jcb JS300 Service Manual page 184

Operation
Lifting and Loading
Figure 138.
If the safe operating lift limit is exceeded, the buzzer will sound and the icon in the lower section will turn red.
A red hook notification symbol is also displayed in the right section of the DECU.
When the buzzer sounds and the icon appears, the operator must take the necessary action to lower the lift.
When this is done, the buzzer and icon are cancelled and the system resets automatically.
When the machine is not used for object handling the system must be turned off through the DECU, or the
buzzer may sound and the icon may appear during a digging operation.
All of the lifting operations must be done in accordance with the local lifting regulations.
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