Question about Epson Aculaser C1100 Printer

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1. Your website has a mind of it's own. Try typing in 'Service Req E511' & the site scrolls on it's own, not allowing me to select anything. 2. I have the above message flashing. After waiting 5 days for the last part & then trying to catch up, I have this new message. I NEED TO PRINT TODAY! Is there a temporary solution at least for today? Sharon

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Hi Sharon
I wish some of the users posting questions here had minds of there own.
Anyway,, That issue you're having doesn't happen on my machine, I'm able to type willy-nilly (and a whole lot more).
There's a bunch of answers relating to the E511 message on the Epson pages
just click here
hopefully something there will help.

Posted on Oct 08, 2009


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1 Answer

Printer displaying "Service Req E511" and wont print

Error E511 relates to the PCU (not detecting the transfer belt rotating).
This appears to be common. Sometimes the belt can slide on the rollers to the left, thus the square metallic reflective spot on the belt does not pass over the TR0 sensor, no amount of cleaning will cure this, you either need to strip the top cover off hte PCU (6screws) and pull the belt back over to the left or replace the PCU all together. BTW PCU stands for Photoconductor Unit if you didn't know.

Aug 17, 2010 | Epson Aculaser C1100 Printer

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Espon aculaser c1100 service req e511

Error E511 is due to ur photoconductor.. the black transfer belt is out of position... it can be corrected if you know how to open up the photoconductor unit...

May 14, 2010 | Epson Aculaser C1100 Printer

1 Answer

Service Req E511

e511 is to do with the photoconductor unit which sits under the top lid

usually detector underneath the photoconductor dirty or the wide rubber belt then runs throuigh the photoconductor is sligthly off to one side

Feb 24, 2010 | Epson Aculaser C1100 Printer

1 Answer


The "Service Req E511" error message means that part of the photoconductor unit called the transfer belt is not being detected. Please see the following Epson article which may help.

Jan 29, 2010 | Epson Aculaser C1100 Printer

1 Answer

Error: service req E511

Possible parts that caused the error
􀂆 Troubleshooting
􀂄 Photoconductor Unit 􀂄 SENSOR TR-0

Dec 30, 2009 | Epson Aculaser C1100 Printer

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Error service req E511, all lights flashing

Possible parts that caused the error

1 Photoconductor Unit 2 SENSOR TR-0

Dec 28, 2009 | Epson ACULASER CX11NF All-In-One Printer

1 Answer

Service Req E511

E511 is a TRO sensor error (cannot detect rotation of PCU belt), don't panic its probably just a dirty sensor. Turn off & raise the scanner unit fully & open the top printer cover. Lift the orange lever and lift the PCU out of the printer using the strap. First of all turn the PCU onto its back but avoid any bright light on the blue roller (it's called the "Drum" and it is light sensitive and very easily scratched so be careful with it and avoid touching the blue surface if possible). Rotate the white plastic gears at the ends of the drum until a little silver square appears in the cut-away section of the cover, this reflects the light onto the sensor so make sure it is cleaned with a soft cloth. Next look inside the printer and you will see a metal strip running across from side to side, mounted on this is the TRO sensor. Give this a clean also with the cloth. One more thing to clean is the sensor at the back, you will see a small black plastic spring loaded lever, push this down and wipe the sensor. Do not try to lift the lever back into position, it will spring back when the PCU is refitted. Refit the PCU, close the covers and give it a try.
If still not working the cause is either a faulty MCU board or possibly a faulty PCU, but to be sure it will need checking by a repair tech as diagnosis by email is difficult.
Good luck, please take a moment to rate this solution, thanks.

Jul 23, 2009 | Epson Aculaser C1100 Printer

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