If set to anything other than [OFF] in the main menu → [OTHER FUNCTIONS] → [TALLY LAMP], you can make up the tally lamp light while photographing.
Also, the tally lamp will flash when the following situations occur:
The P2 card has less free space to record and the battery level is low (one time per second)
The P2 card has been removed while being accessed (four times per second)
The P2 card has no more space to record (four times per second)
When the warnings such as the fluctuation of the reference signal for the <GENLOCK IN/VIDEO OUT> terminal and a system error or recording abnormality warning are displayed (four times per second)