Ricoh A230, Service Manual, Page: 623 / 1134

M
a
ilBox &
Bridge Unit
G
909/G
9
12
TRAY UNIT
SM 20-25 A230/A231/A232
4.2.4 TRAY EXIT SENSOR ADJUSTMENT
This sensor adjustment must be performed after replacing the tray exit sensor or
main control board, using the special paper that comes as a spare part for the tray
exit sensor.
The tray exit sensor board has two devices: An LED and a phototransistor. So,
when replacing the tray exit sensor on the 3rd tray, the sensor adjustment must be
performed between trays 1 and 3 and between trays 4 and 6. When replacing the
main control board, this sensor adjustment must be performed for all sensors. The
sensor adjustment procedure is as follows.
Example: Sensor adjustment between trays 1 and 3
1. Insert the special paper (which comes with the tray exit sensor) into the
entrance guide of the mailbox.
2. Turn the transport motor gear [A] counterclockwise to transport the paper to the
tray unit.
3. When the leading edge of the paper reaches the tray feed-out roller, turn the
vertical transport motor [B] clockwise to transport the paper to the appropriate
tray.
4. Open the tray gate by pushing the plunger of the tray solenoid [C], and
transport the paper until half of it has fed out to the tray.
5. Change switches 1 and 2 of the DIP switch on the main control board to ON.
6. Make sure that the interface cable is connected to the main machine and turn
the main switch on.
7. Fully turn the appropriate variable resistor (VR) [D] clockwise, then check that
the appropriate LED [E] has turned off (the relationship between tray, VR, and
LED are shown in the table below).
G909R507.WMF
[A]
[B]
[C]
[D]
[E]