Epson Stylus C40UX Service Manual page 54

Stylus C40UX/C40SX/C20UX/C20SX
Table 3-20. Print quality is not good
Step
Detail phenomenon
No.
1. Check if each segment
is printed correctly in
the nozzle check
pattern.
Vertical banding is
Check if the CR rail
2.
appeared against the CR
on the main frame is
movement direction.
not extremely dirty,
And it looks like uneven
etc.
printing.
3. Check if the surface of
the CR sliding portion
on the Paper eject frame
1 has enough oil.
CR movement
direction
G-58 lubrication
4. Check if the surface of
the Paper eject frame is
flat.
Troubleshooting
.
Check point Remedy
1. Perform the CL and check
the nozzle check pattern.
Clean the CR rail on
2.
the main frame and
lubricate G-58.
3. Clean the surface of the
CR sliding portion on the
Paper eject frame and
lubricate specific amount
of the G-58.
4. Replace the Paper eject
frame with new one.
Troubleshooting with LED Error Indications
Table 3-21. Print quality is not good
Step
Detail phenomenon Check point
No.
1 Ditto
1. Check if each segment
is printed correctly in
the nozzle check
pattern.
2. Check if the suitable
Micro banding appears
paper is used
horizontally against the
according to the
paper feeding direction
printer driver setting.
and it appears with the
3. Check if the Paper
same width.
feed roller is dirty.
4. Check if the following
2
CR movement
parts do not have any
direction
damage.
Spur gear 60
PF motor pinion
Revision B
Remedy
5. Replace the following
parts.
• CR motor
• CR timing belt
• Compression spring 11.8
1. Perform the CL and
check the nozzle check
pattern. by using the
Adjustment program.
2. Use the suitable paper
according to the printer
driver setting.
3. Clean the surface of the
PF roller carefully with
the soft brush
4. Replace the Printer
mechanism with new
one.
5. Replace the Printhead
with new one.
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