[Error Code] MPC2011 Error SC120 randomly

[mrwho]

Good evening!

I'm posting this in hopes that someone else already had this problem before and can push me in the right direction.

This one machine gives out randomly SC120 errors - it can give it twice during one day and then can go for two or three days without any hicup.

According to the customer it happens mostly when scanning from the ARDF - but they say it also happened when no one was working on the machine.

What we tried so far:

Flash firmware
Replace Scanner belt
Replace HP sensor
Cleaning and lubrication of the optic rails
Replace Scanner Motor
Replace SIO
Check ITB HV contacts
Replace SBU
Replace IPU

What are we missing?

Have a nice weekend everyone.

[guitar9199]

Re: MPC2011 Error SC120 randomly

SC120-00	D	Scanner Home Position error
		The home position is not correct when the main power is turned ON, at the end of a reading process from the exposure glass and ARDF.
		Scanner motor defective Scanner HP sensor defective SBU defective BiCU defective Controller board defective
		Scanner motor defective
		Scanner HP sensor defective Check that the scanner HP sensor is correctly positioned. Reconnect the following connectors. Replace the scanner HP sensor. SBU defective Replace the scanner unit. BiCU defective Replace the BiCU. Controller board defective Replace the controller board.

Something else to check is the ribbon cable. Sometimes you get cracks in the wires and there'll be random strange errors that'll be the bane of your existence.

Good luck,

[JDYAL]

Re: MPC2011 Error SC120 randomly

x2 on the ribbon cables whether its a faulty cable or poor connection it will throw codes

[keithxxiii]

Re: MPC2011 Error SC120 randomly

I had this in MPC3001 and found out the guy who replaced the PTR assembly had 1 screw loose. It gets grounded somewhere. It throws up SC120 when copying/scanning from flatbed.

[AjitN]

Re: MPC2011 Error SC120 randomly

I had this in MPC3001 and found out the guy who replaced the PTR assembly had 1 screw loose. It gets grounded somewhere. It throws up SC120 when copying/scanning from flatbed.

Something same happened with me once, One engineer put longer screw in side cover. So lamp carriage was just able to touch home sensor , due to which machine was giving intermittent home sensor error.
May be this is not be applicable in your case, but worth checking.

Hope this helps

[mrwho]

Re: MPC2011 Error SC120 randomly

Thank you all, I'll visit the customer tomorrow and will add all those tips to my list of things to check out.

What ribbon cable specifically are you refering to?

Cheers!

[mrwho]

Re: MPC2011 Error SC120 randomly

Thank you all, I'll visit the customer tomorrow and will add all those tips to my list of things to check out.

What ribbon cable specifically are you refering to?

Cheers!

Possibly a dumb question, I didn't remember the lamp assy was fed by a ribbon cable - or could you be referring to some other I am missing?

Mondays...

[JDYAL]

Re: MPC2011 Error SC120 randomly

Possibly a dumb question, I didn't remember the lamp assy was fed by a ribbon cable - or could you be referring to some other I am missing?

Mondays...

The lamp assembly ribbon cables were what I had an issue with. Good luck with the beast

[guitar9199]

Re: MPC2011 Error SC120 randomly

Possibly a dumb question, I didn't remember the lamp assy was fed by a ribbon cable - or could you be referring to some other I am missing?

Mondays...

See attached

[slimslob]

Re: MPC2011 Error SC120 randomly

See attached

In the future, please do no attache thumbnails. They are unreadable and loose clarity when enlarged.

[mrwho]

Re: MPC2011 Error SC120 randomly

SC120-00	D	Scanner Home Position error
		The home position is not correct when the main power is turned ON, at the end of a reading process from the exposure glass and ARDF.
		Scanner motor defective Scanner HP sensor defective SBU defective BiCU defective Controller board defective
		Scanner motor defective Move the scanner carriage by hand to check whether it is unusually difficult to move. Check that the scanner driving belt is not disengaged. Reconnect the following connector. Scanner Motor – Controller Board connector If the connector is broken, shorted, or grounded, replace the connector. Replace the scanner motor.
		Scanner HP sensor defective Check that the scanner HP sensor is correctly positioned. Reconnect the following connectors. Scanner HP Sensor – SBU connector SBU – Controller Board connector Replace the scanner HP sensor. SBU defective Replace the scanner unit. BiCU defective Replace the BiCU. Controller board defective Replace the controller board.

Something else to check is the ribbon cable. Sometimes you get cracks in the wires and there'll be random strange errors that'll be the bane of your existence.

Good luck,

Thank you all for your feedback.

When I last went to that customer (12th of December, if I'm not mistaken - EDIT: 15th), the machine hadn't thrown the code since the 6th - so, I checked and re-checked everything I did before, plus the scanner flat cable (disconnected and reconnected it on both ends), and left it at that.

Now the customer is saying the machine is back at it.

Guitar9199, my service manual doesn't mention the Control Board. Is that data you pasted here for the same model?

I think I'll try that next.

Thanks again.

[Maged_elagamy]

Re: MPC2011 Error SC120 randomly

Thank you all for your feedback.

When I last went to that customer (12th of December, if I'm not mistaken - EDIT: 15th), the machine hadn't thrown the code since the 6th - so, I checked and re-checked everything I did before, plus the scanner flat cable (disconnected and reconnected it on both ends), and left it at that.

Now the customer is saying the machine is back at it.

Guitar9199, my service manual doesn't mention the Control Board. Is that data you pasted here for the same model?

I think I'll try that next.

Thanks again.

Hi there
I wonder if u found a solution for this situation