Adjusting the Copy Module Types of Adjustment G Automatic offset adjustment (Flatbed, ADF front, and ADF back) G Density adjustment (do this when Lamps or the Optical Unit are replaced) G ADF vertical magnification (only do this when you replace the ADF Assembly) Note The value of vertical magnification is unique to every ADF Assembly and is noted on a page included with the replacement ADF Assembly. When to Calibrate or Adjust the Copy Module Perform calibration after any of the following tasks:
G Removing or replacing any of the Lamps or optics G Replacing the ADF Assembly G Replacing the Carrier Unit G Replacing the Flatbed Cover Assembly G Replacing the Control PCA with EEPROM Calibration Target Obtain the Calibration Target Kit from HP (part number PA03002- C261FJ) or Blacken a 0.4 inch (10mm) border around a standard A3 size sheet of white paper to create an offset target. A sample offset target is shown in figure 4-6. C4265-90907 Adjusting the Copy Module 175