Service manual

EPSON Stylus Photo R340/350 Revision A
Troubleshooting Troubleshooting 14
• Occurrence
Timing:
At power-on
• CR Position:
Anywhere
The printer does not start up at all by
turning the power On.
Power Supply
Board Assy.
1. Check if the Power Supply Board cable is correctly
connected to CN1 on the Main Board.
1. Correctly connect the Power Supply Board
cable to CN1 on the Main Board.
2. Check if the Power Supply Board cable or the Power
Supply itself is damaged.
2. Replace the Power Supply Assy. with a new
one.
* If the problem still occurs after performing
the above remedies, replace the Main Board
Assy. with a new one.
• Occurrence
Timing:
During
operation
• CR Position:
---
The initialization sequence at power-on
is performed properly. However, a
communication error occurs (an error
message is displayed on STM3 screen)
when a print job is sent to the printer.
USB Cable 1. Check if the printer is correctly connected to the
computer with a USB cable.
1. Correctly connect the printer to the computer
with a USB cable.
Printer driver 1. Check if the Stylus Photo R340/350 driver is used for
the print job.
1. Install the Stylus Photo R340/350 printer
driver on the computer.
Main Board 1. Verify that the model name written in the EEPROM on
the Main Board is correct.
1. Correct the model name stored on the
EEPROM using the Market Setting menu in
the Adjustment Program.
Table 1-4. Troubleshooting of Communication Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
Symptoms Failed Part Check Point Remedies
CN1
Power Supply
Assy.
Power Supply Board
Cable