MPC 3500 SC 290

[Rick]

This machine just started kicking out this code . I know in the manual is says its a laser shutter problem . I have not seen this before and dont quite know where to tackle this error . Has any one ran into this condition before and if so what was the fix for this ?

[rsyarcia]

Re: MPC 3500 SC 290

SC290 (shutter does not close) and SC293 (shutter does not open) occur
[Symptom]
SC290 (shutter does not close) and SC293 (shutter does not open) occur.
Applicable Models: MPC2500/3000/3500/4500


[Cause]
When the device is left for long periods of time in a low temperature environment, the write unit (the black molding) cover shrinks, the slide load on the shutter and shutter stabilizing screw (shoulder screw) increases, and SC290 or SC293 occur because of the shutter malfunction.

• When parts crossover internally, the problem occurs on the device with the lower limit value.
• With a temperature change of 20 degrees Celsius, the shrinkage is approximately 0.4 mm.
  
  [Resolution]
  
  When the following problem occurs, remove one of the following top screws.
• You can maintain slide-ability even when the mold components have shrunk due to low temperatures by removing the screw.
• Do not lubricate the shutter's shoulder screw with grease. There is a possibility that an abnormal image might be caused by dirt on the toner shield glass.

[rsyarcia]

Re: MPC 3500 SC 290

This machine just started kicking out this code . I know in the manual is says its a laser shutter problem . I have not seen this before and dont quite know where to tackle this error . Has any one ran into this condition before and if so what was the fix for this ?

Sometimes it is better to remove the shutter assembly from the laser unit.

[Rick]

Re: MPC 3500 SC 290

Sometimes it is better to remove the shutter assembly from the laser unit.

Will the machine still function normally without the shutter unit

[ruben]

Re: MPC 3500 SC 290

Will the machine still function normally without the shutter unit

Easily, it is standard procedure for all our machines to have it removed. Saves a lot of hassle in the end. Just make sure your customer or yourself cleans the laser regularly, this should be done with or without the shutter anyway.

[rsyarcia]

Re: MPC 3500 SC 290

[QUOTE=Rick;332676]Will the machine still function normally without the shutter unit[/QUOTE

yes!!

[Debs1964]

Re: MPC 3500 SC 290

Will the machine still function normally without the shutter unit

Yes, but only remove the shutter itself, leave all the rest of the parts in place or you'll get an error code

[turbojetboy]

Re: MPC 3500 SC 290

Removing the laser shutter is good advice, however as you are getting sc 290 error I doubt that this will fix it. The motor and sensor assy are completely independent of the shutter. The main reason for removing the shutter is to cure the random light or blank print issue that this can cause. Good luck - the motor and sensor are nicely hidden away.

[Rick]

Re: MPC 3500 SC 290

Removing the laser shutter is good advice, however as you are getting sc 290 error I doubt that this will fix it. The motor and sensor assy are completely independent of the shutter. The main reason for removing the shutter is to cure the random light or blank print issue that this can cause. Good luck - the motor and sensor are nicely hidden away.

You were right its quite a dig to get at the shutter motor . Any ways I removed the shutter motor inspected it and reinstalled it . I also removed the laser units and removed the shutter assy . left it out and reinstalled everything . The machine worked for 1 print job and then displayed sc 672 I did a reset clr modes 107 clr stop . and it now seem to be working . Not sure why it did a 672 just wondering did I miss something and can i expect this code to come back ?

[fritz.net]

Re: MPC 3500 SC 290

Removing the laser shutter is good advice, however as you are getting sc 290 error I doubt that this will fix it. The motor and sensor assy are completely independent of the shutter. The main reason for removing the shutter is to cure the random light or blank print issue that this can cause. Good luck - the motor and sensor are nicely hidden away.

you can disable the shutter if its removed (or fixed) by setting 2914 -007 to not present

[GIUBOSS]

Re: MPC 3500 SC 290

you can disable the shutter if its removed (or fixed) by setting 2914 -007 to not present

It is no coincidence that later series no longer have that part installed.

[fritz.net]

Re: MPC 3500 SC 290

It is no coincidence that later series no longer have that part installed.

This is an interesting fact, so all/most newer/current series ricoh(like) printers do not have a shutter anymore?

So it is enough to clean it with the blue stroke thing which is located in the front door? (I found out that this is for cleaning the laser glas after I wrote my reply here)

[GIUBOSS]

Re: MPC 3500 SC 290

This is an interesting fact, so all/most newer/current series ricoh(like) printers do not have a shutter anymore?

So it is enough to clean it with the blue stroke thing which is located in the front door? (I found out that this is for cleaning the laser glas after I wrote my reply here)

Yes, but they are more prone to getting dirty in that section, especially at each disassembly for jammed paper release operations or for movement vibrations, etc.

[slimslob]

Re: MPC 3500 SC 290

you can disable the shutter if its removed (or fixed) by setting 2914 -007 to not present

Wake up idiot. You have replied to a thread from 10 years ago on a machine that was introduced almost 17 years ago.

[fritz.net]

Re: MPC 3500 SC 290

Wake up idiot. You have replied to a thread from 10 years ago on a machine that was introduced almost 17 years ago.

nice wording ...

I stumbled on this since I had an issue with this Maschine and needed this info. This maschines may be old, but they still work and are around
I thought I add it for someone else to find it