To identify and resolve the error, perform the following:
Samples to gather for evaluation :
1. Adjustment data list print - Grid Voltages should vary by line speed and color.
2. Halftone samples of each color run at max density (255) - The density should be uniform with no spotting and should feel smooth to the touch.
3. If connected, a calibration page for the DTP32 densitometer - The gradient ramps should have a good solid fill in the max density blocks and have highlight
fill towards last five or six blocks.
There several conditions that needs to be verified :
1. A failed Printer Control Board - Symptom, Gamma Sensor errors with poor fill and low numbers in both the Grid and Bias Voltages.
2. A failed Overall or Main Control Board - Symptom, 29-22 errors at approximately every 508 prints or copies.
3. A new installation or recent PM - Symptom, faded density in Black or all Colors.
In each condition :
1. Recall standard data for Process Adjustments and Image Quality Adjustments. (For testing purposes do not run any adjustments)
2. Print the adjustment list to verify that all values have been restored to default.
3. Run the halftone samples and calibration page - verify that all density issues are restored to normal.
4. If any image quality issue is present, individual consumables will need to be verified on an individual basis.
Steps to follow after part(s) replacement : (Refer to the Service Manual for specific details)
1. It is recommended to flash all Control Boards if either the Printer Control Board or the Main Control Board has been replaced. (While installed in the
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