I have recently changed the cyan printhead/cleaner on inkjet 1050C but after a couple of weeks the message change printhead appears. I have to manually override by choosing to continue printing for each copy. Any solutions gratefully received.

Hi

Did you check the connections in the carriage if there is little amount of ink on the contacts? if not then clean it well with a dump cloth and try to re-install the old printhead it will sure accept it. If not then the other way is to change system date of the printer first and then try again.

DO RATE MY SOLUTION

This message comes when print head is not fitted or locked properly in the socket, please remove printhead, also check for polythene conver on nozzle that should be also removed.

It's going to cost you ink but your may get it working again.
- Remove all ink cartridges - Remove the printhead itself - Carefully (avoid splashes!) hold the printhead under running warm water until the water runs fairly clear - In a bowl large enough for the printhead, put about 1-1 1/2" (25-40mm) of household plain or 'sudsy' ammonia - Set the printhead in the ammonia and ignore overnight - Repeat the water cleaning - Shake out as much of the water and you can, then allow it to dry for at least 24 hours - Reinstall printhead in printer I have better results starting with fresh ink cartridges but have had to use a removed one now and then.
This is one of the printers that does not object to frequent use but will clog if allowed to sit too long between operations. If your memory is better than mine, do one of the print tests every couple of days.

Open Rh Cover , Remove All the Ph Cleaners
Pull The Tray in Which We Seat the Ph CLeaner , Clean the thin Steel Shaft With a Lint Free cloth ,Insert Ph Cleaners
Check it now if still no go
then Replace service Station

There are two possibilities here Joanne, first, it could be a false error message or else second, the Cyan/Magenta print head has gone bad.Try the following:
1. Take the Cyan/Magenta printhead out. Remember, the printhead...not the cartridges.
Clean the copper contacts with a Q Tip, moistened with plain water. Wait till it dries, put the printhead back in.
2. If this does not resolve the issue, unplug the power cord from the back and press and hold the power cord for 30 sec. This will drain all the static charges. Plug it back after a couple of minutes and see if the error message re appears.

the only way to change the status is to change printheads.

Something (not sure what) is obstructing the movement of the carriage assembly. Turn off the power and remove the cleaners. Push the carriage assembly out and pull/push the belt to move the carriage assembly until you find the bind. If you've recently changed the belt or carriage assembly, make sure you properly adjusted the carriage height.

that error show a problem with the pintheads
Remove ALL the Printheads and clean the flex contacts on the
Printheads and in the Carriage Assembly, if that dont solve the problem change printheads, if after that have the same problem call HP, was a hardware error.

the tube system has an air leak causing a dryfire situation. air + printheads = damaged printheads. most users replace the black printhead more often than the colors. the seal where the printhead feed pin fits into the carriage is the end of the tube system. the hole in the seal becomes to large and doesn't properly seal the air out. order the tube system. complete and concise instructions are included in the box for tube replacement. this is considered an end user replaceable part. good luck! please rate this!

I don't just change the printheads, go to utilities and recover printheads.
If all printheads are playing up, che3ck the magenta cleaner, if it's over full it can cause all printheads to fail, this info was taken from a page on the HP web page, but ?I can't remeber where.