Metz mecablitz M400 - Nikon Bedienungsanleitung Seite 170

16 Troubleshooting
No maximum flash range indication appears on the display panel.
The AF measuring beam of the flash unit is not activated.
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The reflector position is not automatically adjusted to the current
zoom position of the lens.
The setting for manual TTL flash exposure correction has no effect.
Automatic switching to the flash sync speed fails to occur.