Original Size Detection; Outline; Original Tray Width Sensor - Toshiba MR-2017 Service Manual

3.2

Original Size Detection

3.2.1

Outline

When an original is placed on the original tray, the width of the original is detected by the positions of
the original width guides.
3.2.2

Original tray width sensor

The original tray width sensor detects the width of an original placed on the original tray.
It is detected by the brush attached to the rack moving on the original tray width sensor, which is a
board with the different length of the patterns written.
This brush is moved as the original width guide is moved. Signals (TWID0S, TWID1S, TWID2S) are
opened and shorted to SG by this movement.
The combination of these short (= low level) and open (= high level) can determine the width of the orig-
inal.
Sizes detectable in combination of these open and short of the signals are as follows:
TWID2S TWID1S
(Orange) (Yellow)
H H
H H
H L
L H
L H
L L
L L
H (= high level): Open
MR-2017/2020
DESCRIPTION OF OPERATIONS
Original tray width sensor
Fig. 3-3
TWID0S Original width size
(Gray) (LT series)
H LD / LT
L
H ST-R
H LD / LT
L
H 8.5x8.5 / LT-R / KLG / 13"LG
L COMPUTER
L (= low level): Short
3 - 4
06/09
Original width size
-
-
© 2005 - 2009 TOSHIBA TEC CORPORATION All rights reserved
(A4 series)
A3 / A4
B5-R
A5-R
A3 / A4
Postcard
A4-R / FOLIO
B4 / B5