Question 1

my phone and laptop can't find the tr8620a for airprint anymore, it just disappeared from the network.

Accepted Answer

DIAGNOSIS The printer's wireless connection has dropped or its network services have stopped. Check the physical indicator first. FIX Look at the printer's Wi-Fi indicator lamp. If it is off, wireless is disabled. Press and hold the Wi-Fi button on the printer until the lamp flashes blue. Wait for it to turn solid. If flashing orange, the connection failed. Restart your router, then restart the printer. IF THAT DIDN'T WORK Reset the printer's network settings. On the control panel, navigate to Device Settings > Reset Settings > Reset LAN Settings. Confirm. Then re-run wireless setup using the WPS method or the Canon PRINT app. HEADS UP AirPrint and similar services require a stable connection to the same subnet. Ensure your devices are not using a guest network or a VPN, which can isolate them from the printer.

Question 2

prints from my canon all-in-one have weird colored lines and streaks all over them, just started.

Accepted Answer

DIAGNOSIS The printhead nozzles are clogged. Dried ink is blocking the fine channels, causing misdirected ink drops. FIX Run the deep cleaning utility. On the printer's screen, go to Setup > Maintenance > Deep Cleaning. Select the color group showing issues, or run for all colors. This uses a significant amount of ink. Print a nozzle check pattern after to verify results. IF THAT DIDN'T WORK Perform manual printhead cleaning. Dampen a paper towel with distilled water. Place it in the tray. Move the printhead to the center position (via printer maintenance menu). Gently dab the printhead nozzles onto the damp towel for 60 seconds. Do not rub. Run a nozzle check. HEADS UP Frequent deep cleaning wastes ink. If clogs persist after two attempts, the printhead may be damaged. Using non-Canon ink significantly increases clogging risk.

Question 3

the touchscreen on my tr8620a is totally unresponsive, buttons don't work, it's just frozen.

Accepted Answer

DIAGNOSIS The printer's main logic board or touch panel controller has locked up. A full power cycle is required to clear the state. FIX Press and hold the printer's Power button for at least 10 seconds. The display may go blank. Release the button. Unplug the power cord from the rear of the printer. Wait for two full minutes. Plug the cord back in and press the Power button to turn it on normally. IF THAT DIDN'T WORK Perform a factory reset. With the printer on, press and hold the Stop button and the Power button simultaneously. Hold for 10-15 seconds until the screen changes. Release and use the hardware buttons (if functional) to navigate and confirm the reset. HEADS UP A persistent unresponsive screen often indicates a failing control panel assembly. If the reset does not work, the hardware likely needs replacement.

Question 4

my printer says 'ink absorber full' with an error 5B00, can i fix this or is it dead?

Accepted Answer

DIAGNOSIS The internal waste ink pad has reached its estimated capacity. This is a maintenance counter, not a physical sensor. FIX The counter must be reset using a service tool. This requires a Windows PC, a USB cable, and the service software (often called Service Tool or SST). Download the correct tool for your model. Connect the printer via USB, run the tool, and select 'Maintenance' then 'Waste Ink Counter Reset'. IF THAT DIDN'T WORK If the error returns quickly, the actual waste ink tank may be saturated. The physical tank is located inside the printer and may need to be replaced or drained by a technician. HEADS UP Resetting the counter does not clean or replace the pad. If ink leaks internally, it can damage the printer. This is a known end-of-life maintenance alert for many Canon printers.

Question 5

the scanner on my pixma tr8620a makes a loud grinding noise when it tries to scan, sounds bad.

Accepted Answer

DIAGNOSIS The scanner carriage is obstructed or its rail is dry. The noise is the carriage motor straining against resistance. FIX Unplug the printer. Open the document cover and the ADF (Automatic Document Feeder). Manually move the white scanner carriage from the right side to the center of the glass. Inspect for any small objects, paper clips, or torn paper bits. Remove any debris. Apply a tiny amount of white lithium grease to the metal rail the carriage slides on. IF THAT DIDN'T WORK The carriage may be misaligned. Perform a scanner reset. With the printer on, open and close the document cover five times in succession, ending in the closed position. Listen for the carriage to re-home. HEADS UP Never force the carriage. If it does not move smoothly by hand with the power off, there is likely a mechanical failure requiring service.

Question 6

trying to connect my tr8620a to wifi, it keeps failing during setup and i have to start over.

Accepted Answer

DIAGNOSIS The wireless setup process is timing out. This is typically due to an incompatible router security setting or signal interference during the handshake. FIX Use the WPS push-button method. Press and hold the Wi-Fi button on the printer's top panel until the alarm lamp flashes once. Within two minutes, press the WPS button on your router. The printer will connect automatically. IF THAT DIDN'T WORK Temporarily change your router's security to WPA2-PSK (AES) only. Disable any concurrent dual-band (2.4GHz/5GHz with same SSID) settings. Run the wireless setup again from the printer's control panel. HEADS UP The Canon PRINT app is required for initial mobile setup. Ensure your phone is connected to the 2.4GHz band of your network, not 5GHz, before starting the app's setup process.

Question 7

canon pixma tr8620a says 'no paper' even though the tray is totally full, it just won't pick it up.

Accepted Answer

DIAGNOSIS The printer's paper feed rollers are slipping. This is almost always due to dust buildup or a worn roller surface. FIX Power off the printer. Remove all paper from the cassette. Dampen a lint-free cloth with water and wring it out completely. Manually rotate the black rubber feed rollers inside the paper cassette slot, cleaning their surface. Let them dry for one minute. Reload paper, ensuring it is under the rear guide and the stack height does not exceed the tab. IF THAT DIDN'T WORK The paper type setting may be incorrect. On the printer's screen, navigate to Setup > Printer Settings > Paper Source Settings. Confirm the Paper Size and Paper Type settings match the media you have loaded. HEADS UP Using paper that is too heavy or textured can cause feed failures. This printer is optimized for standard 20-24 lb plain paper. Exceeding 300gsm often causes this issue.

Question 8

my tr8620a just shows 'error 6000' on the screen and won't print anything, what is this?

Accepted Answer

DIAGNOSIS The printer has detected a paper feed error. The most likely cause is a foreign object or a piece of torn paper jammed in the paper feed assembly. FIX Power off and unplug the printer. Open the rear cover. Remove the paper cassette. Visually inspect the paper path from the rear to the front. Remove any debris or torn paper fragments. Reinsert the cassette and close the rear cover. Plug in and power on. IF THAT DIDN'T WORK The error can also be triggered by a faulty feed roller encoder strip or sensor. Clean the transparent plastic encoder strip inside the printer with a dry, lint-free cloth. Do not use liquid. HEADS UP The error 6000 will not clear until the printer is power-cycled after removing the obstruction. Ensure the rear cover is fully latched closed after inspection.

Canon PIXMA TR8620a All-in-One Printer

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