209
6.2.8
SNS PC Board
Each sensor consists of an LED and photo transistor. When documents are placed on the ADF tray or are
moving, a shutter in the document sensor opens. The light from the LED turns the photo transistor “ON”,
and the output voltage from the sensor becomes a “Low” level. With no document on the ADF tray, the
shutter interrupts the light path, and output from the sensor is kept at a “High” level. Operation of the RP
Sensor is exactly the same as the ADF Sensor. The ADF Cover Sensor operation is similar, except that the
output from the sensor is kept at a “Low” level when the cover is closed and becomes a “High” level when
the Printer Cover is opened.
Read Point
Sensor
GND
+5V
+5V
nBPNT
PC3
Shutter
A
K
ADF Cover Sensor
(ILS PC Board)
MPU
CPU
(IC1)
Shutter
PC2
A
K
ADF
Sensor
GND
PC1
Shutter
A
K
SC PC Board
PNL1 PC Board
+5VP
+5VP
PNL CPU
IC1
Содержание Facsimile UF-590
Страница 14: ...14 4 Driver No TWAIN 5 2 Sided Scanning No Items Description Remarks UF 580 UF 780 UF 590 UF 790 ...
Страница 17: ...17 1 4 Control Panel For USA and Canada UF 790 UF 780 790 780 ...
Страница 18: ...18 For Other Destinations UF 590 UF 580 ...
Страница 27: ...27 10 Remove 2 P6A Bushings 316 11 Remove the Eject Roller 303 10 11 ...
Страница 33: ...33 11 Remove 2 Screws 4N 12 Remove the Paper Feed Rollers 518 11 12 ...
Страница 238: ...238 807 807 808 805 804 802 801 811 810 810 809 803 806 K A C D E F G H I J B 8 1 3 4 5 6 7 2 2 2 Fig 8 Cassette ...
Страница 290: ...290 10 9 CCD PC Board 4 3 2 1 D C B A 1 2 3 4 Drawing Name CCD PC Board 1 1 Model UF 580 590 780 790 5V 5V ...
Страница 293: ...293 10 12 Power Supply Unit 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 1 4 Model UF 580 590 780 790 ...
Страница 294: ...294 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 2 4 Model UF 580 590 780 790 ...
Страница 295: ...295 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 3 4 Model UF 580 590 780 790 ...
Страница 296: ...296 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 4 4 Model UF 580 590 780 790 ...
Страница 297: ...297 4 3 2 1 D C B A 1 2 3 4 Drawing Name LVPS 1 1 Model UF 580 590 780 790 ...
Страница 298: ...DZZSM00158 ...