Defective Image Quality - Dell 1600n - Multifunction Laser Printer B/W Service Manual

Troubleshooting
7.5.3 Abnormal noise
• Description There is noise when copy.
Check and Cause
1. Check the Scanner Motor and any mechanical
disturbance.
2. Check the Motor Driver in Driver PBA.

7.5.4 Defective Image Quality

• Description The copied image is light or bad.
Check and Cause
1. Check shading profile.
2. Check the gap between original and scanner
glass.
3. Check printing quality.
Service Manual
7-22
Solution
1. Check the right position of the Scanner Motor, and
check the any mechanical disturbance in the CCD
carriage part.
2. If any driver is defective, replace it.
• Connection PBA U4-1, 19 or U5-1, 19=0V to 24V
swing signal when operating.
Solution
1. Remake shading profile in the tech mode.
2. The gap above 0.5 mm can cause a blurred image.
3. See "Print" troubleshooting.