Quote:
Originally posted by tobster1911
Len, this doesn't sound like a problem with the reader head being worn out, especially if it is functioning properly except for the homing. I would guess that there is a separate electrical path that is supposed to trigger when the registration mark is found. I would suspect a broken solder connection on a pin.
My guess is that the sensor is a hall effect. This would produce a small signal pulse when the reader passes over the reference mark. This needs to be amplified for processing. All of this would be the same for the other read process, I suspect. My guess is that there is some special output line that is reserved for the zero reference. This would be on one of those three boards and feedback to the machine.
You don't happen to have any schematics? It would be possible to suggest some things to check if you have this.
|
We're on the same page. I have the ref. line located in the control box and get continuity all the way back to the read - head connector (I will check from the read-head board this A.M.). I have checked all the lines but I agree it seems like a connection thing. I don't have a schematic, and like I said the mfg. is useless but I can try again and hope for a different idiot. Thanks.