How to Repair a Stepper Motor Control in a Digiplan CD35

Stepper motor controls run the CD drive in the Digiplan CD35.

The Parker Digiplan CD35 is a CD drive controlled by a stepping motor. Stepping motors provide power to the CD drives. The CD35 operates at either 200 or 400 steps, and comes with a mini-stepping card that increases resolution by a factor of either 5 or 10. If the motor doesn't move, there could be a number of causes. Check each one to determine which part is at fault, and then replace the affected part.

Things You'll Need

• Ohm meter
• Soldering iron
• Tweezers

Instructions

1. Check the AC power with an ohm meter, and replace the AC power cord if there is no power.

2. Check that the DIP switches are properly set. Refer to the manual's motor selection table to properly set the switches for your CD drive configuration.

3. Disconnect the AC power. Monitor the continuity between the motor and drive with an ohm meter. Replace any faulty cables.

4. Make sure the drive is properly seated in the DIN connector on the motherboard.

5. Disconnect the AC power, remove the drive and inspect the fuse on the motherboard. If the fuse is blown, use a soldering iron to remove the solder and remove the fuse with tweezers. Replace the fuse and solder the new fuse to the board in the same spot.

6. Make sure that all of the limit switches are set to "Off" and that the limits are disabled.

References

• Compumotor: CD Stepper Drive & CC Rack System User Guide
• Parker Motion & Control: Drive Technologies
• Omega Engineering Technical Reference: Introduction to Stepper Motors and Drives