Types of Batteries

This flash unit uses four AA-size batteries of the same type, as shown below.-Alkaline battery (LR6)-Lithium battery (FR6)-Nickel-Metal Hydride battery (Ni-MH)(Nickel manganese (Ni-Mn) and nickel cadmium (Ni-Cd) batteries cannot be used.)

●For information about recycling times and total number of flashes, refer to “Specifications” on page 88.

●If the indicators on the LCD panel or the ready lamp does not light up, the batteries may be exhausted or not inserted correctly. Verify the orientation of the batteries or, if the indicators and ready lamp still do not light up, replace them with new batteries.

●If you let the flash unit fire successively using lithium batteries, the batteries will overheat, activating a safety circuit that temporarily disables the flash unit. If this occurs, rest the flash unit so that the temperature of the batteries returns to normal.

■Using the Optional External Power

Source

Use the optional TR Power Pack-3 (upcoming product, sold separately) as an external power source.

●For information on how to use the TR Power Pack-3 and connect to the flash unit, refer to the manual provided with the TR Power Pack-3.

●For information on how to recharge the flash unit using the TR Power Pack-3, refer to “Charging the AF540FGZ with the Optional External Power Source” on page 16.

●The TR Power Pack-2 cannot be used with the AF540FGZ for mechanical reasons.The external power source uses six C-size alkaline batteries (LR14).(Nickel cadmium (Ni-Cd) batteries cannot be used in the TR Power Pack-3.)

If charging time takes more than 20 seconds, the batteries have been exhausted and should be replaced with new batteries. If the flash unit is used with exhausted batteries, the settings may return to their default configuration.

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