Olivetti d-COLOR P2026, Service Manual, Page: 85 / 207

(3) A specific color is printed solid.
Print example Causes
Defective charger roller unit
which corresponds to the
color causing the problem.
Laser of laser scanner unit for
solid color printing is ON.
Defective laser scanner unit.
Check procedures/corrective measures
Replace the drum unit for the color that causes an error
(see page 1-5-20).
Replace the laser scanner unit KM/CY
(see page 1-5-43).
(4) The back side gets dirty.
Print example Causes
Dirty paper conveying path.
Dirty heat roller and press
roller.
Check procedures/corrective measures
Clean the paper conveying path.
Clean the heat roller and press roller.
Dirty secondary transfer roller. Clean the secondary transfer roller.
(5) Image is too light.
Print example
Defective
developing
bias output.
Causes
Defective developing unit.
Defective high voltage
PWB.
Defective engine PWB.
Defective drum unit.
Check procedures/corrective measures
Replace the developing unit for the color that
causes an error (see page 1-5-18).
Replace the high voltage PWB
(see page 1-5-34).
Replace the engine PWB (see page 1-5-26).
Decrease the surface potential by performing
the main charger adjustment (see page 1-3-
14).
When the problem is not cleared, replace the
drum unit (see page 1-5-20).
Replace the high voltage PWB (see page 1-5-
34).
Replace the engine (see page 1-5-26).
Perform the color calibration (Refer to opera-
tion guide).
If the display shows the message requesting
toner replenishment, replace the container.
Shake the toner container vertically approxi-
mately 10 times.
Check the paper storage conditions, replace
the paper.
Defective
transfer
bias output.
Defective high voltage
PWB.
Defective engine PWB.
Defective color calibration.
Insufficient toner.
Insufficient agitation of toner container.
Paper damp.
1-4-31