Sony HVL-F32X - Manual (Page 20)

20-GB
Meaning of READY lamp states
When it light (orange)
Flash is ready for firing.
When it flashes (orange)
Flash is charging. Firing is not possible.
When it flashes (red)
The batteries are run down.
Replace with new batteries.
(Charging takes longer if the flash has not been used for a long time.)
When the READY does not light
The flashing is prohibited.
(When the digital still camera excepts the shooting mode.)