Code 326 sir i have aficio 450 problem toner moter not working but if i move the moter in hand is working how i solve the problem.

Try to stop the motor with your hands if it does not have force or stops in some point changes the motor, if it turns with force cleans the toner hopper must be heavy and the motor cannot move it.
Now the 326 code It is related to the laser. ?¿?¿

The 2nd laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated.
Poor connection between the laser synchronization detector board and the LD unit.
Laser synchronization detector board out of position
Laser synchronization detector board defective
LD unit defective.
Clean the glass and mirror and synchronization detector into the laser unit, can be dirty.
Good luck.

Also common is that the toner itself becomes compacted and not even a good motor can "stir" or add it in. Try a wooden stick like a tongue depressor or something smaller to stir the toner with. Do this carefully for there are other moving parts inside there to consider.

Replace the motor ( AX050117) I have seen that if you have a false add toner the part A2327263 has had the plastic tabs come off in the toner assy and the tabs block the opening to the developer assy. -Carl