Operation Manual

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10 Care and maintenance
Remove any dirt and dust with a soft, dry cloth. Do not
use any cleaning agents – plastic components could be
damaged.
10.1 Firmware updates
The firmware for the flash unit can be updated via the
USB socket  and can conform to the functions of
future cameras (firmware update).
Checking the firmware version
• Switch off the flash unit; to do this, press button
Ǽ

until all LED displays turn off.
• Switch on the flash unit while holding down the
“TTL”

button, then release the button.
The “TTL”

button on the flash unit blinks, followed by
the “SLAVE” button

.
The number of blink pulses indicates the firmware
version; for example, if the “TTL” button

blinks once
and the “SLAVE” button

blinks 3 times, firmware
version 1.3 is installed.
For more information, visit the Metz homepage at
www.metz-mecatech.de.
10.2 Conditioning the flash capacitor
The flash capacitor built into the flash unit undergoes a
physical change when the device has not been used for
a long time. For this reason it is necessary to switch the
device every three months for approx. 10 mins.
The power supplies must deliver enough power so
that flash standby lights up no later than 1 min after
switching on.