O3: Cr Horizontal Position Error - Epson DFX-9000 Repair Manual

Epson DFX-9000 Field Repair Guide

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
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.
Troubleshooting Printer Component, Software Item,
(See note below). The SP Motor should have 0.88 -
LCD Display, Printer Button
3/29/07
Page 120.