Noise while scanning to email on DF

[Babaknr]

Hi there,
There is a noise on IM C4500 Document feeder (top feeder) while scanning to email with 200 or 300dpi not 400 dpi.
Any ideas please!

[dave w]

sounds like the 400 dpi is going through slower so less stress on something. in the pased I have found noise when manualy moving the rollers/ mech slowly but not when rotating them quickly. this may help you point to the area thats making the noise.

[Babaknr]

Hi,
I tested output check for roller exit drive which makes same sound and replaced the roller, but got no luck.

[Gift]

Back in the days a slippery feed belt could cause noise but I think that's not the case here if you can hear it when turning on the exit roller.

Might be a bushing, idle roller, drive belt push roller but I can't really say what to check first, noise issues are rare with these DF types.

[Babaknr]

Thanks for your idea, I will check a bushing. All DF belts and roller exit drive already replaced.

[RicohBoomer]

On older machines I recall that the ADF would start "screaming" whenever the separation roller had degraded enough.
Unsure if the same symptom happens on the IMC-series since we don't have that many old IMCs out there yet.

[Babaknr]

Thanks, I will check it out again.

[slimslob]

I have encountered motors that make noise only when operated at one of their possible speeds, A two foot length of 1/4 inch copier tubing makes a nice stethoscope for pin pointing the exact source of a noise. One thing, I have had brand new motors be noisier that the original.