Samsung SCX4521F - B/W Laser - All-in-One Service Manual page 102

6.2.7 Paper rolled in the Toner Cartridge (OPC Drum)
• Description Paper is rolled up in the OPC.
Check and Cause
1. Paper is too much thin.
2. The face of paper is curled.
Samsung Electronics
Solution
1. Recommend to use normal paper.
2. How to remove the rolled in the OPC Drum.
• Remove the paper while turning the OPC
Drum against the ongoing direction.
Troubleshooting
Service Manual
6-7