Olivetti d-Copia 4003MF, Service Manual

Page: 194 / 487

1-4-32
4000 Polygon motor steady-state
error
After Polygon motor is stabi-
lized, the ready signal is at the
H level for 20 s continuously.
Polygon motor
(LSU) 1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Laser scanner unit and control PWB
(YC15)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the laser scanner unit (see
page 1-5-25).
Control PWB 1. Check the control software and upgrade
to the latest, if necessary.
2. Replace the control PWB and check for
correct operation (see page 2-2-12).
4200 BD steady-state error
The BD signal is not detected.
PD PWB (LSU) 1. Confirm that the FCC wiring connector is
not distorted and connect the FCC
wiring all the way in.
Laser scanner unit and control PWB
(YC16)
2. If the FCC wiring is disconnected,
shorted or grounded, replace the FCC
wiring.
3. Replace the laser scanner unit (see
page 1-5-25).
Control PWB 1. Check the control software and upgrade
to the latest, if necessary.
2. Replace the control PWB and check for
correct operation (see page 2-2-12).
5100 Chager current error
When the current value mea-
sured at the time of potential
adjustment is less than 20
μ A.
The error of the charge cur-
rent before toner installation.
The error of the charge cur-
rent before printing.
Connector cable or
poor contact in the
connector Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Chager unit and high voltage PWB
High voltage PWB and control PWB (YC19)
High voltage PWB Replace the high voltage PWB and check
for correct operation (see page 2-2-36).
Control PWB Replace the control PWB and check for cor-
rect operation (see page 2-2-12).
Code Contents Related parts
Check procedures/
corrective measures
Service Manual
Y116540 -5