Ricoh DD 4450 Service Manual page 176

Electrical Component Defects
Component
Registration Sensor
Paper End Sensor
Cutter HP Sensor
Paper Size Sensor
Paper Length Sensor
C279
Condition
reflected The "A","B" jam indicator is lit and cannot be
light / canceled.
There is a
paper
The "A" jam indicator is lit whenever a copy
No paper
is made.
reflected Printing can begin even if there is no paper,
light / but the "A" jam indicator will be lit.
There is a
paper
The "load more paper" indicator is lit. The
No paper paper table moves down to the lower
position, if it is not at the lower position.
ON E-01 is displayed.
OFF
ON The correct paper size is undetectable if
paper does not match the paper size sensor
pattern.
A size different from the set paper or "*" is
displayed.
OFF
When a master is made in this state, there
may be a size disagreement warning or
solid image.
If paper which should not be detected by
the sensor is set, it is detected, and a size
Reflected
different from the set paper is displayed.
light
The press roller becomes dirty whenever
the paper is shorter than the image.
6-12
Symptom
SM