Epson DFX-9000 Field Repair Guide
3/29/07
Troubleshooting
Printer Component,
Software Item,
LCD Display,
Printer Button
Page 125.
OD: No Head Error
Cause: Could not detect the presence of the
Print Head
. During power-on initialization, the print head thermistor is
checked. This error is caused by not getting a valid reading from the print head thermistor.
Action:
1.
Check that the
Print Head
is fully seated.
2.
Inspect the
Carrier Cable Unit
(FFC) for physical damage and proper seating in its connectors (CNFHD1,
CNFHD2,CNRHD1, and CNRHD2 on the
ROM Board
).
3.
Test the print head thermistor with an ohmmeter by placing the ohmmeter leads across contacts SEN1 and
SEN2 of the
Print Head
. The resistance value should be approximately 1k - 15k ohms, depending on the
internal temperature of the
Print Head
. The warmer the
Print Head
, the lower the resistance reading.
4.
Replace the
ROM Board
.
OE: Head Driver Error
Cause: At least one pin of the
Print Head
has been energized for an excessive period of time.
Action:
1.
Inspect the
Carrier Cable Unit
(FFC) for physical damage.
2.
Replace the
ROM Board
.
3.
Replace the
Carrier Cable Unit
.
4.
Replace the
Print Head
.
