Samsung ML-6050 Service Manual page 76

Troubleshooting
Fault
Jitter
Description
When printing, image is irregular.
Check
LSU, Motor bracket
Cause
1. LSU hexahedron period
2. Defective motor bracket gears
Solution
1. Replace the LSU.
2. Replace the motor bracket ass'y.
Remark
Others
5-44
Model ML-xxxx
Samsung Electronics