Ricoh LDD280 - Printing and Pressure Cylinder

ELECTRICAL COMPONENT DEFECTS
C262/C265 4-18 SM
Name State Symptoms
Detects that the table is
closed, but it is open.
The machine displays “Open the paper
table” after the main switch is turned on.
Paper table set sensor
Detects that the table is
open, but it is closed.
The paper table does not move up after
the Print button is pushed.
Detects paper, but there
is no paper
A jam occurs when the Print button is
pushed.
Paper end sensor
Does not detect paper,
but there is paper
The machine displays “Add paper” after
the main switch is turned on.
Detects pressure, but
there is not.
The feed pressure detection board detects
the pressure continually when the print
button is pushed
SC500: Feed pressure motor lock
Feed pressure
detection board
Does not detects
pressure, but there is
pressure.
The feed pressure detection board does
not detect the pressure continually when
the print button is pushed
SC500: Feed pressure motor lock
Detects pressure, but
there is not.
The separation pressure detection board
detects the pressure continually when the
print button is pushed.
SC501: Separation pressure motor
Separation pressure
detection board
Does not detects
pressure, but there is
pressure.
The separation pressure detection board
does not detect the pressure continually
when the print button is pushed
SC501: Separation pressure motor
Stays on (detects a
friction pad, but one is not
there)
If the sensor does not turn off for 5
seconds when the friction pad is changing
to thick paper, SC505 occurs (friction pad
shift motor).
Friction pad position
sensor 1
Stays off (does not detect
a friction pad, but one is
there)
If the sensor does not turn on for 5
seconds when the friction pad is changing
to normal paper, SC505 occurs (friction
pad shift motor).
Stays on (detects a
friction pad, but one is not
there)
A paper jam or double feed occurs,
because the friction pad does not stop at
the correct position.
Friction pad position
sensor 2
Stays off (does not detect
a friction pad, but one is
there)
If the sensor does not turn on for 5
seconds when the friction pad is changing,
SC505 occurs (friction pad shift motor).
4.4.7 PRINTING AND PRESSURE CYLINDER
Name State Symptoms
Stays on (detects that
clamper is open, but it is
not)
If the sensor does not turn off when the
clamper motor is opening and closing the
clamper, SC314 (clamper motor lock)
occurs.
Clamper open position
sensor
Stays off (detects that
clamper is closed, but it is
not)
If the sensor does not turn on when the
clamper motor is opening and closing the
clamper, SC314 (clamper motor lock)
occurs.