Troubleshooting; Motor And Sensor Troubleshooting - Epson WorkForce 600 Service Manual
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EPSON WorkForce 600/EPSON Stylus OFFICE TX600FW/BX600FW/EPSON Stylus SX600FW/ME OFFICE 700FW
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 resistance and check point
Motor
Motor Type
CR motor
DC motor with
brush
PF motor
2-phase, 96-pole
Scanner motor
PM stepping motor
4-phase, 96-pole
ADF motor
PM stepping motor
Note *1:
Manufactured by MITSUMI ELECTRIC CO., LTD.
*2 : Manufactured by Oki Electric Industry Co., Ltd
Sensors
Table 3-2. Sensor check point
Sensor name
Check point
PE Sensor
CN7/Pin 1 and 2
Cover Open
CN8/Pin 1 and 2
Sensor
ADF PE Sensor
CN18/Pin 2 and 5
ADF DOC
CN18/Pin 1 and 3
Sensor
TROUBLESHOOTING
Drive Voltage
Resistance
28.8 Ω ± 10 %
21.2 Ω ± 10 %
38.0 Ω ± 10%
DC 42 V ± 5%
43.0 Ω ± 10%
28.0 Ω ± 7 %
Signal level
Switch mode
Less than 0.4 V
Off: No paper
More than 2.4 V
On: Detect the paper
Less than 0.4 V
Off: Cover Close
More than 2.4 V
On: Cover Open
Less than 0.4 V
Off: Document passing
More than 2.4 V
On: Document not passing
Less than 0.4 V
Off: Detect the document
More than 2.4 V
On: No document
*1
or
*2
Troubleshooting
Revision A
47
Confidential
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Troubleshooting
