Olympus OEP-3, Service Manual

Page: 157 / 176

5-3
OEP-3 V1 (UC)
5-1-2. Sensors
The names and functions of sensors are as follows:
No. Name Type Function
1
Head position sensor Transmission x 4 Detects the position of the head.
Photo-interrupter
2
Head FG sensor Transmission
x
1 Detects rotation of the head motor.
Photo-interrupter
3
Platen home position sensor Transmission x 1 Detects the home position of the platen.
Photo-interrupter
4
Paper feed timing sensor Transmission Detects the paper edge at paper feed time.
Photo-interrupter with arm
5
Direct chuck sensor Reflection Detects paper at the platen chuck.
Photo-interrupter
6
Paper jamming sensor Transmission Detects a paper chuck error.
Photo-interrupter with arm
7
Platen temperature sensor Thermistor Detects the platen ambient temperature.
8
Ribbon take-up FG sensor Transmission x 1 Detects rotation of the ribbon take-up motor.
Photo-interrupter
9
Ribbon supply FG sensor Transmission x 1 Detects rotation of the ribbon supply motor rotation.
Photo-interrupter
0
Ribbon tele-file antenna Board only Transmits the ribbon tele-file information.
!-
Ribbon code sensor Transmission (with write guide) Detects the bar code of each ribbon color.
LED & phototransistor
!=
Ribbon cartridge sensor Transmission Detects the ribbon cartridge.
LED & phototransistor
![
Paper removal timing sensor Transmission x 1 Detects a paper remove error and paper overflow in the paper
Photo-interrupter remove tray.
!]
Paper feed FG sensor Transmission x 1 Detects how much paper is fed.
Photo-interrupter
!\
Tray position sensor Transmission x 2 Detects a tray motor cam position.
Photo-interrupter
!;
Paper sensor Transmission
x
1 Detects paper in the paper feeder tray.
Photo-interrupter