Olivetti d-Copia 6500MF Plus Service Manual page 534

(3) Image is too light.
Print example
Defective part
Paper
1
Drum unit
2
Service Manual
1. Variance in environments (dew formation).
2. Toner is under supplied, or deteriorated in quality.(Under charged)
3. The volatage of the developing bias is too low.
4. The volatage of the transfer current is too low.
5. The power of LSU laser is too low.
6. The surface potential of the drum is too high.
7. The contact pressure at the trasnfer belt and the drum is too low.
Check description
Check that the paper has mois-
ture absorbed. Check that the
paper has stored in a humid
place.
Check that the drum has dew
condensation.
1. Check if the discharging
lamp is dirty.
2. Check whether it is lit.
Cause of trouble
1. If the paper is damp, replace.Choose a dry
place to store paper.
2. If necessary, install a cassette heater.
(see page 1-2-72)
If a dew condensation is observed, perform
drum refreshing.
(System Menu >Adjustment / Maintenance)
1. If the discharging lamp is dirty, clean.
2. If not cured, or it does not light, replace the
drum unit. (Perform U119)(see page
1-4-206
Corrective Action
2N8/2N7
1-3-76
)
Y116520-3