EPSON Stylus CX4900/CX4905/CX5000/DX5000/DX5050/CX5900/CX6000/DX6000/DX6050 Revision A
TROUBLESHOOTING Troubleshooting 95
3.3  Troubleshooting
You can identify the troubles by using the checklist in this section after confirming the LED indication on the SPC. If you connect the SPC to your PC and see an error message on 
the STM3, you can short the total repair time. And, when you find out the defective parts, replace them by referring to Chapter 4 “DISASSEMBLY AND ASSEMBLY”. The 
following tables describe the error check points.
Table 3-6.  Check point for communication error according to each phenomenon
Occurrence 
timing
CR position 
Detailed phenomenon
Defective 
unit/part name
Check point Remedy
• Power on
•Anywhere
When turning on the power, the SPC 
does not operate at all.
Panel Unit
1. Check if the Panel FFC is connected to the CN1 on the 
Panel Board.
<Stylus CX4900/CX4905/CX5000/DX5000/DX5050>
<Stylus CX5900/CX6000/DX6000/DX6050>
1. Connect the Panel FFC to CN1 on the Panel 
Board.
2. Check if the Panel FFC is not damaged.
2. Replace the Panel FFC with new one.
3. Check if the Panel Board is not damaged.
3. Replace the Panel Board with new one.
CN1 Panel BoardPanel FFC
CN1Panel FFC Panel Board