Samsung ML-3471ND/XAX Service Manual page 126

Adjustment and Troubleshooting
10) Vertical Line Getting Curved
Description: When printing, vertical line gets curved.
unstable in the Main Control board
linking with LSU, check drive by
Service Manual
4-58
1. If the supply of +24v is
EDC Mode:
LSU Check.
2. Chect the Deve PBA
in the Toner Cartridge.
Replace LSU.
1. Replace theToner Joint PBA.
2. Replace the MainPBA.
Samsung Electronics