4. Indicate: DRUM LOCK
Solution:
b. Check if there is dust on the code plate or main motor detect sensor: cleaning required.
c. Check the installation of main motor detect sensor and Medium paper jam sensor :
If it is interchange , correct the installation.
d. Check the consumable inside the main motor: if it is possible to change a new one.
Main motor
Consumable
a. Check the mechanic transmission part , if there is mis-installation: correct required.
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