Ricoh D3EW, Field Service Manual

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2.Detailed Descriptions
136
Paper size Paper Width Sensor LCIT Paper Length Sensor Detection Method
1 2 3 4 1 2
Half Letter LEF 1 0 1 1 1 N.C.
F SEF 1 0 0 1 0 1
B5 SEF 1 0 0 0 0 1
A5 SEF 0 1 1 1 1 N.C.
Half Letter SEF 0 1 1 1 1 N.C.
Postcard SEF 0 1 0 1 1 N.C.
1 means sensor shielded, 0 means sensor transmitted and N.C means No Check (regardless of 1 or 0)
: Can detect paper size automatically via the width and length detection sensors.
: Size can be selected in the UP (SP) mode
Even if a paper size does not appear in the table above, all sizes of paper that can pass through the
copier are considered .
The side fences can slide once their locks are released by squeezing their handles together on both
sides.
The end fence can also slide once its lock is released by squeezing its handle.

Do not force the end fence when making it wider, as failing to squeeze the handle together
may damage the fence.
Paper Tray Lift Mechanism
The pulley on the LCIT lift motor [A] at the back of the paper feed tray winds up the wires that lift the
bottom plate [B]. The mechanism consists of 2 wires of different lengths at the front and rear of the tray,
which work together to keep the bottom plate level as they lift it. The short wire lifts the front of the
bottom plate, while the long wire lifts the rear.
The motor lifts the bottom plate until the paper upper limit sensors [C] detect the surface of the paper,
turning the motor off and stopping the movement of the plate. There are two paper upper limit sensors
and which sensor is used to detect the paper is determined at the timing of a job start.
Paper upper limit sensor 2 on the lower side detects the paper by default. When receiving the start job
of the paper feeding, it is switched to the sensor that is suitable to the paper thickness by the
acquisition of the paper information.
If the surface of the paper drops during printing, it turns the top sensor off, which turns the LCIT lift
motor and lifts the paper. When the paper feed tray is pulled out, the bottom plate drops down by its
own weight.
If the paper feed belt unit [D] (located at the ceiling of the bottom plate) is lifted up too much, the tray
upper limit sensor [E] detects it and generates SC503-015/504-015 “bottom plate over lift”, and stops
the bottom plate at the limit. (If more than two of the units are docked, SC505-115/506-015, SC507-
015/508-015)
If this happens, pull out the paper feed tray to release it.