Troubleshooting; Motor And Sensor Troubleshooting - Epson Artisan 810 Service Manual

Epson Artisan 810/835/837/710/725/730/Epson Stylus Photo PX810FW/TX810FW/PX820FWD/TX820FWD/PX830FWD/PX710W/TX710W/PX720WD/TX720WD/PX730WD/TX730WD

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.
Motor
CR motor
PF motor
Decompression motor
Scanner motor
ADF motor
Sensors
Sensor name
PE Sensor
(Transmissive photo interrupter)
Scanner Cover Open Sensor (1)
(GMR sensor)
Scanner Cover Open Sensor (2)
(GMR sensor)
PW Sensor
(Reflective photo interrupter)
Duplex Unit Sensor
(Mechanical contact points)
Photo Tray Sensor
(Mechanical contact points)
Power Supply Voltage
Board
Power Supply Board
TROUBLESHOOTING
Table 3-1. Motor resistance and check point
Motor Type
DC motor with brush
4-phase, 96-pole PM stepping motor
Table 3-2. Sensor check point
Check point
Main Board: Pin1-Pin2 of CN9
Main Board: Pin1-Pin2 of CN10
Main Board: Pin2-Pin4 of CN10
Main Board: Pin2-Pin3 of CN6
Main Board: Pin1-Pin2 of CN13
Main Board: Pin1-Pin2 of CN12
Table 3-3. Power supply voltage and check point
Check point
Pin1-Pin4 of CN2
Pin2-Pin5 of CN2
For the position of each sensor/motor, see
C H E C K
(p.50).
P O I N T
Check point
Main Board: Pin1-Pin2 of CN21
Main Board: Pin1-Pin2 of CN22
Main Board: Pin1-Pin2 of CN24
Main Board: Pin1-Pin2 of CN49
Main Board: Pin1-Pin3, Pin2-Pin4 of CN25
Signal level
Less than 0.4 V No paper
More than 2.4 V Detects the paper
Less than 0.4 V Scanner Closed
More than 2.4 V Scanner Open
Less than 0.4 V Carriage: at the origin position (where the carriage touches the right frame)
More than 2.4 V Carriage: at HP
0 V (for reference only) Detects the paper
3.3 V (for reference only) No paper
Less than 0.4 V Duplex Unit attached
More than 2.4 V No Duplex Unit
Less than 0.4 V Photo Tray in use
More than 2.4 V Photo Tray retracted
42.0 V ± 5%
42.0 V ± 5%
Troubleshooting
"2.1.3 Motors & Sensors"
Resistance
19.7 Ω ± 10%
19.7 Ω ± 10%
88 Ω ± 15%
(TBD)
28.0 Ω ± 7%/phase (25
Switch mode
Output voltage
Revision G
Ω
o
C)
62
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