Service manual

4. Alignment and Troubleshooting
Service Manual
ML-551x / 651x series
4-121
Samsung Electronics
3. To remove the COVER-DUPELX,
a. Remove 1 screw. Lift up the COVER-DUPLEX PATH to the direction of arrow slightly.
b. Release the both hooks with the tweezers or (-) driver.
4. Check if the fuser is assembled and fuser connector is connected properly.
5. If there is no problem for above steps, reassemble the fuser unit and turn the machine on.
6. If the error persists, execute the Memory Clear.
(Note: Perform a backup fi rst if necessary.)
7. If the problem persists, replace the fuser unit with new one.
8. If the problem persists, replace the engine board.