EPSON Stylus CX3500/CX3600/CX3650/CX4500/CX4600 Revision A
TROUBLESHOOTING Troubleshooting 101
•Power on
•Anywhere
When turning on the power, the Carriage 
Unit collides to the Change Lever 
located to the front side of the printer.
PF Motor
1. Check if the PF Motor Connector Cable is connected to 
CN9 on the Main Board.
1. Connect the PF Motor Connector Cable to 
CN9 on the Main Board.
2. Check if the PF Motor Connector Cable is not damaged. 2. Replace the PF Motor with a new one.
3. Check if the PF Motor operates. 3. Replace the PF Motor with a new one.
Ink System Unit
1. Check if the Compression Spring 2.36 does not come off 
in the Change Lever.
1. Replace the Ink System Unit with a new one.
•Power on
•Anywhere
The Carriage Unit collides with the 
Guide Upper Unit when power is turned 
on.
Paper Guide
Upper Unit
1. Check if the Paper Guide Upper Unit is correctly 
assembled.
1. Reassemble the Paper Guide Upper Unit to 
the Main Frame correctly.
Table 3-15.  Check point for the Fatal error according to each phenomenon
Occurrence 
timing
CR position 
Detailed phenomenon
Defective 
unit/part name
Check point Remedy
Compression Spring 2.36
Change Lever
Paper Guide Upper Unit