13 Care and maintenance
Remove dust and grime with a soft dry
cloth or silicon-treated cloth. Do not use
cleaning agents as these may damage
the plastic parts.
13.1 Firmware updates
Flash unit firmware can be updated via
the USB port
and, within the technical
framework, adapted to the functionality
of future cameras.
Checking the software version
• Hold down the TTL button
flash unit whilst pressing the
button.
On the flash unit, the M button
the LED for partial light output
and 1/64 will flash.
The number of flashes shows the soft-
ware version e.g. 1/1 LED flashes once
and the 1/64 LED 3 times to install soft-
ware version 1.3.
Further information can be found on the
Metz website: www.metz.de
M
SL
on the
TTL
and
1/1
1/1 1/2 1/8 1/64
M
SL
TTL
13.2 Flash capacitor forming
The flash capacitor built into the flash
unit undergoes physical change if the
unit is not switched on for a prolonged
period. For this reason it is necessary to
switch the unit on for approximately
10 minutes at least once every three
months. The power supplied by the
power source must be sufficient to cause
the flash readiness indicator to light up
no more than one minute after the flash
unit is switched on.
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