A read/write error has occurred for the toner cartridge. Remove the toner cartridge and reinsert it. If
that fails to clear the error, replace the toner cartridge. To install the toner cartridge, see “Replacing
Consumable Products/Maintenance Parts” on page 194.
Image Optimum
There is insufficient memory to print the page at the specified print quality. The printer automatically
lowers the print quality so that it can continue printing. If the quality of the printout is not acceptable,
try simplifying the page by limiting the number of graphics or reducing the number and size of fonts.
To clear this error, select
Clear Warning
from the
Reset Menu
in the Setup menu’s
Common
Settings
. See “Accessing the each menu” on page 138 for instructions.
You may need to increase the amount of printer memory to be able to print at the desired print quality
for your document. For more information on adding memory, see “Memory Module” on page
190.
Install Cassette1
/
Install Cassette2
The paper cassette is not installed in the printer.
Install the indicated paper cassette.
Install Toner Cartridge
The toner cartridge is not installed in the printer.
Install the indicated cartridges. See “Toner Cartridge/Return Toner Cartridge” on page 280.
Invalid Data
The spool file on the driver is deleted while printing or the data is abnormal. Select
Close
to clear the
error.
Invalid PS3
There are errors in the ROM module. Turn off the printer and contact your dealer.
“Layout” is set.
You started copying with the layout function. Set the
Layout
setting under the
Advanced
tab to
Off
.
Epson AcuLaser MX21/MX20 Series User's Guide
Using the Control Panel
177