Samsung SCX-4100 Service Manual page 84

Digital laser mfp
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7.4.10 Printed Vertical Lines become curved
• Description
When printing, vertical lines are not straight.
Check and Cause
1. Check stability of 24V supply to LSU.
Samsung Electronics
Solution
1. 24V stable - Replace LSU.
24V unstable replace SMPS, if the problem persists
replace the main PBA.
Troubleshooting
Service Manual
7-19

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