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6–18 IBM Network Color Printer Operator’s Guide
Table 10: Black Spots
Step Action
1. Run several full-color gradient test prints from the density control panel (see
“Printing Test Prints from the Density Control Panel” on page 6–24).
• If the spots appear on 1 color only, replace the toner cartridge for that color
(see “Replacing Toner Cartridges” on page 5–4).
• Otherwise, go to step 2.
2. Replace the photoconductor drum cartridge (see “Replacing the
Photoconductor Drum Cartridge” on page 5–33).
3. Make sure that the paper loaded in the printer is free of excess moisture and
meets the specifications listed in “Choosing Paper” on page 2–2.
4. Clean the transfer drum (see “Cleaning the Transfer Drum” on page 8–3).
Table 11: Poor Fusing
Step Action
1. Make sure that the paper loaded in the printer is free of defects and meets the
specifications listed in “Choosing Paper” on page 2–2.
<2-6> CAUTION:
High temperature. Switch off printer power and allow at
least 15 minutes for parts in this area to cool before
handling.
2. Check the fuser rollers for flaws or dirt buildup.
• If you see flaws on the fuser rollers, replace the fuser unit (see “Replacing
the Fuser” on page 5–19).
• If you see dirt on the fuser rollers, try to remove it using the procedure
described in “Cleaning the Fuser Rollers” on page 8–5.
• If you cannot remove all of the dirt, replace the fuser unit.
Table 12: Distortion
Step Action
1. Make sure that the temperature and humidity of the room in which the printer
is located are within the specifications described in the
Installation and
Relocation Guide
.
See the
Installation and Relocation Guide
for correct environmental values.
2. Make sure that the printer is not subjected to vibration.