Dell 1815dn Service Manual - Page 114

Copy Problems, White Copy, Black Copy

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Troubleshooting 7.5 Copy Problems 7.5.1 White Copy • Description Blank page is printed out when copy. Check and Cause 1. Check the Scan-Cover open. 2. Check shading profile. 3. Check white/black reference voltage in Main PBA. Solution 1. Room light ca transit a thin original. 2. Remake shading profile in the tech mode. 3. Replace U60 if it is defective. • U60-154 = 0.5V • U60-155 = 3.3V 7.5.2 Black Copy • Description Black page is printed out when Copy. Check and Cause 1. Check the CCD problem in Main PBA. 2. Check shading profile. Solution 1. Check the CCD harness contact. 2. Remake shading profile in the tech mode. Service Manual 7-21

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Troubleshooting
Service Manual
7-21
7.5.1
White Copy
• Description
Blank page is printed out when copy.
7.5 Copy Problems
Check and Cause
Solution
1. Check the Scan-Cover open.
2. Check shading profile.
3. Check white/black reference voltage in Main PBA.
1. Room light ca transit a thin original.
2. Remake shading profile in the tech mode.
3. Replace U60 if it is defective.
• U60-154 = 0.5V
• U60-155 = 3.3V
7.5.2
Black Copy
• Description
Black page is printed out when Copy.
Check and Cause
Solution
1. Check the CCD problem in Main PBA.
2. Check shading profile.
1. Check the CCD harness contact.
2. Remake shading profile in the tech mode.