Scitex FB700 rail motor not moving

[ppnai]

Dear,
I have an HP UV FB700 its been turned off for 2 weeks , now after turning in on I got an error E-HU-3 Rail motor not moving, the rail bar moves from one side only so i cleaned all the encoder strips with the sensors but still the same so I switched the sensors board left and right the problem switch too so i change the not working sensor with the input roll bar I got the same problem and the not working sensor works fine on the input bar, and suggestions please

 

[dasigndr]

I had a similar issue on our HP45500 years ago and it was the stepper motor brushes that needed cleaning.
Remove the brushes and use a compressor to blow the motor out.

 

[ppnai]

I had a similar issue on our HP45500 years ago and it was the stepper motor brushes that needed cleaning.
Remove the brushes and use a compressor to blow the motor out.

Thank you sir for your reply, which motor do you mean , the rail lefting motor ?

 

[dasigndr]

Thank you sir for your reply, which motor do you mean , the rail lefting motor ?

in my case it was the stepper motor that moves the carriage, attached to the long belt. What happened is the brushes got so dirty that they started to give false movements and no movement at times. I would imagine it can happen to any of the motors.

 

[ppnai]

in my case it was the stepper motor that moves the carriage, attached to the long belt. What happened is the brushes got so dirty that they started to give false movements and no movement at times. I would imagine it can happen to any of the motors.

Thank you very much, I'll keep you posted after the cleaning

 

[ppnai]

It didn't work, I cleaned the motor like new with encoder strip and blue belt but it didn't work it still at the start up test it rise from one side only and gives me motor not moving.
Is the firmware update or hard disk chkdsk might solve it?