Epson STYLUS COLOR 580, Service Manual

Page: 64 / 149

EPSON Stylus COLOR 580 Revision A
Troubleshooting Unit Level Troubleshooting 64
.
Table 3-25. Print quality is not good
Print quality is not good
Step
No.
Detail phenomenon Check point Remedy
1
Vertical banding is
appeared against the
CR movement
direction. And it looks
like uneven printing.
1. Check if each
segment is printed
correctly in the nozzle
check pattern.
2. Check if the surface of
the CR guide shaft
dose not have any
sever stain.
3. Check if the surface of
the CR sliding portion
on the Paper eject
frame has enough oil.
4. Check if the CR guide
shaft is assembled in
the correct portion
securely.
5. Check if the surface of
the CR guide shaft is
flat.
6. Check if the surface
of the Paper eject
frame is flat.
1. Perform the CL and
check the nozzle check
pattern.
2. Clean the surface of the
CR guide shaft with the
dry soft cloth and
lubricate G-55 inside the
CR guide shaft. Refer to
Figure 6-4.
3. Clean the surface of the
CR sliding portion on the
Paper eject frame and
lubricate specific amount
of the G-26.
Refer to Figure 6-8.
4. Reassemble the CR
guide shaft into the
mounting slat on the
both side frame and
secure it with Rod
spring. Figure 4-50 and
Figure 4-51.
5. Replace the CR guide
shaft with new one.
6. Replace the Paper eject
frame with new one.
CR movement
direction
G26 lubrication
Table 3-26. Print quality is not good
Print quality is not good
Step
No.
Detail phenomenon Check point Remedy
1 Ditto
7) Check if the rubber
parts are stuck inside the
I/C cover.
7. Stick the rubber parts
inside the I/C cover.
8) Replace the following
parts.
• CR motor
• CR timing belt
• Compression spring 15.7
2
Micro banding appears
horizontally against the
paper feeding direction
and it appears with the
same width.
1. Check if each segment
is printed correctly in
the nozzle check
pattern.
2. Check if the suitable
paper is used
according to the
printer driver setting.
3. Check if the Paper
feed roller is dirty.
4. Check if the following
parts do not have any
damage.
• Combination gear 8.4,
21.6
• Combination gear
9.6,33.6
• Spur gear 35.4.
• Spur gear 15
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
PR roller carefully with
the soft brush
4. Replace the damaged
parts with new one.
5. Replace the Printhead
with new one.
CR movement
direction