FujiFilm CR-IR341, Service Manual

Page: 453 / 1472

CR-IR341 Service Manual MT - 184 009-051-04
05.31.99 FM2460
2 3 4 5 6 1 C
ONTENTS
MT - 184
No. 109 Vertical white streak
• Streaks occur in the subscanning direction.
<Probable Causes>
• Relatively thin streak
Dust deposited on the light-collecting guide or
light-collecting mirror may block the laser beam.
• Relatively thick streak
The light-collecting guide is faulty; shading
correction is improper; the lens mirror (especially,
the dust window) of the scanning optics unit is
soiled.
<Check and Reference>
• Remove the dust deposits using a blower.
• Clean the light-collecting guide or light-collecting
mirror.
• Perform shading correction properly.
"Cleaning Light-Collecting Guide and Light-
Collecting Mirror"
Thin streak
Thick streak
FR1H1858.EPS
No. 303 Jitters
• Sync is misaligned by one or several pixels in the
main-scan direction.
• Such jitters may sometimes occur in the middle
of the scan line.
<Probable Causes>
• The rotation of the polygon is improper.
• The incident beam of the SYN08A board is
misaligned.
• Decrease in the laser power.
<Check and Reference>
• Reset the machine, or power OFF the machine
and then back ON again, to perform self-
diagnostics during machine initialization. If the
results of the self-diagnostics indicate that any
board is faulty, then replace that board.
"Replacing SYN08A Assembly"
• If the error (polygon error 2: 2542) occurred
simultaneously, check and replace the polygonal
mirror assembly.
FR1H1859.EPS