Rev. A
Repair 5-5
EU-T532/T542 Technical Manual
Confidential
Printing is faint.
All printing color is
faint.
Printing density
setting is set to light.
(The color sensitivity
difference
depending on the
paper)
B
•
Check the printing
density setting of the
control circuit module.
•
Check if the specified
paper is used.
Change the setting
of the printing
density to darken.
All or some part
of printing is faint.
(1)Dirt or foreign
matter attaches
to the head
heating
elements.
A
See or check the head
heating elements with
a magnifier.
Clean the head
heating elements if
foreign matter is
attached to the
elements.
(2)Thermal
sensitivity has
deteriorated
due to paper
deterioration
A
Check whether the
paper has
deteriorated.
Replace the
deteriorated paper.
(3)Thermal head
heating
elements are
defective.
B
Check the surface of
the thermal head with
a magnifier.
Replace the thermal
head.
Printing is partly
faint.
Damage or
deformation of the
platen surface
A
See or check with a
magnifier the platen
surface.
Replace the platen
if the platen surface
is damaged or
deformed.
Abnormal or
incorrect
printing
Abnormal or
incorrect printing
(1)Thermal head
input pulse
failure
B
Check with an oscillo-
scope if the input pulse
is within the specified
range.
If the input pulse is
abnormal, replace
the control circuit
board.
(2)Thermal head
failure
(Dr.IC, etc.)
B
If input pulse is
normal, replace the
thermal head.
Paper cannot
be inserted.
Paper cannot be
inserted into the
printer module.
(1)Paper chips or
foreign matter is
in the paper
guide of the
printer module.
A
Check whether paper
chips or foreign matter
is inside the paper
guide.
Remove paper
chips or foreign
matter if there is
any.
(2)Paper detector
on the paper
guide of the
printer module is
defective.
B
Check if the detector
operates properly.
•
Remove paper
chip or foreign
matter if there is
any.
•
Replace the
detector if it is
damaged.
(3)The shape of the
paper edge is
not like the
specified one.
A
Check if the paper
edge is cut properly.
Cut the paper edge
properly.
Table 5-1 Troubleshooting
Phenomenon
Condition
Cause
Level
Where/how to check
Procedure
Содержание EU-T532
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Страница 35: ...2 24 Operation Principles Rev A Confidential ...
Страница 49: ...3 14 Handling Rev A Confidential ...
Страница 55: ...4 6 Maintenance Rev A Confidential ...
Страница 118: ...SEIKO EPSON CORPORATION Printed in Japan ...