Epson TM U200D - B/W Dot-matrix Printer Technical Manual page 91

Table 4-2 Troubleshooting table for bad printing (Continued)
Problem Probable cause
The Ribbon Cassette
is floating .
The print color is
The ribbon is placed
mixed. (Half of
incorrectly.
the character is
black and the
other half is red)
The Frame, ribbon
ass'y is deformed.
The ribbon is
defective.
The Spring, ribbon
release is unhooked or
Color does not
damaged.
change. (Black
to red or red to
The Spring, ribbon
black)
frame is unhooked or
damaged.
Rev. B
TM-U200D/U200PD Technical Manual
Level Checkpoint
Verify that the Ribbon cassette
A
is mounted correctly.
Verify that the ribbon is not
placed between the Print head
A
mask ass'y and Frame, paper
feed ass'y.
Verify that the Frame, ribbon
B
ass'y is not deformed.
Verify that the color of the
A ribbon is not blurred, or the
Ribbon is not rumpled or worm
Verify that the Spring, ribbon
B release is not unhooked or
damaged.
Verify that the Spring, ribbon
B frame is not unhooked or
damaged.
Action
Mount the Ribbon caseate
in the correct position.
(See the "Replacing the
Ribbon Cassette" in
Chapter 3)
Place the ribbon between
the Print head unit and
Print head Mask ass'y.
If it deformed, replace the
Frame, ribbon ass'y.
Replace the Ribbon
cassette if the ribbon is
worn or the print color is
light.
If the spring is unhooked,
hook it back on.
If it is damaged, replace it.
If the spring is unhooked,
hook it back on.
If it damaged, replace it.
Troubleshooting 4-13