/support/home_products

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3Using and Caring for Your Print Cartridges

5Clean the face and edges of the print cartridge as shown. DO NOT wipe the nozzle plate.

6Inspect the cartridge for fibers on the face and edges. If fibers are still present, repeat the cleaning process.

Do NOT clean

nozzle plate

Clean

7Repeat the cleaning process for the other print cartridge.

Caution Once you’ve removed the print cartridges, make sure that they are not outside of the print cartridge cradle longer than 30 minutes.

Manually Cleaning the Print Cartridge Cradle

1Using clean, moistened swabs, wipe the underside of each wall of the cradle.

2 Repeat until no ink residue is seen on a clean swab.

3 Reinsert the print cartridges, then close the printer’s top cover.

4 Make sure white paper is loaded into the IN tray.

5Reinsert the electrical power cord into the back of the printer.

6Print a test page. Double-click the HP DeskJet 640 Series Utility icon in the Utilities folder on your hard drive’s main directory, click the Test panel, then click the Test button.

Note: If streaking still appears, repeat the procedure until the test printout is clean. You will find additional maintenance tips at

http://www.hp.com/support/home_products.

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Contents

Page HP Customer Care User Forums HP Customer Care by Phone Acknowledgments Notice Table of Contents Table of Contents Introduction Introduction Help 1Using Your Printer Standard-SizeMedia Page Do not Do not 2Using Your Printer Software 2Using Your Printer Software File Icon Description Paper Size, Scaling, and Page Orientation Buttons Preview Cancel General Paper Type/Quality Layout Color Background Printing HP DeskJet 640C Series printer icon Background Instructions Printing Options job title I want to print… Photo Paper HP print settings to choose Guidelines to remember Page Setup Paper Type/Quality 1 (Normal) Portrait Plain Paper or Inkjet Paper for Hagaki Single envelope NOTE NOTE Cards (index, business, and other small media) NOTE Page Page Button -Paper Type: Choose HP Premium Inkjet Paper Manual Two-SidedPrinting Book Binding Tablet Binding Book Tablet Continue Note: Select Panel 3Using and Caring for Your Print Cartridges Do NOT When Do You Need to Clean If You See Missing Lines or Dots If You See Ink Streaks Manually Cleaning the Print Cartridges and Print Cartridge Cradle Manually Cleaning the Print Cartridges Manually Cleaning the Print Cartridge Cradle Page 4Getting Help When Things Go Wrong The printer software won’t install, what’s wrong What is the problem Possible cause To solve the problem… 4Getting Help When Things Go Wrong The printer software won’t install, what’s wrong? continued Why won’t it print Why won’t it print? continued http: What do the flashing lights mean What do the flashing lights mean? continued Is there a problem with your printout Is there a problem with your printout? continued Paper Type/Quality Ink Controls Revert to Defaults Color Print Printer Softwar e HP Customer Care Repair After the Free Phone Support Period Extended Warranty Options 5Supplies and Accessories 5Supplies and Accessories Paper Type/Description Part Number HP Bright White Inkjet Paper www.hpshopping.com Canada: Elsewhere in the world A Setup Instructions ASetup Instructions 3Insert Print Cartridge 4Connect USB Cable 5Install Printer Software BSpecifications BSpecifications Power Requirements Declared noise emissions in accordance with ISO 9296: Media Weight Media Handling Minimum Printing Margins Custom Paper Size A4-SizedPaper Margins for Letter-, Legal-,and Executive-SizedPaper C Legal Information Limited Warranty Statement HP Year 2000 Warranty Index Index Page Environmental Statement Reduction and Elimination Recycling Product Longevity