ricoh mpc4500 - White copying

[rich1106]

Hi!
I have a ricoh MPC4500. When I want to copy or print a counter. not show the image on the sheet goes completely white. Transfer has been checked, the OPC modules, engines.

Everything works perfect. Any suggestions about this problem?

Thanks for your help!

[Max]

blank copy?

[slimslob]

Have you checked the laser shutter? It might be stuck closed. Some techs like to remove it.

[ruben]

Just in case, do a memory clear on Printer Application. (You will need to redo the ACC for printer afterwards.)
Go to Printer SP and print out a colour test pattern. If it is blank then you have a laser or TX problem, if only black is missing then you could have a shutter or PCU problem.

[rich1106]

Thank you all for your reply!

blank copy?

Yes, Blank Copy

Have you checked the laser shutter? It might be stuck closed. Some techs like to remove it.

I already changed the laser unit. and blank copy continuous

Just in case, do a memory clear on Printer Application. (You will need to redo the ACC for printer afterwards.)
Go to Printer SP and print out a colour test pattern. If it is blank then you have a laser or TX problem, if only black is missing then you could have a shutter or PCU problem.

I tried your suggestion. And I printed the test pattern And it is blank... I already changed the laser unit.

Again, thanks for your help. Another suggestion?

[skynetto]

Still in laser section: does the shutter motor works? check 2914-007 if it is set to NO.

[PA3040]

Stop the machine while on copying and check the ITB and Four drum latest the image is developed on

[godwin2017]

Stop the machine while on copying and check the ITB and Four drum latest the image is developed on

Please have you considered replacing the BICU board? Anyways I'm also facing same situation here. Blank copy everything about the machine is ok but still I'm facing the blank copy issue. Any help would be appreciated. Thanks!!

[Polarbear]

Stop the machine while on copying and check the ITB and Four drum latest the image is developed on

+1

This is the only logical way to start troubleshooting. For all you know, it tore the ITB belt right off the frame (have seen this before) and the machine will sit pretty and say nothing.