There are four tray full sensors mounted on the same vertical support.
Tray Full Sensor 1: 25%  | |
Tray Full Sensor 2: 50%  | |
Tray Full Sensor 3: 75%  | |
Tray Full Sensor 4: 100%  | 
Preparation
Remove these parts:
- Rear lower cover (Rear Lower Cover, Rear Upper Cover)
 - Rear upper cover (Rear Lower Cover, Rear Upper Cover)
 - Left cover (Left Cover)
 
Tray Full Sensors 1, 2, 3
- The pawls of these sensors are visible behind the frame (
x1,
x5 each)
 
Tray Full Sensor 4
See the next procedure below.