Olivetti d-Copia 163MF Service Manual page 61

Problem
(12)No transfer bias
is output.
(13)The message
requesting paper to
be loaded is shown
when paper is
present in the paper
cassette.
(14)A paper jam in
the paper feeding/
conveying section or
fuser section is indi-
cated when the
power switch is
turned on.
(15)The indicator
requesting cover to
be closed is dis-
played when the top
cover is closed.
Y107330-8
Causes
Poor contact of transfer
bias terminal and transfer
bias terminal (J1, J2, J3) on
the engine/high voltage
PWB.
Defective engine/high volt-
age PWB.
Defective paper sensor on
the engine/high voltage
PWB.
A piece of paper torn from
paper is caught around reg-
istration sensor or exit sen-
sor.
Defective registration sen-
sor on the engine/high volt-
age PWB.
Defective exit sensor on the
power source PWB.
Defective interlock switch
on the engine/high voltage
PWB.
Check procedures/corrective measures
(See P.1-5-14).
Replace the engine/high voltage PWB (See P.1-5-14).
Check and remove if any.
Replace the engine/high voltage PWB (See P.1-5-14).
Replace the power source PWB (See P.1-5-14).
Check for continuity across the interlock switch. If there is no con-
tinuity when the interlock switch is on, replace the engine/high
voltage PWB (See P.1-5-14).
Service Manual 1-4-23