User's Manual

The Other YN-622C User Guide
14/09/2012 Page 17 of 18
TROUBLE SHOOTING
Fails to power on or automatically shuts down
• The batteries are installed incorrectly or are exhausted. The device will power down
automatically before the battery is fully depleted to avoid being over-discharged.
• Install a fully charged battery according to the battery compartment indicators.
• Battery level low indicator – half-shutter, and Status LED will wink Red/Green quickly.
The flash doesn't fire
• Ensure the power of all devices are fully charged, and flash is recycling in time.
• Check the connection between the 622 and camera, and 622 and flash.
• Ensure that the indicators show matching channels and lighting groups.
• Check that flash is not in overheating protection, or ongoing zoom adjustment, or in sleep
status.
• Use the Pilot button to test the flash.
Can't access the external flash function menu
• The transmitter is not installed correctly. Re-seat.
• The contacts of the hot shoe are dirty. Clean both sets of contacts, including the rails
• The battery is exhausted. Replace.
The on-top flash doesn't fire
• Enable the Master Flash firing in the wireless menu setting.
Can't set the flash zoom via camera menu
• When the Mixed Control mode has been set in the transmitter, or zoom locking has been
set in the receiver, zoom can't be set via camera menu.
• The Zoom setting of the on-top flash needs to be set separately.
Unable to set channel 5, 6, 7 via camera menu
• The camera can only set channels 1 to 4. Set other channels using [CH SET]..
E-TTL underexposure or overexposure:
• Suggest enabling wireless flash function when using E-TTL flash mode, and adjust the
position of the flash, use FEC/FEL function, check flash’s effective range.
• It may overexpose when E-TTL and manual flash are used at the same time; the manual
flash suits being used as a backlight.
Can’t disable selected firing groups
With canon cameras, you can only disable group C by selecting "firing group" to A:B. Group A/B is
always fired no matter whether you select "ALL", "A:B", "A:B:C" or disable Wireless function.
Aperture, distance are not displayed on the flash when half pressing the shutter
• Set compatible flash mode/shutter sync with the flash on the transmitter.
Flashes are emitting an unwanted pre-flash
• If the flash’s mode is E-TTL, it will emit a preflash. If the flash’s mode is Manual or Multi, it
won't.