Defective Motor Operation - Samsung ML-3561N Service Manual

7.3.8 Defective motor operation

• Description
Main motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'.
Check and Cause
1. The motor harness or motor PCB may be defective.
2. Check the motor operation in the EDC mode.
7.3.9 No Power
• Description
When system power is turned on, all lamps on the operator panel do not come on.
Check and Cause
1. Check if the power input and SMPS output are normal.
2. Check the inferiority of LED-Panel or LDC window on the
front-cover if the OP panel does not appear after normal
warming-up.
Samsung Electronics
Solution
1. Replace the motor unit.
2. Replace the main PBA.
Solution
1. Replace the SMPS.
2. Replace the control board.
Troubleshooting
Service Manual
7-17