Troubleshooting; Motor And Sensor Troubleshooting - Epson Stylus OFFICE B30 Service Manual

EPSON Stylus C110/C120/D120/WorkForce 30/EPSON Stylus OFFICE B30/T30/T33/ME OFFICE 70

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.
Table 3-1. Motor Specification
Motor Motor Type
CR motor
DC motor with brash
PF motor
Table 3-2. Sensor check point
Sensor name Check point
Open Cover Sensor CN4 / Pin 1 and 2
PE Sensor CN3 / Pin 1 and 2
TROUBLESHOOTING
Drive Voltage Resistance
22.7Ω ± 10%
DC 42V±5%
21.2Ω ± 10%
Signal level Switch mode
Less than 0.4V Off: Case opened
More than 2.4V On: Case closed
Less than 0.4V Off: No paper
More than 2.4V On: Detect the paper
Troubleshooting
Revision C
37
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