Ricoh A028 Service Training Manual page 177

1 July 1994 Large Capacity Tray
Tray positioning
As in the main body tray, the stopper and positioning
bracket position the tray.
Stopper
Positioning bracket
Dehumidification
The dehumidifying heater provided on the lower part of
the tray prevents the paper from absorbing moisture.
The heater is designed to come on when humidity
±
reaches 62 3%. The humidity sensor mounted on the
main body turns the heater on, even when the main
switch is turned off.
Dehumidification heater
2-141