Epson Stylus CX7300 - Troubleshooting; Motor and Sensor Troubleshooting

EPSON Stylus CX7300/CX7400/DX7400/NX200/TX200 series/SX200 series/Stylus CX8300/CX8400/DX8400/NX400/TX400 series/SX400 series Revision C
TROUBLESHOOTING Troubleshooting 60
Confidential
3.2 Troubleshooting
3.2.1 Motor and Sensor Troubleshooting
 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.
Note *1 : Manufactured by Oki Electric Industry Co., Ltd.
Manufactured by MITSUMI ELECTRIC CO., LTD.
 Sensors
Table 3-1. Motor resistance and check point
Motor Motor Type Drive Voltage Resistance
CR motor
DC motor with bras
DC 42V ± 5%
28.8Ω ± 10%
PF motor 21.2Ω ± 10%
Scanner motor
2-phase, 96-pole
PM stepping motor
43.0Ω ± 10%
*1
or
48.0Ω ± 10%
*2
Table 3-2. Sensor check point
Sensor name Check point Signal level Switch mode
PE Sensor CN24/Pin 1 and 2
Less than 0.4V Off: No paper
More than 2.4V On: Detect the paper