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3-14 Maintenance
NovaJet 500/630/700 Series Service Manual
Power Feed and Take-Up Motor Winding
Resistance Check
Figure 3-9. Power Feed and Take-Up Motor.
1. Remove the feed and/or take-up roll from the printer.
2. Using Phillips screwdriver, remove the four screws that secure
the cradle idler from the right leg.
3. Ease the cradle idler off of the leg enough to disconnect the
motor wires from the leg harness.
4. Using a standard ohmmeter or multimeter, measure between
the + and - connections on the motor. While manually rotating
the servo motor, monitor the readings on the meter. The
acceptable range is 25-40 ohms. Typically, the reading is 29-36
ohms.
5. If the measurement is found to be unsatisfactory, replace the
motor.
6. Perform the same procedure on the remaining motor.