Samsung ML-6050 Service Manual page 45

Error code 1-090
Fault
Ghost (1)
Description
Ghost occurs at 94 mm intervals.
Check
1. Developer cartridge
2. Main body
Cause
1. Contamination of high voltage terminals in the main body , engine board, and / or developer.
2. Transfer roller lifetime has expired.
3. No using recommended recording paper.
4. The Pre-Transfer Lamp (Refer to 18 on page 6-6.)
Solution
1. Open top cover and disassemble the unit and clean contamination components.
2. After replacing the transfer roller, make sure the transfer voltage is normal.
3. Use a recommended type of recording paper.
4. Check for the PTL operation, and if required, check for the main board.
Remark
Others
Samsung Electronics
Troubleshooting
Model ML-xxxx
5-13