EN
Troubleshooting the Printing System
7-63
High Voltage Power
Supply PCA is
defective.
Replace the High Voltage Power Supply PCA.
DC Controller PCA is
defective. The DC
Controller supplies the
proper voltage to the
High Voltage Power
Supply PCA.
Replace the DC Controller PCA.
Table 7-20. Gray Background
Possible Cause Action
Paper does not meet
printer specifications
or is stored
improperly.
1. Print a few more pages to see if the problem
corrects itself.
2. Turn over the stack of paper in the tray. Also try
rotating the paper 180°.
3. Check the paper (or other print media) type and
quality. Replace the paper, and advise the customer
to use the recommended paper and store it properly.
Inside of printer is
dirty (toner may have
leaked out of the toner
cartridge).
Clean inside of printer (see Chapter 4). Install a new
Toner Cartridge if leaking.
Printer’s operating
environment does not
meet specifications.
Make sure the printer’s operating environment meets
specifications.
Printing on envelope
seams. Printing on an
envelope seam can
cause a background
scatter problem.
Move the text to an area without seams. If not
printing on seams, try a higher print density setting.
Table 7-19. Faded Print/Bubbles (continued)
Possible Cause Action
