Samsung ML-1665 Service Manual page 69

Alignment and Troubleshooting
3) Defective motor operation
Description : Main motor is not driving when printing, and paper does not feed into the printer,
resulting 'Jam 0'.
Check the motor harness, replace
1. Motor harness may be defective.
it, if defective.
Replace the Motor or Drive unit,
2. Check the motor operation.
if necessary.
4-21
Service Manual
Samsung Electronics