Problem Solver 150
User’s Guide
LEVER RELEASED 
LOWER THE PAPER SET LEVER 
The paper lever is in 
the released position.
Move the paper lever to the secured position.
LEVER RELEASED 
LOAD PAPER 
FRONT COVER OPEN
CLOSE FRONT COVER
The front cover is open.  Close the front cover.
INK COVER OPEN
CLOSE RIGHT AND LEFT INK 
COVERS
The ink cover(s) is 
open.
Close the ink cover(s).
INK COVER OPEN
CLOSE RIGHT INK COVER
INK COVER OPEN
CLOSE LEFT INK COVER
NOT ENOUGH CAPACITY
REPLACE THE RIGHT SIDE 
MAINTENANCE TANK
The maintenance tank 
is almost full.
Replace the target maintenance tank with a 
new one. 
 See “Replacing the Maintenance Tank” 
on page 127.
NOT ENOUGH CAPACITY
REPLACE THE CENTER REAR 
MAINTENANCE TANK
NOT ENOUGH CAPACITY
REPLACE THE LEFT SIDE 
MAINTENANCE TANK
NOT ENOUGH INK
REPLACE INK CARTRIDGE WITH A 
NEW ONE
The ink cartridge is 
nearly expended.
Replace the ink cartridge with a new one.
 See “Replacing Ink Cartridges” on page 
122.
MAINT TANK ERROR
REPLACE THE RIGHT SIDE 
MAINTENANCE TANK
The maintenance tank 
is not correctly set in 
the printer.
Replace the maintenance tank.
 See “Replacing the Maintenance Tank” 
on page 127.
MAINT TANK ERROR
REPLACE THE CENTER REAR 
MAINTENANCE TANK
MAINT TANK ERROR
REPLACE THE LEFT SIDE 
MAINTENANCE TANK
MAINTENANCE
PLEASE USE GENUINE EPSON 
MAINT TANK
Non-genuine 
maintenance tank is 
installed.
Replace the maintenance tank with a 
genuine Epson cartridge. 
 See “Replacing the Maintenance Tank” 
on page 127.
MAINTENANCE
NON-GENUINE MAINT TANK MAY 
NOT PERFORM AT OPTIMUM. 
CONTINUE?
<YES NO>
Non-genuine 
maintenance tank is 
installed.
Select NO (press the   button) to replace the 
maintenance tank with a genuine Epson 
maintenance tank. 
 See “Replacing the Maintenance Tank” 
on page 127.
Error messages Description What to do