Epson DFX-9000 Field Repair Guide
3/29/07
Troubleshooting
Printer Component,
Software Item,
LCD Display,
Printer Button
Page 120.
O3: CR Horizontal Position Error
Cause: The
SP Motor
brake signal did not switch on within 3 seconds after turning the printer on.
Action:
1.
Check for obstructions in the
Carriage
area.
2.
Check for proper lubrication of the
Carrier Unit
(Carriage Assy) and
Stay Shaft
(
Carriage Guide Shaft
).
3.
Check the
SP Belt
(
CR Drive Belt
) for proper belt tension (1500-2000 gf).
4.
Inspect the
Left End Sensor
for debris, physical damage, and proper cable seating in its connector.
5.
Inspect the
Carrier Cable Unit
(FFC cable) for physical damage and proper seating in its connectors.
6.
Inspect the
Interlock Switch
for physical damage, bent actuator arm, and proper cable seating in its connector.
7.
Test the
Interlock Switch
with an ohmmeter. If there is no toggle, replace the
Interlock Switch
.
8.
Inspect the
Carriage Encoder Sensor
(
CES Sensor
) for debris, physical damage, and proper cable seating in
its connector.
9.
Test the
Carriage Encoder Sensor
(
CES Sensor
). If there is no toggle, replace the
Carrier Unit
(
Carriage
Assy
).
10. Test the
SP Motor
(
Carriage Motor
) with an ohmmeter (
See note below
). The
SP Motor
should have 0.88 -
1.08 ohms of resistance. If the resistance is incorrect, replace the
SP Motor
.
11. Replace the
ROM Board
.
Note: A weak ohmmeter battery, uncalibrated ohmmeter, and ohmmeter test lead resistance will cause an
inaccurate resistance reading. To obtain an accurate resistance reading, test the SP Motor as follows:
1.
Set the ohmmeter on its lowest resistance scale.
2.
Short the ohmmeter test leads together and note the value displayed on the ohmmeter.
3.
Place the ohmmeter test leads across the
SP Motor
windings.
Subtract the value obtained in Step 2 from the value displayed in Step 3. The result is the actual resistance of the
SP
Motor
.
