FujiFilm CR-IR341 Service Manual page 642

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C
ONTENTS
9.5 Checking and Replacing Polygonal Mirror Assembly
If anything abnormal is found with the polygonal mirror assembly as result of checks, replace
the polygonal mirror assembly and check it again.
CAUTIONS
• Do not touch the patterns and ICs of various boards.
• When the top cover of the scanning optics unit is removed, use care to prevent admittance of
dust.
• When performing the procedures with the top cover removed, wear a mask to prevent saliva
from sputtering around.
• Use care to avoid shock to the scanning optics unit.
• Do not remove the LD assembly cover, because the LD may be damaged by static electricity.
• Never touch the optical lens and mirror.
• When servicing any printed circuit board, be sure to wear an anti-static wristband to ensure
proper grounding. If not, static electricity built on the human body may cause damage to
electric parts mounted on the board.
Checks To Determine If There Is Anything Abnormal with Polygonal Mirror
Assembly
Check to see that no error occurs during polygon self-diagnostics.
Self-diagnostics is automatically performed during initialization after the machine starts up.
Scan the image and check for any image anomaly.
Scan the IP with a rule exposed, and check to see that there is no image anomaly, such as
jitters, fluctuations, or ununiformity.
009-051-04
05.31.99 FM2460
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CR-IR341 Service Manual
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