No Image Appears (Entirely Black); Image Is Too Light - Olivetti d-Copia 3500MF Service Manual

(2) No image appears (entirely black).

Print example
No main
charging.
Exposure
lamp fails to
light.
The laser is
activated
simultane-
ously for all
colors.

(3) Image is too light.

Print example
Insufficient toner.
Insufficient agitation of toner container.
Deteriorated toner.
Defective
transfer
bias output.
Service Manual
Causes
Defective connector cable
or poor contact in the con-
nector.
Defective charger roller unit. Replace the charger roller unit
Defective high voltage
PWB.
Defective engine PWB.
Defective connector cable
or poor contact in the con-
nector.
Defective exposure lamp.
Defective ISC PWB.
Defective main PWB.
Defective laser scanner
unit.
Causes
Defective connector cable
or poor contact in the con-
nector.
Defective high voltage
PWB.
Defective engine PWB.
1-4-62
Check procedures/corrective measures
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB (YC2) and engine PWB
(YC16)
(see page 1-5-31).
Replace the high voltage PWB
(see page 1-5-47).
Replace the engine PWB (see page 1-5-43).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
LED lamp PWB and ISC PWB (CN6)
ISC PWB (YC3) and main PWB (YC11)
Replace the LED lamp PWB (see page 1-5-
19).
Replace the ISC PWB.
Replace the main PWB (see page 1-5-38).
Replace the laser scanner unit
(see page 1-5-24).
Check procedures/corrective measures
If the display shows the message requesting
toner replenishment, replace the container.
Shake the toner container vertically approxi-
mately 10 times.
Perform the drum refresh.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
High voltage PWB (YC2) and engine PWB
(YC16)
Replace the high voltage PWB
(see page 1-5-47).
Replace the engine PWB (see page 1-5-43).
2LL/2LJ/2LH
Y113350-5