Epson TM-U590/U590P Operator's Manual page 32

2. Turn the check over so that it is face down with the MICR
characters on the right-hand side. The MICR characters must be
next to the right edge of the paper inlet.
3. Insert the check straight into the paper inlet, using the right
edge of the paper inlet as a guide.
4. Insert the check as far as it will go. The printer will detect the
check and start drawing it in.
5. When the printer starts drawing it in, let go of the check
immediately. The SLIP light quits blinking but stays on.
6. When printing and MICR reading are finished, the printer
ejects the check and the SLIP light starts blinking again.
7. Remove the check by pulling it straight up; do not pull it at an
angle. The SLIP light goes on.
See Chapter 3 to find out how to clean the MICR mechanism.
Using the Printer 2-5