I just had an experience with "wonky" printing with my Canon i850 that was
cleared up by this procedure given me by Canon on their service line
1) Remove all cartridges
2) Remove the printhead
3) Using a Qtip and rubbing alcohol clean the printhead bottom using liberal
amounts of the alcohol and Qtips
4) Clean the ink nozzle area where the ink tanks are installed using the
same method as above
5) Reinstall the printhead and cartridges
6) Run 2-3 print cleaning cycles
7) Run a nozzle check.
8) If the above fails, call Canon for a new printhead
I hope that this is of some benefit to you.
--
Ron P
Sometimes you're the windshield

Sometimes you're the bug
"tenorbbsp" <(E-Mail Removed)> wrote in message
news:cbc0vg$od0$(E-Mail Removed)...
> My one year old i950 has just begun to refuse to print yellow despite
> changing ink tanks and going through the cleaning routines in the manual.
It
> has had low, infrequent usage (say perhaps once a fortnight).
>
> Does repeated head cleaning (and ink wastage) help?
>
> Can the head be removed and 'cleaned'?
>
> If the answer to the above is no, can the price of £68.00 sterling +
> handling +VAT be bettered anywhere?
>
> Thanks to anyone that may be able to help.
>
> Bruce.
>
>