16: O/C Error - Epson DFX-9000 Repair Manual

Epson DFX-9000 Field Repair Guide
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 O/C 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 each of the O/C Motor windings.
Subtract the value obtained in Step 2 from each of the values displayed in Step 3. The result is the actual resistance
of the O/C Motor.

16: O/C Error

Cause: The Roller Unit (Paper Bail) failed to open or close.
Action:
1. Check for proper connections at connectors CNOCS1, CNOCS2, and CNO/C on the Sensor Board.
2. Check for proper connections at connectors CNSEN1 and CNSEN2 on the ROM Board.
3. Test all four (4) windings of the O/C Motor with an ohmmeter
should have 72 - 88 ohms of resistance. If the resistance is incorrect, replace the O/C Motor.
4. 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 O/C 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 each of the O/C Motor windings.
Subtract the value obtained in Step 2 from each of the values displayed in Step 3. The result is the actual resistance
of the O/C Motor.
Troubleshooting Printer Component, Software Item,
(See note below). Each winding of the O/C Motor
LCD Display, Printer Button
3/29/07
Page 130.