Light meaning and fix
Canon MG3620 Alarm Lamp Flashes Four Times
On the Canon MG3620, four orange Alarm lamp flashes mean the cartridge is not installed properly.
On the Canon MG3620, four orange Alarm lamp flashes mean the cartridge is not installed properly.
What it means
The printer has detected that a cartridge is missing, not fully seated, or not installed correctly.
Device details
| Device type | Inkjet printer |
|---|---|
| Brand | Canon |
| Model | MG3620 |
| Light name | Alarm lamp |
| Light location | Operation panel |
| Color | Orange |
| Pattern | Four flashes |
| Severity | warning |
| Last verified | 2026-05-02 |
What to do first
Open the cartridge area and reseat the cartridge until it clicks into place.
- Open the printer cover and wait for the cartridge holder to stop moving.
- Remove and reseat the cartridge.
- Make sure the cartridge is installed in the correct slot.
- Push it into place until secure.
- Close the cover.
- Retry printing after the printer finishes checking cartridges.
When this can be normal
This is not a normal ready state.
When to stop troubleshooting
Stop if the cartridge holder does not move normally or the cartridge appears damaged.
Parts or products that may help
Only replace parts when the light pattern and official guidance support it. Some lights indicate setup or software states, not broken hardware.
- Compatible Canon FINE cartridge: A missing, damaged, incompatible, or improperly seated cartridge can trigger cartridge errors.
FAQ
What does four flashes mean?
Canon lists four flashes for a cartridge that is not installed properly.
Should I buy ink first?
Try reseating the cartridge first.
Can the cartridge be in the wrong slot?
Yes. Make sure each cartridge is in the correct slot.
This guide is based on: Canon MG3620 Flashing Lights.
Source type: official_support_page. Confidence: verified. Last verified: 2026-05-02.
Verify the correct cartridge type for the MG3620 before replacing anything.