Unsharp Printing - Kyocera Ecosys FS-600 Service Manual

Non-sharp printing
Symptom
Check paper for property.
Check the paper chute installation.
Check the transfer roller installation.
Check the transfer bias potential.
Check EcoPrint setting.
Suggested remedy
Paper with rugged surface or dump tends to cause this type of
failure.
The paper chute (the metallic fixture provided between the
transfer roller and the fuser unit for antistatic purpose) must
not be fit loose. Press the paper chute down firmly if
necessary.
The transfer roller must be supported by the axle holders at
two ends. Clean the axle holder to remove oil and debris.
Replace the transfer roller if necessary.
Check the transfer bias output on the high-voltage (KP-543)
board. This requires removal of the left side cover and the test
equipment: For information, contact Kyocera. Replace the
high-voltage board if high voltage potential is not available on
the board.
The EcoPrint mode can provide faint, non-sharp printing
because it acts to conserve toner for draft printing purpose.
For normal printing, turn the EcoPrint mode off by using the
print menu from the application software.
6-30
Troubleshooting
Print quality problems
FS-600/FS-680