Service manual

Epson Stylus Photo PX650/TX650/TX659/PX660/PX660 Premium/Artisan 635 Revision C
TROUBLESHOOTING Troubleshooting When There is Error Display 48
Confidential
DC error
(PF motor)
FBH PF acceleration lock error
An error occurred in the PF
motor operating sequence
 Checking the PF mechanism by visual inspection:
Check the PF mechanism for paper jam or adhesion of foreign matters by visual
inspection.
 Checking the operation of the PF mechanism:
Operate the PF mechanism by hand, and check to see if it operates smoothly.
 Making the following adjustments:
Bi-D Adjustment
PF Adjustment
PW Adjustment
 Checking the following parts and replace the defective one:
Checking the PF Encoder FFC (CN8) for disconnection or breakage
Checking the lead wires of the PF Motor (CN13) for disconnection or breakage
Checking the PF scale for adhesion of dirt or damage (p.90)
Checking the PF encoder for adhesion of dirt or damage (p.90)
Checking the Upper Paper Guides for improper installation (p.102)
Checking the PF Motor and replacing it if necessary (p.91)
Main Board (p.78)
Power Supply Board (p.83)
FEH
PF speed over error
FCH
FAH
Measurement value error in PF Duty
limiting control
EFH Position error in PF BS control
F0H DTY_max error in PF BS control
APG motor
70H APG error (normal drive error)
An error occurred in the APG
operating sequence
 Checking the installation of the APG Sensor:
position of the sensor and connection of the connector (CN7)
 Checking the drive of the APG Unit:
Installation of the composite gear of the ASF Unit - APG Unit
Standalone operation of the APG Unit
Reinstallation of the APG Unit (phase)
 Checking the following parts and replace the defective one:
APG Unit (p.95)
ASF Unit (p.93)
APG Sensor (p.36)
PG Left Cam (p.98)
Main Board (p.78)
Power Supply Board (p.83)
71H APG home seek error
72H Error in APG drive by factory command
Motor drive
time error
D1H CR (PID) drive time-out
The motor kept operating for
more than the specified time.
 Checking the mechanism and operation:
Check the mechanism and operation of the motor in question.
 Checking the connection of the connectors and routing of the lead wires
 Checking the motor in question and the following parts and replacing the defective part:
Main Board (p.78)
Power Supply Board (p.83)
D2H CR (load positioning) drive time-out
D3H PF (PID) drive time-out
D4H PF (BS) drive time-out
Table 3-3. Fatal Errors (continued)
Category Error Code Error Cause Remedy