Epson Stylus Office TX320F

Motors

The resistance values for the CR motor and the PF motor are given below, however, the values cannot be used to check the motors status since they are DC motor and the resistance between the electric poles varies. Visually check the motors for abnormal operation and if it is hard to judge, replace the motor.

Motor resistance and check point

Motor	Motor Type	Drive Voltage	Resistance
CR motor	DC motor with brush	DC 42 V ± 5 %	22.7 Ω ± 10 %*1 28.8 Ω ± 10 %*2
PF motor			21.2 Ω ± 10 %
Scanner motor	2-phase, 96-pole PM stepping motor		43.0 Ω ± 10 %*5 38.0 Ω ± 10 %*6
ADF motor	4-phase 96-pole PM stepping motor		29.3 Ω ± 7 %(per phase at 20°C) *3*5 28.0 Ω ± 7 %(per phase at 25°C) *4*7

Note
*1 :WokForce 310/520 series only.
*2 :WokForce 320/325 series only.
*3 :WokForce 310/320 series only.
*4 :WokForce 520/325 series only.
*5 :Manufactured by Oki Electric Industry Co., Ltd
*6 :Manufactured by MITSUMI ELECTRIC CO., LTD.
*7 :Manufactured by NMB Mechatronics Co.,Ltd.

Sensors

Sensor check point

Sensor name	Check point	Signal level	Switch mode
PE Sensor	CN15/Pin 1 and 2	Less than 0.4 V	Off: No paper
		More than 2.4 V	On: Detect the paper
Cover Open Sensor*	CN16/Pin 1 and 2	Less than 0.4 V	Off: Cover Close
		More than 2.4 V	On: Cover Open
ADF PE Sensor	CN18/Pin 1 and 5	Less than 0.4 V	Off: Document not passing
		More than 2.4 V	On: Document passing
ADF DOC Sensor	CN18/Pin 1 and 3	Less than 0.4 V	Off: Detect the document
		More than 2.4 V	On: No document

Note * :WokForce 310/520 series only.