Question 1

the power light on my pixma mg3620 just blinks and it won't respond to any buttons.

Accepted Answer

DIAGNOSIS The blinking power light is an error sequence. A steady blink means a fatal error. The printer cannot initialize. FIX Unplug the power cord from the wall and from the back of the printer. Wait 2 full minutes. Check the power cord for damage. Plug it firmly into the printer, then into a wall outlet you know works. Do not use a power strip. Press the Power button once. IF THAT DIDN'T WORK The internal power supply or main logic board has failed. There are no user-serviceable parts inside. This requires a technician or replacement. HEADS UP A steady, endless blink after a power cycle is a confirmed hardware failure. Do not attempt to disassemble the power supply. It contains capacitors that hold a dangerous charge.

Question 2

my computer and phone can't find the canon printer on the network anymore. it was working yesterday.

Accepted Answer

DIAGNOSIS The printer's wireless connection has dropped. Its IP address likely changed after your router was rebooted or a device conflict occurred. FIX Re-establish the connection directly from the printer. Press and hold the Wi-Fi button until the light flashes. This puts it in connection mode. On your computer, run the Canon IJ Network Tool (installed with the drivers). It will search for and reconnect to the printer. IF THAT DIDN'T WORK Perform a network reset on the printer. Press and hold the Wi-Fi button AND the Stop button simultaneously for 5 seconds. All lights will flash. Release. This clears all network settings. You must run the wireless setup from scratch. HEADS UP If your router uses MAC address filtering, you must add the printer's MAC address (found on a label inside the cartridge cover) to the router's allowed list after a reset.

Question 3

the scanner part of my all-in-one won't work. it makes a noise but doesn't move or scan.

Accepted Answer

DIAGNOSIS The scanner carriage is stuck or the flatbed cable is damaged. A loud humming noise confirms a mechanical lock. FIX Unplug the printer. Open the scanner unit. Look at the right side. You will see the scanner carriage and a white plastic screw drive. Gently try to move the carriage by hand toward the center of the glass. It should move smoothly. If it's stuck, clear any obstruction. IF THAT DIDN'T WORK The flatbed cable that connects the scanner to the main board may have come loose or failed. This requires disassembly of the scanner unit to inspect. The connector is on the left hinge side. HEADS UP Do not force the scanner carriage. If it moves but the scanner still fails, the stepper motor or control board is faulty. This is a complex repair.

Question 4

all my prints from the canon mg3620 have streaks or missing lines of color.

Accepted Answer

DIAGNOSIS The printhead nozzles are clogged with dried ink. This is the most common issue with inkjet printers that sit unused. FIX Run the deep cleaning cycle from your computer. Open Canon Printer Utility. Select your printer. Go to Maintenance. Select "Deep Cleaning." Run it for the color printhead. Then run it for the black printhead. This uses a lot of ink. IF THAT DIDN'T WORK Manually clean the printhead. Turn off the printer. Open the cartridge cover. Unplug the power cord. Dampen a paper towel with distilled water. Place it flat in the capping station area under the parked printhead. Gently move the printhead onto the damp towel. Let it sit for an hour to soak. HEADS UP Never use tap water or rubbing alcohol. Minerals can cause permanent clogs. If streaks persist after three cleanings, the printhead itself is likely failing and needs replacement.

Question 5

i replaced the ink cartridges but my mg3620 still says it's out of ink and won't print.

Accepted Answer

DIAGNOSIS The printer has not recognized the new cartridges. The chip on the cartridge is not making contact or the printer's memory needs a reset. FIX Turn the printer on. Open the cartridge cover. Press and hold the Stop button for 5 seconds. The carriage will move. Remove and re-seat each cartridge firmly. You should feel a click. Close the cover. The printer will initialize the new cartridges. IF THAT DIDN'T WORK You may have installed cartridges with expired or faulty chips. Only use Canon CLI-281 (color) and PG-280 (black) cartridges. Remove them and check the expiration date on the box. Try another set. HEADS UP Using non-Canon or refilled cartridges can cause this error permanently. The printer may disable the printhead. This is not repairable at home.

Question 6

my printer is making a loud grinding or crunching noise when it tries to print.

Accepted Answer

DIAGNOSIS A foreign object is caught in the carriage path or the printhead carriage is hitting an obstruction. This is a hardware jam. FIX Turn the printer off immediately. Open the scanner unit. Manually move the printhead carriage from its parked position on the right to the center. Inspect the entire track. Look for paper clips, torn paper, or other debris. Remove anything you find. Gently move the carriage left and right to check for smooth travel. IF THAT DIDN'T WORK A piece of paper or label might be jammed deep inside the rear paper feed mechanism. You will need to remove the rear cover. Unplug the printer. Look for the release tabs on the back cover. Remove it to check for obstructions. HEADS UP Never force the carriage. If it does not move smoothly by hand, the carriage encoder strip might be damaged or the motor is faulty. Forcing it can strip the plastic gears.

Question 7

the wireless setup on my pixma mg3620 keeps failing. it won't connect to my wifi no matter what i try.

Accepted Answer

DIAGNOSIS The WPS or standard connection process is timing out. This is almost always a router compatibility issue or an incorrect network password. FIX Use the WPS push-button method. Press and hold the Wi-Fi button on the printer until the light flashes. Within 2 minutes, press the WPS button on your router. Wait for the printer's Wi-Fi light to stop flashing and stay on. IF THAT DIDN'T WORK Connect it via USB cable to a computer first. Install the full driver software from Canon's website. Use the "Wireless Connection Setup" tool in the Canon utilities during installation. It will guide the printer onto the network. HEADS UP This printer does not support 5GHz networks. Ensure you are connecting to your router's 2.4GHz band. The network name (SSID) and password are case-sensitive.

Question 8

my canon mg3620 just shows a solid orange light and won't print or copy anything, what's wrong?

Accepted Answer

DIAGNOSIS The orange Alarm light is solid. This is a definite error state. It means the printhead is jammed, the ink absorber is nearly full, or a paper jam is not fully cleared. FIX Turn the printer off. Open the scanner unit and paper support. Remove all paper from the input tray. Look inside for any torn paper scraps. Clear them with your fingers. Close the unit. Unplug the power cord from the wall for 60 seconds. Plug it back in and turn on. IF THAT DIDN'T WORK The ink absorber counter might be full. This requires a reset. With the printer on, press and hold the Stop button for 5 seconds until the Alarm light flashes twice. Release. The printer will reset the counter. HEADS UP If the Alarm light returns after the reset, the physical ink absorber pad inside is saturated. This requires professional service. Continued use can cause ink leakage inside the machine.

Canon PIXMA MG3620 Wireless All-in-One Printer

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