On 1/27/2010 10:56 PM, DaveC wrote:
I'm trying to troubleshoot an error with an HP ink jet printer (Photosmart
3210) that says "Ink System Failure". All other components seem functional.

In the printer there is a small PCB with a few soldered components that
appear to sense ink flow or pressure. It is in series with the pump output.

http://i48.tinypic.com/o8xz84.jpg

http://i49.tinypic.com/r76kib.jpg

How does this work? Are these 6 LEDs and photodiodes? Just detecting the
presence of ink doesn't seem likely. Wouldn't movement or pressure be what is
detected?

What does this PCB do and how does it do it?

Thanks.


Two things: Each is its own separate process.

1) Reset the system by holding down the OK, Cancel, Black, and Color
buttons down at the same time and turn the 3310 off. Keep holding
the buttons down until the printer shuts off and the turn it back
on. You will have to turn the printer off twice and then it will
recalibrate. Make sure you have new cartridge in the printer so that
it can reset.

2) There is a patch available for your printer that might fix the
the problem. The link below is to HP's site.

http://tinyurl.com/7jqdc3