Service manual

EPSON Stylus Photo R340/350 Revision A
Troubleshooting Troubleshooting 13
1.3 Troubleshooting
Be sure to first check the messages displayed on the LCD or the STM3 screen on a connected computer to identify the cause of the problem quickly. Then troubleshoot the problem
following the instructions given in the tables in this section. When any components to be repaired or replaced are found, see Chapter 2 “Disassembly/Reassembly” to correctly
reinstall or replace the components.
1.3.1 Troubleshooting by Error Message
Table 1-4. Troubleshooting of Communication Errors based on Observed Symptom
Occurrence
Timing
CR Position
Symptoms Failed Part Check Point Remedies
• Occurrence
Timing:
At power-on
• CR Position:
Anywhere
The printer does not start up at all by
turning the power On.
Panel Board/
Panel FFC
1. Check if the Panel FFC is correctly connected to CN1 on
the Panel Board and CN6 on the Main Board.
1. Correctly connect the Panel FFC to CN1 on
the Panel Board and CN6 on the Main Board.
2. Check if the Panel FFC is damaged. 2. Replace the Panel FFC with a new one.
3. Check if the Panel Board is damaged. 3. Replace the Panel Board with a new one.
CN1
Panel FFC
Panel Board
CN6
Main Board