Gestetner B147, Service Manual

Page: 705 / 1081

TRAY UP/DOWN MECHANISMS
SM 21 B599
Two-T
ray
Finisher
B59
9
Tray 1 release mechanism
When tray 1 is selected for staple mode, tray
1 must be moved down to the lower paper
exit. However, to move past the sensors at
the lower exit, the tray must be moved away
from the finisher.
To do this, the tray 1 shift motor turns until
the cut-out in the gear disk enters the tray
release sensor [A]. At this time, the arm [B]
has reached position [C], and is pushing
against the plate [D], in towards the finisher.
However, the plate is fixed, so the tray
moves out away from the finisher.
Then, the tray 1 shift motor stops, then the
tray 1 lift motor lowers tray 1.
When the tray 1 lower limit sensor is
activated (as described on the previous
page), the tray has moved past the sensors
at the lower exit. The tray 1 shift motor turns
on again until the gear disk activates the
tray shift sensor [E]. This moves the tray
back against the finisher.
Next, tray 1 lifts until the finisher detects that
the tray is at the correct height.
When tray 1 is at the lower exit, the tray lock
solenoid [F] is on, and the lever [G] locks the
tray. This prevents the user from moving the
tray out of position (the first tray has some
play when it is at the lower position).
Before tray 1 goes back to the upper exit
area, the tray lock solenoid [F] turns off to
unlock the tray. In addition, the back fence
lock clutch [H] turns on to hold the back
fence [I]. This prevents the springs inside
the back fence from suddenly contracting
(these springs normally keep the tray steady
during side-to-side shift).
Then, tray 1 is released and it moves up to
the upper exit area.
B599D201.WMF
B599D202.WMF
B599D203.WMF
[A]
[B]
[C]
[F]
[H]
[I]
[D]
[G]
[E]