Troubleshooting For Motors And Sensors - Epson Stylus Photo PX650 Service Manual

Epson Stylus Photo PX650/TX650/TX659/PX660/PX660 Premium/Artisan 635
 Carriage operates but error indicated
Table 3-19. Carriage operates but error indicated
Cause Check Point
Upper case of scanner is Upper case of scanner is
removed. removed?
Defective main board ---
 LED does not light up
Table 3-20. LED does not light up
Cause Check Point
Connector on the Main Connector CN19 on main
Board is disconnected board is disconnected?
Does the lamp light up when
Defective CIS Unit
the CIS Unit is replaced?
Defective main board ---
 Picture cannot be read clearly
Table 3-21. Picture cannot be read clearly
Cause Check Point
Is the document table (glass)
Soiled document table free from dirt and wiping
mark?
Defective CIS Unit ---
Defective main board ---
TROUBLESHOOTING
Yes/No Remedy
Yes Install the upper case.
--- Replace the main board
Yes/No Remedy
Connect the connector
Yes
CN19 on the main board.
Yes Replace the CIS Unit.
--- Replace the main board
Yes/No Remedy
No Clean the document table.
--- Replace the CIS Unit.
--- Replace the main board
Troubleshooting When There is No Error Display

3.3.6 Troubleshooting for Motors and Sensors

 Motor
Table 3-22. Motor Resistance and Check Points
Motor Name Location
CR motor CN14 (White)
PF motor CN13 (Black)
CR motor (Scanner Unit) CN17 (White)
 Sensor
Table 3-23. Sensor Check
Location
Epson Stylus
Sensor Name
Epson Stylus
Photo PX650/
Photo PX660
TX650/TX659
PE sensor
CN6 Pin 1 & 3
(3.3V DC ±5% )
APG sensor
CN7 Pin 1 & 3
(3.3V DC ±5% )
CD-R Guide
sensor CN4 Pin 1 & 2 CN4 Pin 1 & 2
(3.3V DC ±5% )
CD-R Tray
sensor CN4 Pin 3 & 4 CN9 Pin 1 & 2
(3.3V DC ±5% )
Case Open
Sensor CN5 Pin 1 & 2
(3.3V DC ±5%)
Note : Refer to "2.1.2 Motors and Sensors" (p.36)
Revision C
Check Point Resistance
22.7  ± 10%
Pin 1 & 2
21.2  ± 10%
Pin 1 & 2
Pin 1 & 2 TBD
Signal Level Sensor Status
2.4V or over Paper absent
Less than 0.4V Paper present
2.4V or over PG position
Less than 0.4V Out of PG position
Open: 2.4V or over CD-R Guide down
Close: Less than 0.4V CD-R Guide up
Open: 2.4V or over CD-R Tray present
Close: Less than 0.4V CD-R Tray absent
Open: 2.4V or over Scanner Unit open
Close: Less than 0.4V Scanner Unit closed
for the locations of the motors and sensors.
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