Ricoh G031 Service Manual page 66

PAPER FEED
Paper Size Detection
The paper size switch [A] includes
three sensors (microswitches). The
sensors are actuated by actuators on
a dial [B] behind the paper size
indicator plate.
Each paper size has its own actuator,
with a unique combination of notches.
To determine the paper size, the CPU
reads which switches have been
turned off by the actuator.
The CPU disables paper feed from a
tray if the paper size cannot be
detected. If the paper size actuator is
broken, or if there is no tray installed, the printer control board recognizes that the
paper tray is not installed.
When the paper size actuator is at the "(" mark, the paper tray can be set up to
accommodate one of a wider range of paper sizes by using a user tool at the
machine's operation panel.
North America
8 " x 14" Portrait
1/2
A4 Landscape
8 " x 11" Portrait
1/2
(
8 " x 13" Portrait
1/2
8 " x 11" Landscape
1/2
11" x 17" Portrait
Paper End Detection
When the paper tray runs out of paper, the feeler of the tray paper end sensor
drops into the cutout in the tray bottom plate and this activates the paper end
sensor [C].
Paper Near End Detection
When almost 50 sheets are left on the tray, the tray bottom plate pushes up the
feeler of the tray paper near end sensor [D]. However, there is no indication on the
printer's operation panel; the signal is only for use by the host computer.
G031/G032
Models
Europe
A5 Landscape
A4 Landscape
A4 Portrait
(
8 " x 13" Portrait
1/2
8 " x 11" Landscape
1/2
A3 Portrait
2-22
[C]
[D]
Switch Location
Left
On
On
On
Off
Off
On
Off
On: Pushed Off: Not Pushed
[A]
[B]
G031D519.WMF
Center Right
On On
Off Off
On Off
On On
On Off
Off On
Off On
SM