HP Laser Jet 3390

b.) Remove two screws from back of printer (callout 12)
d.) Remover four screws (callout 13), and the lift up on top cover to remove it
6. Remove Stapler Assembly (HP Laser Jet 3392 MFP only)
a.) Disconnect one cable connector (callout 14)
b.) Remove two screws (callout 15), separate the stapler assembly from the printer chassis to remove it
12
13
14
15