Samsung ML-2851ND/XAZ Service Manual page 103

9) No Power
Description: When system power is turned on, all lamps on the operator panel do not come on.
1. Check if the power input
and SMPS output are normal.
of LED-Panel or LCD window on the
front-cover if the OP panel does not
Service Manual
Alignment & Troubleshooting
2. Check the inferiority
appear after normal
warming-up.
Replace the power supply cord
or SMPS.
1. Replace the control board.
2. Replace the OP panel.
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