8.2 Light Printing
8.2 Light Printing
The text and dark areas of the printed image are too light. Light
printing or low density can be caused by the toner or paper supply,
or by a malfunction of the high-voltage supplies or of the transfer
circuits. Perform the following steps and checks:
• The normal position for the density adjuster is the second
detent position from the left, as shown in Figure 1–14.
• Try new paper from a different source. Use a recommended
paper.
• The supply of toner in the EP-L cartridge might be caked
or exhausted. Agitate and lightly rap the EP-L cartridge to
break up compacted or caked toner. Caking happens when the
toner gets damp, or if it has been sitting too long. Damp toner
can dry out if the cartridge is left in a dry room for a day or
so.
• Are the high-voltage connectors of the HVPSA and EP-L
cartridge dirty or damaged?
• Inspect the 10-pin J206 plug that connects to the DC control
board.
• Inspect the 10-pin J601 plug that connects to the HVPSA.
Swap the following FRUs to correct the problem:
1. EP-L cartridge
2. Transfer charging roller
3. Density adjustment board
4. DC control board
5. Video control board
6. HVPSA
8–4 Image Defects FIPS
