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4-4 Troubleshooting Flow Chart
Vertical black line and band
OK after replacing
developer?
NO
OK after
replacing the LSU?
YES
Any obstacles ON
mirror lens of LSU and
laser path?
YES
Remove the obstacles.
Samsung Electronics
Any obstacles on
YES
the developer blocking
the laser beam.
OK after
removing the
obstacles?
END
NO
NO
NO
YES
NO
YES
Remove part on the paper
path causing the trouble
Replace the LSU
Troubleshooting
Replace the developer
4-5
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Table of Contents
Troubleshooting
