Ricoh D023, Service Manual, Page: 1264 / 1522

Jogging (Paper Alignment)
D372 30 SM
In the Two-Staple Mode, both side fences jog the sides of the stack. The diagram above
illustrates the operation of the side fences for stapling at two positions.
Every time a sheet [A] is fed, the front and rear side fences push the sheet to center it.
After the last sheet [B] is centered, the front and side fences push and retract twice (5
mm) to align the sides of the stack centered for stapling.
2.3.3 SIDE FENCE INITIALIZATION
Initialization of the front and rear side fence positions at power on is determined by the
states of the front fence HP sensor and rear fence HP sensor. The descriptions below apply
to both HP sensors.
Paper on Stapling Tray
Initialization is not executed if the paper sensor on the stapling tray detects paper
present.
Fence HP Sensor OFF
The fence motor switches on until the HP sensor goes ON, advances 0.25 mm, then
switches OFF. This is the home position.
Fence HP sensor ON
The fence motor drives the fence toward the center until the HP sensor goes OFF,
advances 15 mm, then switches off. The motor switches ON again, advances the
fence 0.25 mm, then switches off. (This is the home position.)
2.3.4 SIDE FENCE MOTOR ERRORS
A side fence motor error can occur in two cases:
The HP sensor does not go OFF even after the side fence has run long enough to
advance the fence 12.5 mm from the fence home position, far enough to deactivate the
fence HP sensor.
The HP sensor does not go ON even after the motor has run long enough for the side
fence to retract 105.0 mm, far enough for the fence to reach the side fence HP sensor.