Ricoh 1055 Sc 126 error

[yannii33]

We have replaced the polygon motor. The code still kept coming back because the scanner was slamming back to home position. I adjusted the pulley tension and it worked fine for one day until this morning same code Sc126 again. I was also to that the pulley set screw can be broken? Where is that set screw located in the pulley system? or is there another fix for this . please help thank you

[Jomama46]

There was a bulletin out a few years ago about the set screws breaking. There is a new stronger set screw. A293-1713. Scanner slamming can also be caused by the MBU board but the screws are the first check. Also I have had the mirrors chip as a result of he Scanner slamming, it gives a code but dont remember what it is.
Replace all (3) of the screws. (2 on the drive shaft and 1 on the motor)

[jonhiker]

rgc_010.pdf

here's the bulletin that Jomama referred to.

[florintoni]

We have replaced the polygon motor. The code still kept coming back because the scanner was slamming back to home position. I adjusted the pulley tension and it worked fine for one day until this morning same code Sc126 again. I was also to that the pulley set screw can be broken? Where is that set screw located in the pulley system? or is there another fix for this . please help thank you

Ive had a big problem with this model. After 1500k the 2 screws begin to broke. I replaced them but after 200k they broke again and again. I solved the problem only after changed the 2 screws,2 pulley (front drive and rear drive) 2 ball bearing and the drive shaft because the scanner has a big speed and in all these, emerge clearance. also don't forget to check timing pulley and timing belt. Check up on the timing pulley not to be some dirt on it.

[techsass]

sc124 scanner slamming home.pdf

The 700s were notorious for breaking the scanner screws, but the code was sc124, not sc126. I never saw it on a 1055, but since it was basically an updated stepchild of the 700 it probably uses the same parts.

It's usually pretty obvious when a scanner pulley screw breaks. The scanner assy will be crooked. The cause on the 700 was the scanner motor pcb. Ricoh came out with an updated pcb - if you peeled the part # sticker off it had the 850 pcb part # on it. Once we got the machines updated the problem went away. The 1055 I think would have the newer MCU pcb, but pcb's can go bad.

I just went to the local hardware store and bought some grade 3 hex head screws. I think they were M4, but you can just take one of the thinner machine screws with you to match it up.

[tcs04]

Was there a firmware upgrade as well?

[Jomama46]

I dont think so but the latest and greatest is BICU E 0.17 Printer G .58

[florintoni]

One more thing. Did you check the position of 1st scanner ? In replacement and adj. chapter, at scanner unit, you'll find the procedure to adjust the position with the positioning tools. Don't get over it. Check HP sensor too and clean it.

[florintoni]

i have changed the parts i 've been talking about with the follows part no. - hexagonal screw 3x6 A2931713, pulley-rear drive A2941758, pulley-front drive A2941757, drive shaft A2931711, ball bearing 08053368. Of course that scanner assy crooked when the screw breaks, but before this it gives you some trouble like a dark skin line at the very end of copy or error code.