Ricoh DD 4450 - ADF Sensor Malfunctions and Symptoms

Electrical Component Defects
SM 6-15 C279
Troubleshooti
ng
Component Condition Symptom
OFF: No
reflected
light
The “P” jam indicator is lit when paper is
fed-in from ADF.
ADF Org Exit
ON:
reflected
light
The “P” jam indicator is lit.
OFF: No
reflected
light
The “P” jam indicator is lit when paper is
fed-in from ADF.
ADF Org Feed Cover
Open The “close the ADF cover” indicator is lit.
Shorted
The original is fed, even if the ADF cover
is open. Therefore the “P” jam indicator is
lit
ADF Lift Up
Open
The Platen Cover is read even if the ADF
has an original and the ADF is not lifted.
Shorted
The original is fed, even if the ADF cover
is open. Therefore the “P” jam indicator is
lit