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Troubleshooting
White Spot
Is it regular
interval of 75.4mm?
YES
Obstacles stuck on OPC's
surface
-> Clean the OPC and
machine or replace
developer
When putting in/out the
developer, scratch is made
-> Replace the developer
4-20
Transfer
NO
voltage is normal?
D/R in developing unit has
the defect
-> Replace the developer
NO
YES
Too high voltage supplied
due to the setting error of
transfer voltage
-> Adjust/replace HVPS
Samsung Electronics
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Table of Contents
Troubleshooting
