Wrong Print Position - Samsung SCX-4200 Series Service Manual

Troubleshooting
6.3 Paper Feed problems – Causes and Solutions

6.3.1 Wrong Print Position

• Description Printing begins at wrong position on the paper.
Check and Cause
Wrong sensor timing caused by defective feed sensor
actuator.
6.3.2 JAM 0
1. Paper does not exit from the cassette.
• Description
2. Jam-0 occurs when the paper feeds into the printer.
L S U
Fuser
Toner Cartridge
CR
DR
OPC SR
EXIT PR
Sensor
PTL
Feed
TR Sensor FR
Empty Sensor
Service Manual
6-10
Check and Cause
1. Check the Solenoid by using Tech
Mode.
MP Sensor
2. Check cassette/MP knock-up plate
and springs.
3. Check paper separator pad
4. Check the pick up roller for
contamination and correct assembly.
5. If continuous clusters occur, check all
rollers between pickup and registration
sensor.
6 If the paper feeds into the printer and
Jam 0 occurs, perform Tech Mode to
check feed sensor.
Solution
Replace the defective actuator
1. Replace the solenoid.
2. Repair / replace as required
3 Clean with soft cloth dampened with
IPA (Isopropyl Alcohol) or water.
Replace if required.
4. Clean with soft cloth dampened with
IPA (Isopropyl Alcohol) or water.
Replace if required
5. Ensure all rollers are clean and free to
operate correctly.
6. Check the SMPS PBA, Main PBA and
all connections. Replace any faulty
parts or the
Solution
Samsung Electronics