Canon DADF K1 problem copying 1/3 sheet after first pass

[copierpro]

I have a C3220 we took in finally got the C1 straight with some help here and the DADF K1 works great - if you are feeding one original.

Stack 10 and generally first one or two out are full copies then those that follow are 1/3 page copies and some blank.

Any advice appreciated. Thanks in advance.

[D_L_P]

Those have the old white belt. I've seen that before and usually you just have to clean the glass and belt.

We used brillianize on the glass, it was a wax and anti-static. RainX might work too but don't use alcohol or windex, the paper should glide very freely over the glass. The belt you can use just about anything, water or alcohol. Last resort you might have to replace the belt.

[teckat]

I have a C3220 we took in finally got the C1 straight with some help here and the DADF K1 works great - if you are feeding one original.

Stack 10 and generally first one or two out are full copies then those that follow are 1/3 page copies and some blank.

Any advice appreciated. Thanks in advance.

check that pickup roller unit in the photo./clean or replace
also the Sep. Pad below it becomes worn/paper is not driven all the way to glass

557-5742_IMG..JPG

[iRC]

I have a C3220 we took in finally got the C1 straight with some help here and the DADF K1 works great - if you are feeding one original.

Stack 10 and generally first one or two out are full copies then those that follow are 1/3 page copies and some blank.

Any advice appreciated. Thanks in advance.

Have you checked the scanner motor?
I had same issue with iRC3200. First we thought that the problem is in the DADF, and we replaced it with another one, but it didn't help at all. Then we noticed that the scanner itself had problems; it wasn't moving smoothly. Replacing scanner motor solved the issue.

I hope this advice helps you!

[roho]

That model is a monster for double feeding. Canon has a modified sep pad-not much better. I've increased spring tension, and in one case did a skin transplant from a pad that had more texture. On machines that had send, or used the feeder a lot I would replace the pad often.

[teckat]

Have you checked the scanner motor?
I had same issue with iRC3200. First we thought that the problem is in the DADF, and we replaced it with another one, but it didn't help at all. Then we noticed that the scanner itself had problems; it wasn't moving smoothly. Replacing scanner motor solved the issue.

I hope this advice helps you!

that delay would cause an clock pulse error code from Scanner Motor

[iRC]

that delay would cause an clock pulse error code from Scanner Motor

Yep, that's what we also thought at first, but the machine didn't show any codes.

[teckat]

Yep, that's what we also thought at first, but the machine didn't show any codes.

Thanks, I forgot that the interface Pcb. also acts as the Scanner motor driver pcb./when u replace the Scanner Motor u should also replace the pcb.
they cause weird issues with regular scanning, and scanning from DADF. with no error codes. This DADF on this model is probably one of the most troublesome out there.

[copierpro]

K1 checks

I cleaned glass with rainex and cleaned belt with alcohol. No go. Cleaned the pickup roller with alcohol feeding well but still getting partial copies.

Will clean sep pad or replace.

Had another doc head used and did same thng BUT as it is used probably had same pickup/sep pad issues.

I could take a look at scanner motor more closely but I always try the simple stuff first. Wouldn't it be throwing off a code if the motor was out of phase?

[teckat]

I cleaned glass with rainex and cleaned belt with alcohol. No go. Cleaned the pickup roller with alcohol feeding well but still getting partial copies.

Will clean sep pad or replace.

Had another doc head used and did same thng BUT as it is used probably had same pickup/sep pad issues.

I could take a look at scanner motor more closely but I always try the simple stuff first. Wouldn't it be throwing off a code if the motor was out of phase?

not always with error codes/ because on the fuse pcb in this machine , if there is a low voltage across fuse , it causes many issues and not always error codes.

remember u also need to set the DADF dip switches to release pressure between roller & bottom pad unit

[D_L_P]

Teckat and Roho made good suggestion. Replace feed/sep pad. Those feeders always did have a weak feed system. The skin transplant from a sep pad with more texture, was it the white one like on the 2200 or 5000? or the black on the 2270 or 5570? Good idea, I wanna try this.

The way I understand it, it only checks for home when you 1st turn it on. After that it ignores the HP sensor and everything is done only by counting clock pulses. So E202 is only going to come when you 1st turn it on, after that if the scanner hangs or slips during copying it won't code out. What I have seen is it will crash into the left wall or copier just sits there thinking indefinitely and/or eventually throws a jam code.

Try cleaning the scan rails, check the set screws and the bearings on the long drive shaft. I've seen one where the bearing was locked up just like a LFR bearing.

[copierpro]

dip switches

I heard about that where where are those dip switches - right side?

[Canuck]

Worst feeder built by Canon...make sure its a K1 and not B1. If replacing feed components dont work,make sure the pre-reg sensor is clean,and the prism on the cover that it uses is clean. Make sure the timing disc on the feed motor(M2) is clean and not cracked,and the photo interrupt that reads it is clean. Look carefully at the timing disc...i have seen them crack where they mount to the shaft. Make sure the drive belts arent slipping and the document belt isnt slipping either. I dont bother with the dip switches....put a paper in,hit start,as soon as pick up rolls drop,open the left cover. You will be able to get the sep pad out now if you push down white lever at front next to pad mount.

[teckat]

I heard about that where where are those dip switches - right side?

get a manual

[candoo]

I agree with the scanner motor theory. I've had the same thing. If you watch the scan lamp under the doc feeder you will see it doesnt return properly and will begin the scan from a new location down the page. Usually you are able to temp fix by cleaning the magnet on the end of the motor, but for a permanent fix replace the motor. I think I've seen somewhere where the magnet has been fixed permanently to the motor for a fix. You may want to try this.