sc721-42 mpc5504 sr3220

[hanspeter75]

this error exists temporarily at the sorter. where is this motor on the parts catalog...? another idea what else could it be?
gruss

[slimslob]

Re: sc721-42 mpc5504 sr3220

Which finisher? Do not want to give you information for the wrong finisher.

[FrohnB]

Re: sc721-42 mpc5504 sr3220

SC721-42 B Stapler Retreat Motor Error
During movement to home, the home position could not be detected withina predetermined pulse (1st time is jam notification, 2nd time is SCnotification)
. During movement from home, the home position was detected even after a predetermined pulse elapsed (1st time is jam notification, 2nd time is SCnotification)
. During movement from home, retreat sensor ON could not be detected even after a predetermined pulse elapsed (1st time is jam notification,2nd time is SC notification)
. During initialization, retreat sensor ON was detected simultaneously when the home position is detected (1st time is jam notification, 2nd time is SC


Could be a defective motor. The only 2 motors in the staple unit area are P/N: D5865640 and D6865630.
Could be that the stapler unit is not moving freely and is putting extra load on the motor.
Defective Home Position Sensor for the stapler unit.


Check if the SC occurs by opening/closing covers, and input/output check. If the SC occurs again, do the following steps.
Check if the SC reoccurs by cycling the power after each step
.The target parts are the motor and related HP sensor that SC occurred.
1. Check if the connector of the target part is connected securely. Reconnectthe connector if it is disconnected, or loose.
2. Check the harness for the target part. Replace the harness if it is disconnected, or damaged.
3. Check in input and output modes if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects.
4. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

[anothertech]

Re: sc721-42 mpc5504 sr3220

I've read that it can be caused by to wires going to the stapler pulling loose, caused from the stapler going back and forth. Sometimes the harness is a little short and pulled too tight.

[hanspeter75]

Re: sc721-42 mpc5504 sr3220

@slimslob sr3220
yeh....i do order the 2 motors and the wire.
I hope it helps...let me know then

[slimslob]

Re: sc721-42 mpc5504 sr3220

@slimslob sr3220
yeh....i do order the 2 motors and the wire.
I hope it helps...let me know then

If you have the C5504 service manual both the motor and the retreat sensor are shown in the Stapler displacement mechanism portion of the section on the finisher. I hope that is one of the motors you ordered. The sensor could also be the problem.

[Zaxxon]

Re: sc721-42 mpc5504 sr3220

Check if the lock pin is bend (the one holding the unit locked when paper jammed).

[hanspeter75]

Re: sc721-42 mpc5504 sr3220

I do not quite understand?

[Gift]

Re: sc721-42 mpc5504 sr3220

I'll give the stapler harness a +1, we had quite a few ones going faulty

[Zaxxon]

Re: sc721-42 mpc5504 sr3220

I do not quite understand?

There is a little metal pin/pahl holding the entire drawer locked, when machine runs. This pin can be bend and cause sc721-42

[hanspeter75]

Re: sc721-42 mpc5504 sr3220

do you mean this one?

[Zaxxon]

Re: sc721-42 mpc5504 sr3220

do you mean this one?

Yes, if this is bend it can get caught the black plastic things and make this error.