Ricoh D025 Service Manual page 1284

Tray Operation
Paper height sensor OFF (full upright)
The paper on the tray has pushed the edge depressors to the full upright position.
Normally, removing the paper from the tray restores normal operation. The actuator falls
and the paper height sensor switches ON. This signals the lift motor to raise the tray to the
start position.
An error will occur if an abnormal condition exists:
After the paper height sensor switches ON and the tray lift motor raises the tray, if
paper height sensor does not go OFF after 20 sec., this signals an error and the tray lift
motor will switch OFF.
With the paper height sensor OFF and the tray full sensor OFF, the tray lift motor
lowers the tray. The tray lift motor will switch off if the paper height sensor does not go
ON within 3 sec.
These two errors are counted as the same error. The first occurrence of the error is
considered a jam, and at the second occurrence SC750 (Tray Lift Motor Error) is issued.
To recover from an error:
At the first occurrence of the error after a paper jam error, opening and closing either
the top cover or the stapler door triggers the initial check and restores normal
operation if no problems are detected.
At the second occurrence after SC750 is issued, cycling the main machine off/on may
restore full operation if no problems are detected.
Edge Depressor Solenoid Error
At power on, or while the stack starts being output to the tray (the solenoid starts to go
OFF), if the paper height sensor remains OFF this indicates a solenoid error. When this
error occurs:
All motors switch off.
The error is logged.
The first occurrence is considered a jam, and the second occurrence causes SC751 (Edge
Depressor Solenoid).
To recover from an error:
At the first occurrence of the error after a paper jam error, opening and closing either
the top cover or the stapler door triggers the initial check and restores normal
operation if no problems are detected.
At the second occurrence after SC750 is issued, cycling the main machine off/on may
restore full operation if no problems are detected.
D372 50 SM