Signs the cap top needs to be changed:
- You come in every morning and are missing a lot of nozzles
- 1 or 2 normal cleaning cycles doesn't recover nozzles
- The waste tank doesn't fill up as often as it used to
- Cartridges are reading empty when there is still ink in them
- It's been a year or more since you changed it
I've been working on machines in the field and helping people all over the country fix their own machines for a while now. The most common situation I see is people see that their nozzles are missing and cleanings don't fix it so they buy a new head. They put the new head in and it won't ink up. Turns out the cap top was just bad all along. I always recommend changing it once per year at least and that way it doesn't sneak up on you like that.