Sony HVL-F32M Operating Instructions Manual page 19

Charge progress indicator
The color of the charge progress indicator shows the charging status for
the flash operation.
• Green Fully charged
• Yellow About 75% charged
• Orange About 50% charged
• Red About 25% charged
The photo will be under-exposed because of a lack of luminescence if
taken before charging is complete.
Note on continuous flash use
If you use the flash unit repeatedly over a short period, the built-in
safety circuit may limit firing flashes and increase the interval between
each flash.
If the internal temperature rises too high, the charge progress indicator
will blink in red and you will be unable to use the flash unit for a while. In
this case, turn the flash unit off for about 10 minutes to allow it to cool.
• Be careful when you take out the batteries, since they may be heated
after continuous flash use.
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