Epson Stylus CX4300 Service Manual page 45

EPSON Stylus CX4300/CX4400/CX5500/CX5600/DX4400/DX4450
Occurrence
timing Detailed phenomenon
CR position
Paper is being resent during paper
feeding operation.
• Operation
• Outside HP
When turning on the power, the Carriage
Unit move to the home position
correctly. But, the paper feeding
sequence is performed without loading
paper in the paper loading sequence.
The leading edge of paper does not go
• Operation
through between the EJ Roller Unit and
• –
the Star Wheel.
* The Carriage Unit can move to home position even if the Torsion Spring 0.22 comes off. However, the PE Sensor Lever keeps the high signal condition in the next operation. Therefore, the paper
jam error is detected.
** In case that the paper jam error occurs in each operation, the jammed paper contacts the nozzle surface of the Print Head and the Print Head may be damaged.
TROUBLESHOOTING
Table 3-11. Check point for paper jam error according to each phenomenon
Defective
unit/part name
1. Check if the Extension Spring Retard operates correctly
in the paper loading sequence.
Back side of ASF Unit
ASF Unit
1. Check if the Torsion Spring 0.22 is properly installed.
Paper Guide Upper
Unit*
1. Check if the EJ Frame Assy is correctly assembled.
EJ Frame Assy**
Troubleshooting
Check point
Extension Spring Retard
EJ Frame Assy
Revision A
Remedy
1. Set the Extension Spring Retard between the
Retard Roller Unit and the ASF Frame.
1. Set the Torsion Spring 0.22 between the
Holder Shaft and the PE Sensor Lever.
1. Reassemble the EJ Frame Assy correctly.
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