Epson Stylus PHOTO RX640 Service Manual page 33

EPSON Stylus PHOTO RX640/650
Printer stops during initialization
Condition Cause
Paper Eject Frame not installed
properly
CR Motor not operating
properly
PF Motor not operating
properly
Linear Scale not operating
properly
CR Encoder not operating
properly
Printer error is
indicated.
Rotary Scale not operating
properly
PF Encoder not operating
properly
Head FFC not operating
properly
Head Hot Error generated
Troubleshooting
Table 3-4. Diagnostics when printer stops during format
Check Point
Check to see if the hook securing the Paper Eject Frame has been engaged. Install the Paper Eject Frame properly.
Check for disconnected CR Motor connector.
Check to see if CR Motor coil resistance is as specified.
Check for disconnected PF Motor connector.
Check to see if PF Motor coil resistance is as specified.
Check to see if the Linear Scale is traveling through the CR Encoder.
Check for dirt on Linear Scale.
Check for damaged Linear Scale.
Check to see if Encoder FFC is connected to CR Encoder Board.
Check for paper bits and dust adhering to CR Encoder.
Check for damaged Encoder FFC.
Check for damaged CR Encoder.
Check to see if the Rotary Scale is not traveling through the PF Encoder.
Check for dirt on Rotary Scale.
Check for damaged Rotary Scale.
Check to see if Encoder FFC is connected to PF Encoder Board.
Check for paper bits and dust adhering to PF Encoder.
Check for damaged Encoder FFC.
Check for damaged PF Encoder.
Check for disconnected Head FFC.
Check for damaged Head FFC.
Check to see if ink is emitted from all nozzles.
Troubleshooting When There is No Error Display
Remedy
Check the connector (CN3) of the CR Motor.
Replace the CR Motor.
Check the connector (CN4) of the PF Motor.
Replace the PF Motor.
Enable the Linear Scale to pass through the CR Encoder.
Completely clean the Linear Scale.
Replace the Linear Scale.
Connect the Encoder FFC to the CR Encoder Board.
Remove paper bits and dust adhering to the CR Encoder.
Replace the Encoder FFC (Carriage Assy).
Replace the Carriage Assy.
Enable the Rotary Scale to pass through the PF Encoder.
Completely clean the Rotary Scale.
Replace the Rotary Scale.
Connect the Encoder FFC to the PF Encoder Board.
Remove paper bits and dust adhering to the PF Encoder.
Replace the Encoder FFC.
Replace the PF Encoder.
Firmly connect the Head FFC to the Main Board CN6 ~7 and to the
Printhead.
Replace the Head FFC.
If condition does not improve after cleaning, replace the Printhead.
Revision A
33