Ricoh Gestetner 5450, Руководство по обслуживанию, Страница: 51 / 315

1 July, 1998 MASTER EJECT
2-23
Detailed
Descriptions
Homing Operation
At power on or when recovering
from an error or jam condition, the
machine carries out the pressure
plate homing operation.
If certain errors occur, the
pressure plate may not be in the
home position. The homing
operation starts by turning the
pressure plate toward the drum
and then it returns to the home
position.
The homing operation is as
follows:
1. The pressure plate turns
clockwise (as seen from the
operation side) until both the
pressure plate HP sensor [A]
and the limit position sensor
[B] are actuated.
2. As shown in the upper right
diagram, the pressure plate turns
counterclockwise until the home
position sensor [A] is actuated
twice then de-activated. The
status of the sensor [A] changes:
on
⇒
off
⇒
on
⇒
off.
3. The pressure plate has just
slightly passed the home position.
Then, as shown in the lower right
diagram, the pressure plate again
turns clockwise to return to the
exact home position. The home
position sensor status changes
now from: off
⇒
on
⇒
off.
C229D089.WMF
C229D114.WMF
Home
Position
Passed the home
position slightly
[A]
[B]
Passed the home
position slightly
Master Eject
Ready Position
[A]
[B]