Epson Stylus CX3700 Service Manual page 67

EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850
Occurrence
timing Detailed phenomenon
CR position
• Power on
When turning on the power, the SPC
does not operate at all.
• Anywhere
When turning on the power, the
power on sequence is performed
• Operation
correctly. But, when any printer job
• –
is sent to the SPC, a communication
error is indicated with STM3.
TROUBLESHOOTING
Table 3-6. Check point for the communication error according to each phenomenon
Defective
unit/part name
1. Check if the PS Board Connector Cable is connected to
the CN10 on the Main Board.
PS Board Unit
2. Check if the PS Board Connector Cable/PS Board is not
damaged.
1. Check if the USB Cable is connected between the SPC
USB Cable
and the PC.
1. Check if an incorrect model name is not stored into the
address of the EEPROM on the Main Board.
2. Check if the Panel FFC is connected to the CN12 on the
Main Board.
Main Board Unit
Troubleshooting
Check point
Main Board
CN1
PS Board Connector Cable
PS Board Unit
Panel FFC
CN12
Main Board
Revision A
Remedy
1. Connect the PS Board Connector Cable to
CN1 on the Main Board.
2. Replace the PS Board Unit with new one.
* If the problem is not solved, replace the
Main Board with new one.
1. Connect the USB Cable to the SPC and the
PC.
1. Use the Adjustment Program to write the
correct value to the EEPROM address.
2. Connect the Panel FFC to the CN12 on the
Main Board.
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