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EPSON Stylus PHOTO 810/820/830 Revision B
Troubleshooting Unit Level Troubleshooting 76
Table 3-10. Communication error condition and possible cause
Error condition
LED indication
STM3 message
Occurrence
timing
CR position at the
power on timing
Unit/Part name Possible cause Check table
Communication
error
Power : Off
Error : Off
Communication error
Power on Anywhere
Main board The Main board is defective.
Refer to Table 3-11
Power supply board
The Power supply connector cable comes off.
The Power supply connector cable is damaged.
The Power supply board is defective.
Operation -
Main board
The incorrect data is stored into the specific address of the
EEPROM.
Parallel cable
The parallel cable does not support the bi-directional
transportation.
Printer driver The suitable printer driver is not installed into the PC.
Table 3-11. Check point for the 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 printer
does not operate at all.
Power supply
board
1. Check if the Power supply connector cable is connected
to CN2 on the Main board.
2. Check if the Power supply connector cable is damaged.
1. Connect the Power supply connector cable to
CN2 on the Main board.
2. Replace the Power supply board with new one.
* If the problem is not solved, replace the
Main board with new one.
Operation
-
When turning on the power, the power
on sequence is performed correctly. But,
when any printer job is sent to printer,
the communication error is indicated
with STM3.
Main board
1. Check if the incorrect model name is stored into the
5F<H> address of the EEPROM on the Main board.
1. Write the 00<H> data into the 5F<H> address
of the EEPROM by using the Dump eve.
program in the Adjustment program.
Parallel/USB cable
1. Check if the Parallel/USB cable is connected between
the printer and the PC.
1. Connect the Parallel/USB cable to the printer
and the PC.
Printer driver
1. Check if the Stylus Photo 810/820/830 printer driver is
used for the printer job.
1. Install the Stylus Photo 810/820/830 printer
driver in the PC.