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HP Colour Inkjet Printer cp1700 Series -Diagnosing a Faulty Printhead

ISSUE: How is a faulty printhead diagnosed?

SOLUTION: Follow the steps below to diagnose a faulty printhead.

1. Turn the printer on and open the printhead access cover. See Figure

1.2. Open the purple printhead latch. See Figure 1.

Figure 1: Opening the printhead access cover and purple printheadlatch

3. Turn off the printer by unplugging the power cable from either the

back of the printer or the power outlet. 4. Remove the printheads by pulling up on the blue plastic handle on

each printhead. See Figure 2.

Figure 2: Removing the printheads

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5. Clean the copper contacts on the back of the printheads with a coffee

filter or clean, dry, lint-free cloth. The contacts are shown in red in

Figure 3.

6. Clean the printhead contacts inside the printer using a coffee filter orclean, dry, lint-free cloth. See Figure 3.

Figure 3: Contact area of printhead and socket

7. Latch the purple printhead cover and close all covers. There should

not be any printheads installed in the printer.

8. Remove the network or parallel interface cable from the printer.9. Plug in the power cable. The printer should turn on. If not, turn on the

printer.

NOTE: Make sure you close all covers after each printhead is inserted in thefollowing steps.

10. The message "ATTENTION: black, cyan, magenta and yellow

printheads are missing" will appear. Insert the black printhead. If afaulty printhead message appears, go to step 14, otherwise go tostep 11.

11. If the black printhead is good, the message "ATTENTION: cyan,

magenta and yellow printheads are missing" will appear. Insert the

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cyan printhead. If a faulty printhead message appears, go to step 14,otherwise go to step 12.

12. If the cyan printhead is good, the message "ATTENTION: magenta

and yellow printheads are missing" will appear. Insert the magentaprinthead. If a faulty printhead message appears, go to step 14,

otherwise continue with step 13.13. If the magenta printhead is good, the message "ATTENTION: the

yellow printhead is missing" will appear. Insert the yellow printhead. Ifa faulty printhead message appears, go to step 14.

14. If a faulty printhead message appears, remove the printheadindicated in the message and clean the contacts with a soft, dry lint-free cloth. Reinstall the printhead and if the message continues toappear after cleaning the contacts, replace the printhead. If theprinthead tests good after cleaning the contacts, continue testing theprintheads at the step the error occurred.