Samsung CLP 500N - Manual (Page 145)

M AINTAINING Y OUR P RINTER 6.27
6
12 Firmly push the lock levers on each side towards the top
cover, as shown below, to lock the transfer belt into place.
13 After making sure that the left cover is open, close the top
cover. Make sure that it is securely latched.
C AUTION : Do not try to close the left cover with the top cover
open. This may cause damage to the printer.