Samsung SCX-4200 manual Abnormal noise, Defective Image Quality

Troubleshooting

6.2.3 Abnormal noise

•Description There is noise from the Platen when copying.

	Check and Cause		Solution
1.	Check the Scan Motor and gesr.	1.	Check for correct assembly of gear and motor.
			Ensure no parts are fouling and there are no foreign
			objects in the mechanism or scanner path. Replace
			any worn parts
2.	Check the Motor Driver on Driver PBA.
		2.	Replace the main PBA.

6.2.4 Defective Image Quality

•Description The copied image is excessively light or dark

	Check and Cause	Solution
1.	Check shading profile.	1. Redo shading profile in the tech mode.
2.	Check the gap between original and scanner	2. A gap of more than 0.5 mm can cause a blurred
	glass.	image. Ensure cover close correctly. Replace as
		necessary.

3. Check printing quality.

3. See "Print" troubleshooting.

	Service Manual	6-9
Samsung Electronics