- Printers
- Inkjet printer
E7
HP E7 on an inkjet printer: ink tank out of ink
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
One or more ink tanks are out of ink. Check which ink icon blinks (cyan, magenta, yellow or black) and refill that tank with the ink specified for your printer.
Safety first
Stop and check this first
- Refill only with the ink HP specifies for your model and follow the manual: the code is about ink level and does not ask you to open the printhead or carriage.
Safe checks you can perform
- Blinking ink icon
- Refill of the indicated tank
- Test print after refilling
Leave these tasks to a qualified professional
- Do not attempt this professional task: Ink system review by HP support
- Do not attempt this professional task: Printhead diagnosis if a colour fails
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Ink system review by HP support
What they doIf E7 stays with a full tank, HP support reviews ink supply and level detection.
They must show youthe test done and its result against HP's specification.
In writingwhat part or setting was changed and a test print without E7.
Printhead diagnosis if a colour fails
What they doIf a colour is missing with a full tank, an authorised technician checks the printheads and their connection.
They must show youthe diagnostic page and printhead test.
In writingpart number of the replaced printhead, reason and a correct test page.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Blinking ink icon
- Who:
- you.
- How:
- look at the panel and note which ink icon or icons blink with E7: C, M, Y or K.
- Result that matters:
- you know which tank to refill.
- If one colour blinks:
- refill only that tank.
- If several blink:
- refill all of them.
- Evidence to keep:
- photo of the panel with E7 and the icons.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
Refill of the indicated tank
- Who:
- you.
- How:
- refill the indicated tank or tanks with the HP ink for your model, following the printer manual.
- Result that matters:
- the icon stops blinking and E7 clears.
- If E7 clears:
- you can keep printing.
- If E7 stays with a full tank:
- note the colour and contact HP support.
- Evidence to keep:
- photo of the full tank and the reference of the bottle used.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
Test print after refilling
- Who:
- you.
- How:
- print a test page in colour and black.
- Result that matters:
- a print with every colour.
- If a colour is missing:
- note which for support.
- If it prints well:
- nothing more is needed.
- Evidence to keep:
- the test page.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Printers
- Brand
- HP
- Product type
- Inkjet printer
Known code variants
- E7 sin tinta HP
- Error E7 HP
- HP E7
- HP E7 error
- HP E7 impresora
- HP out of ink E7
- HP Smart Tank E7
What it means
On HP Smart Tank 670, 720 and 750 printers, E7 appears together with one or more blinking ink icons and means those tanks are out of ink. HP asks you to notice which icon blinks (C cyan, M magenta, Y yellow, K black) and refill the indicated tank. HP separates this state from the very low ink alert, which shows with the Attention and Resume lights. The code concerns ink level, not a printhead or ink system fault.
Warnings and stop conditions
- Loweditorial warning
Refill only with the ink HP specifies for your model and follow the manual: the code is about ink level and does not ask you to open the printhead or carriage.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
Symptoms and causes
Probable causes · in order
- Empty tankConfirmed
This is the cause HP gives. Confirmed because the colour icon blinks with E7 and the tank looks empty.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
- Incomplete refill after the last alertPossible
If you refilled another colour or did not fill the tank, the pending colour icon keeps blinking.
Evidence: HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
Virtual technician
Does E7 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
HP Smart Tank 670, 720, 750, 790 Printers - Blinking lights and error codes
HP Support · official_doc
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