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EPSON Stylus Photo R340/350
Problems
Description
• Dot missing
Although ink is properly discharged
Mixed colors
from the Print Head to the Cap, the
Blank Pages
problem still occurs even after executing
a head cleaning or replacing ink
cartridges.
• Too much ink is
Ink is properly discharged from the Print
discharged
Head to the Cap, but nothing is printed
even after executing a head cleaning or
replacing ink cartridges. Or too much
ink is discharged.
Troubleshooting
Table 1-14. Print Quality Problems (continued)
Failed Part
Print Head
1. Check if the printer recovers from the error by the head
cleaning or ink cartridges replacement.
2. Check the Print Head for any damage.
Head Cleaner
1. Check the Head Cleaner for paper dust or deformation.
Main Board
1. Check the Main Board for any damage.
Head Cable
1. Check if the Head Cable is correctly connected to the
connector on the Print Head and CN7/CN8 connectors on
the Main Board.
CN8
CN7
Head Cable
Print Head
1. Check if the printer recovers from the error by the head
cleaning or ink cartridges replacement.
Main Board
1. Check the Main Board for any damage.
Troubleshooting
Check Point
1. Execute the head cleaning and ink cartridges
2. Replace the Print Head with a new one.
1. Replace the Ink System Unit with a new one.
1. Replace the Main Board Assy. with a new
1. Correctly connect the Head Cable to the
Connector
1. Execute the head cleaning and ink cartridges
1. Replace the Main Board Assy. with a new
Revision A
Remedies
replacement the specified number of times. If
the problem still occurs, replace the Print
Head with a new one.
one.
connector on the Print Head and CN7/CN8
connectors on the Main Board.
replacement the specified number of times. If
the problem still occurs, replace the Print
Head with a new one.
one.
32

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