Scanner repair

[mvs sarma]

I ..... After that noise made by the gear on the belt I checked the optical sensor and I obstructed it to see if the motor stop, but nothing happen. I thought that the sensor it doesn't do its job, but after I assemble it again everything works fine, no more noise but the scanned document still have some shadows and just after some scanning a vertical stripe appeared again. By the way, I didn't tell that I don't have the original power adapter(12V/1.5A) and I use another adapter(12V/1A). I checked to see if get hot but looks to work fine.

which sensor you talk about? the one that senses end of page?

 

[4pyros]

By the way, I didn't tell that I don't have the original power adapter(12V/1.5A) and I use another adapter(12V/1A). I checked to see if get hot but looks to work fine.

Can you check the 12 volts while it's running to make sure its not dropping?

 

[Fred Juire]

Is an fork light barrier sensor, I think infrared and is placed under the carriage, after a scanning and the carriage return to the initial point, on the bottom of the case is a piece of plastic which will stop the light to pass from transmitter to receiver. I thought this send the stop command to the controller, it doesn't and I don't know why is there if not for this.How I said, i dismantle the carriage, I start to scan and I introduce a barrier to see if motor stop, it doesn't. I didn't check the voltage, but I'll give it a try.