topic Re: PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688 in Desktop Inkjet Printers

PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688

sisgur — Sat, 27 Jun 2026 17:30:56 GMT

I own a Pixma TS6420a printer. The black ink ran out. I bought a new cartridge from Staples. My printer will not recognize it. The support error code is 1688. It says the ink has run out and replace the ink cartridge. I just did that. How do I fix this?

Re: PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688

jrhoffman75 — Sat, 27 Jun 2026 17:34:14 GMT

Check that there is nothing blocking the contacts on the cartridge.

Sometimes the new cartridge is defective, especially if it is a non-Canon cartridge.

Re: PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688

sisgur — Sat, 27 Jun 2026 17:40:00 GMT

I had purchased from Amazon and it said genuine Canon. I have had the issue in the past regarding non Canon ink. I contacted Amazon and they agreed to refund me for the cartridge. I then went to Staples for the purchase. If Staples sells Canon cartridges that are not Canon products that is a major problem. We checked. there is nothing blocking the contacts on the cartridge. It is brand new. I took the tape off and inserted it in the printer.

Re: PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688

jrhoffman75 — Sat, 27 Jun 2026 17:44:25 GMT

@sisgur wrote:

I had purchased from Amazon and it said genuine Canon. I have had the issue in the past regarding non Canon ink. I contacted Amazon and they agreed to refund me for the cartridge. I then went to Staples for the purchase. If Staples sells Canon cartridges that are not Canon products that is a major problem. We checked. there is nothing blocking the contacts on the cartridge. It is brand new. I took the tape off and inserted it in the printer.

No one said "Staples sells Canon cartridges that are not Canon products". Some folks purchase non_OEM cartridges to save money.

Did you take it back to Staples and ask for a replacement? If so and you still have the problem contact Canon support.

Re: PIXMA TS6420a - Replaced Canon black ink cartridge ERROR 1688

sisgur — Sat, 27 Jun 2026 18:12:51 GMT

It was the only one in the store yesterday. Staples stock for my particular printer was very low. They did not even carry a combo pack. I needed to print yesterday and did not have time to wait to order directly from Canon. I will call Canon on Monday.