7-18
TROUBLESHOOTING
Samsung Electronics
Service Manual
7.3.10 Vertical Line Getting Curved
• Description
When printing, vertical line gets curved.
Check and Cause Solution
1. If the supply of +24v is unstable in the Main Control board
linking with LSU, check drive by EDC Mode: LSU Check.
2. Chect the Deve PBA in the Toner Cartridge.
1. Replace LSU.
2. Replace theToner Joint PBA.
2. Replace the MainPBA.
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