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14 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.
14.1 Firmware updates
Flash unit firmware can be updated via the USB port and, within the technical framework,
adapted to the functionality of future cameras.
Further information can be found on the Metz website:
www.metz-mecatech.de
14.2 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
batteries must be sufficient to cause the flash readiness indicator to light up no more than one
minute after the flash unit is switched on.
15 Troubleshooting
If the flash unit does not function as it should, switch it off for approx. 10 seconds via the
button ON/OFF
. Check the camera settings and that the flash unit connection foot is
fitted correctly in camera's accessory shoe.
Clean the visible electrical contacts in camera's hot shoe carefully with a soft cloth,
moistened with pure alcohol (e.g. pure ethanol or pure isopropanol).
Replace the batteries with new batteries or freshly charged rechargeable batteries. The
flash unit should function normally again once it is switched back on. If this is not the
case, contact your local dealer.
Below is a list of some of the problems that may occur when the flash unit is used. For each
item, possible causes and remedies for the problem are listed.
The AF auxiliary light of the flash unit is not activated.
The flash unit is not ready for firing.
The camera is not in "Single AF (S)" or "ONE SHOT" mode.
The camera supports only its own internal AF auxiliary light, e.g. mostly with
mirrorless cameras, compact cameras and bridge cameras.
Various cameras support the AF auxiliary light in the flash unit only by
central AF sensor. If a peripheral AF sensor is selected, then the AF auxiliary light
will not be activated in the flash unit.
19
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