Epson ActionLaser 1400 Reference Manual page 46

Turn off the printer. Clean the paper path inside the printer
using a clean, soft, dry cloth Be sure to wipe the laser scanner
window, which is located immediately in front of the orange
strip at the bottom of the printer interior.
Horizontal black or white bands or black page
Install a new toner cartridge as described in Read This First.
Uneven darkness
Your paper may be moist or damp. Printing is sensitive to
moisture absorbed by the paper. Do not store your paper in a
humid or damp environment.
Take out the toner cartridge, shake it gently from side to side,
and then reinstall it.
If this does not solve the problem, install a new toner cartridge
as described in Read This First. Then print several pages to
check the print quality.
Toner smudges
Remove the toner cartridge, shake it from side to side to
distribute the toner, and wipe the bottom of it with a clean, dry
cloth.
Turn off the printer. Clean the paper path inside the printer
using a clean, soft, dry cloth. Be sure to wipe the laser scanner
window, which is located immediately in front of the orange
strip at the bottom of the printer interior.
Clean internal printer components by printing three pages with
only one character per page.
If the problem remains, replace the toner cartridge as described
in Read This First.
3-6 Troubleshooting