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Blinking Lights on the HP Deskjet 6940, 6940dt, and 6943 Printer Series

Blinking lights
The lights on the front of the HP product can be on, off, or blinking (flashing), depending on the status of the product. The lights indicate product status and are useful for diagnosing printing problems.
    Figure : Lights and buttons on the product control panel
    Graphic: Lights and buttons on the control panel
  1. Power light
  2. Print Cancel button
  3. Resume light
  4. Network light
  5. Report Page button
  6. Print Cartridge status lights
The following sections describe the most common combinations of blinking lights, followed by solutions for each combination. Find the blinking lights pattern you are experiencing, and then follow the steps to resolve the issue.
Issue: The Power light blinks
In this normal condition, the following light pattern displays on the control panel:
  • Power light: Blinking
  • Resume light: Off
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: Off
Figure : The Power light blinks
Illustration : Power light blinks
  • Cause
    The product is preparing to print. The Power light blinks while the product receives the data.
Issue: The Resume light blinks and a message might display on the computer
In this error condition, the following light pattern displays on the control panel:
  • Power light: On
  • Resume light: Blinking
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: Off
Figure : The Resume light blinks
Illustration: The Resume light blinks
  • Cause
    Following is a list of possible causes for a blinking Resume light:
    • The product is out of paper.
    • Paper is jammed in the product.
    • The cartridges are incompatible with the product.
    • The cartridges are not inserted correctly.
How do I resolve this issue? The following sections describe the most common messages that might display on the computer in combination with a blinking Resume light. To resolve the issue, find the message that displays on your computer (from the following choices), and then expand that section for solutions.
Issue: The Power light and one or both of the Print Cartridge status lights are on
The following light pattern displays on the control panel:
  • Power light: On
  • Resume light: Off
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: On
Figure : The Power light and one or both of the Print Cartridge status lights are on
Illustration: The Power light and one or both of the Print Cartridge status lights are on
 note:
The left Print Cartridge status light represents the tri-color cartridge that is installed in the left side of the carriage. The right Print Cartridge status light represents the black or photo cartridge that is installed on the right side of the carriage.
  • Cause
    One or both of the cartridges might be low on ink.
Issue: The Power light is on and one or both of the Print Cartridge status lights blink
The following light pattern displays on the control panel:
  • Power light: On
  • Resume light: Off
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: Blinking
Figure : The Power light is on and one or both of the Print Cartridge status lights blink
Graphic: The Power light is on and one or both of the Print Cartridge status lights blink
  • Cause
    One or both cartridges need to be cleaned or replaced.
Issue: The Power light and the Resume light blink
In this error condition, the following light pattern displays on the control panel:
  • Power light: Blinking
  • Resume light: Blinking
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: Off
Figure : The Power light and the Resume light blink
Illustration: The Power light and the Resume light blink
  • Cause
    A carriage jam has occurred.
Issue: The Power light, Resume light, and Print Cartridge status lights blink in unison
In this error condition, the following light pattern displays on the control panel:
  • Power light: Blinking
  • Resume light: Blinking
  • Network light: Off or on, depending on network connection
  • Print Cartridge status lights: Blinking
Figure : The Power light, Resume light, and Print Cartridge status lights blink in unison
Graphic: The Power light, Resume light, and Print Cartridge status lights blink in unison
  • Cause
    The product needs to be reset.
Contacting HP for service in all countries/regions except Asia Pacific.
If you have completed all the preceding steps and your product still has an issue, service the product.
Go to HP’s Warranty Check Tool to determine if your product is in warranty, and then Contact HP to find authorized service dealers or schedule a repair. If your product is out of warranty, repair fees might apply.

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