What does error e061 indicate?

Since this question is still open, the error means the printer was not found. The cables and printer connection should be checked (or a faulty printer of course). If anyone needs the Casio QT-2100 manuals, one of the users has them here:
http://the-checkout-tech.com/manuals/cashregisters/Casio4.php

Please check if your paper orientation and size in the first cassette matches the copier's display settings. If your machine is set to letter size paper, but you have LD in your first cassette you will get e-061

This is an old fault.I think its a dirty drum sensor.This needs to be cleaned.Your then need to get into service and clear error code

Error :
E061 0122 0222 0322 0422

Workaround :
Depending on the sub code swap the indicated drums pre-conditioning lamps with another drum, if the code moves to the other drum replace the pre-conditioning lamps ( FG5-4326-000 ). If the lamps are viewed while they are in the machine they can appear to look like they are light, the end lamps can be light but the center ones can be out.

check and clean the Primary Charge unit or check all the door actuator check if there is damage .it couldbe the laser gate is not opening because the (door)actuator is broken

its a problem of dirty primary assembly or the corona and grid wires are dirty or check your front door actuators if the laser window is not open,laser can't reach the drum and will result Error 061 hope this will help

Hi.
This is a printer down error. It means you have either programmed the printer incorrectly or it has been disconnected. If you tell me what settings you changed, I may be able to help.

Mark

e061 is a code for a drum charge error on the first drum in line from right to left i think yellow ? any way its either a worn drum broken charge wire if you have not changed drums in a while the other ones may be coding out next

this is a very old machine and canon do not make certain parts any more------01= yellow check corona wire, grid, drum, develpoer replace if necessary

grid bias at upeer limit