Alignment and Troubleshooting
4-74
Service Manual
4.2.7 Copy Problems
1) Black Copy
Description : Black page is printed out when copy.
1. Check the CIS problem in main PBA
Check the CIS harness contact
Remake shading profile in the
tech mode.
2. Check shading profile.
3. Check white/black reference
voltage in Main PBA.
Replace main PBA