EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C
TROUBLESHOOTING Error Indications and Fault Occurrence Causes 85
Confidential
Table 3-22. Check point for the defective printing quality
Print Quality State Detailed phenomenon
Defective
unit/part name
Check point Remedy
• Dot missing and
mixed colors
Ink is scarcely ejected to the Cap from
the Printhead.
Ink System Unit
(Cap Unit)
1. Check if there is not any foreign material/damage around
the seal rubber part on the Cap Unit.
1. Remove the foreign material around the seal
rubber parts carefully.
2. Check if the Compression Spring 1.67 is correctly
mounted on the Cap Unit.
2. Replace the Ink System Unit with a new one.
Ink is ejected to the Cap from the
Printhead, but the printer does not
recover from the error after cleaning or
ink change.
Printhead
1. Check if it returns to normal by performing CL operation
or replacing the Ink Cartridge.
1. Perform CL operation and the Ink Cartridge
replacement specified times. If it doesn’t work,
change the Printhead with a new one.
2. Check if the Printhead is not damaged. 2. Replace the Printhead with a new one.
Cleaner Blade
1. Check if the Cleaner Blade does not have paper dust or
bending.
1. Replace the Ink System Unit with a new one.
Main Board 1. Check if the Main Board is not damaged. 1. Replace the Main Board with a new one.
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