Dell 1815DN service manual Abnormal noise, Defective Image Quality

Troubleshooting

7.5.3 Abnormal noise

• Description	There is noise when copy.
	Check and Cause	Solution
1. Check the Scanner Motor and any mechanical		1. Check the right position of the Scanner Motor, and
disturbance.		check the any mechanical disturbance in the CCD
		carriage part.
2. Check the Motor Driver in Driver PBA.		2. If any driver is defective, replace it.
		• Connection PBA U4-1, 19 or U5-1, 19=0V to 24V
		swing signal when operating.

7.5.4 Defective Image Quality

•Description The copied image is light or bad.

Check and Cause	Solution
1. Check shading profile.	1. Remake shading profile in the tech mode.
2. Check the gap between original and scanner	2. The gap above 0.5 mm can cause a blurred image.
glass.
3. Check printing quality.	3. See “Print” troubleshooting.

7-22Service Manual