5-12 Phaser 6300/6350 Color Laser Printer Service Manual
Light Print in Only One Color
Only one color; yellow, magenta, cyan, or black, is too light on the printed image. The
test print is 25% coverage.
Initial Actions
â– Verify that color calibration has been performed prior to using this
troubleshooting procedure.
â– Check that the Toner Cartridge pull strip is completely removed from the
affected color.
Troubleshooting Reference Table
Applicable Parts Example Print
â– Imaging Unit, PL6.1.1
â– Developer Assemblies, PL7.1.17~20
â– Laser Unit, PL6.1.2
â– Engine Control Board, PL9.1.16
â– Toner Supply
â– Housing Assembly Bias, PL6.1.7
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Is the affected color(s) toner supply
empty? (Check the top of the auger
tube for the affected color.)
Replace the affected
Toner Cartridge
(
page 8-6).
Go to Step 2.
2
Check the Imaging Unit for correct
installation, damage or contamination.
Verify the shipping seals are
completely removed.
Replace the
Imaging Unit
(
page 8-5).
Go to Step 3.
3
Inspect the Developer Bias spring of
the affected color. Compare it to the
other colors. Check for contamination
or damage.
Go to Step 4. Replace the Housing
Assembly Bias
(page 8-77).
s6300-109