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EPSON Stylus PHOTO 810/820/830 Revision B
Troubleshooting Unit Level Troubleshooting 81
Poor printing
quality
Operation -
Horizontal banding
against CR movement
direction
Lower housing The porous pad for the “no margin” printing comes off.
Refer to Table 3-19
PF motor The accuracy of the PF motor is lowered.
PF roller unit
The PF roller has any foreign material.
The PF roller is damaged
The Spur gear 60 is damaged.
Printer driver The printer driver setting is not suitable.
Printhead Each segment is printed correctly in the nozzle check pattern.
Star wheel mark
Front frame
The Front frame is bent down.
The Star wheel comes off.
Paper eject roller unit The Paper eject roller shaft comes off.
Insufficient top margin LD roller unit The friction of the LD roller is lowered.
Ink Blur
Printer driver The printer driver setting is not suitable.
Printhead The Head ID is not input correctly.
Ink stain
Front frame
The Front frame has the ink stain somewhere.
The Front frame is bent up.
Lower housing
The Lower housing has the ink stain somewhere.
The porous pad for the “no margin” printing comes off.
Paper eject roller unit
The Paper eject roller has ink stain somewhere.
The Spur gear 60 comes off.
Paper guide upper/left The Paper guide upper/left has ink stain somewhere.
PF roller unit The PF roller has ink stain somewhere.
Printhead
The Printhead has the ink drop on the nozzle surface.
The Printhead cover has the ink drop.
Wrinkle ASF unit The Hopper pad/LD pad is correctly not pasted on the dent.
Table 3-18. Poor printing quality
Error condition
Occurrence
timing
CR position at the
power on timing
Phenomenon Unit/Part name Possible cause Check table