Samsung ML-6050 Service Manual page 35

Error code 1-030
Fault
Black horizontal stripes
Description
Dark or blurry horizontal stripes occur in the printing periodically.
Check
Developer cartridge
Cause
1. Bad contacts of the voltage terminals to developer
2. The rollers may be stained with toner particles.
* Abnormal image periodicity :
37.7 mm = Charge roller
31.3 mm = Supply roller
94.2 mm = OPC drum
46 mm = Develop roller
non periodical = Blade
Solution
1. Check all voltages, and adjust as necessary.
2. Check for terminal contacts, and replace the cartridge, if necessary.
Remark
Others
Samsung Electronics
Troubleshooting
Model ML-xxxx
5-3