Troubleshooting - Samsung SCX-5315F Service Manual

4-6 Troubleshooting

4-6-1 Scanner
4-6-1-1 COPY
PROBLEM
White copy
Black copy
Defective image quality
Abnormal noise
Samsung Electronics
ITEMS TO BE CHECKED.
• Ensure the Scanner cover is closed.
• Check shading profile
• Check the CCD problem in Main PBA.
• Check shading profile.
• Check shading profile.
• Check the original is laying flat on the scan-
ner glass.
• Check printing quality.
• Check the Scanner drive mechanism.
• Check the Motor Driver chip on the driver
PBA.
HOW TO SOLVE
• Room lighting can penetrate thin paper
causing quality problems
• Carry out the "Adjust Shading" procedure
in Tech mode
• Check the CCD harness contact.
• Remake shading profile in the tech mode.
• Carry out the "Adjust Shading" procedure
in Tech mode
• A gap above 0.5mm can cause a blurred
image.
• See "Print" troubleshooting.
• Check scanner carriage, motor, gearbox,
belt and belt tension spring
• If any driver is defective, replace it. - U2-4,
11, 18, 25 signals swing between OV and
24V when operating.
Troubleshooting
4-15