Yongnuo YN-622C User Manual

7. Can't set the flash zoom via camera menu:
When the mix control mode has been set in the transmitter
(p.21) or zoom locking has been set in the receiver (p.15),
zoom can't be set via camera menu. Zoom setting of the on-
top flash needs to be set separately(p.17).
8. Fail to set channel 5, 6, 7 via camera menu:
This is caused by the camera restriction and it can only set the
channel 1-4 in via camera menu, while other channels can be
set via channel button.
9. ETTL underexposure or overexposure:
Suggest enable wireless flash function when using ETTL flash
mode, and adjust the position of the flash, use FEC/FEL
function, check flash’s effective range. It may overexposure
when ETTL and manual flash are used at the same time, now
the manual flash suits to be used as a backlight.
10.Information of aperture, distance are not displayed on the
flash when half pressing the shutter:
Set compatiable flash mode/shutter sync with the flash on the
transmitter.
11.No effect of the flash exposure bracketing calculation on
receiver:
Set the flash mode which is compatible with the flash.
vIt is suggested using the following procedures to deal
with when other trouble occur during the using:
1). Restart all the equipments.
2). Replace the batteries of the transceivers.
3). Reset the factory set of the transceivers.
4). Reset the factory set of the camera.
5). Install the hot-shoe flash on the camera directly and clear the
custom function of external flash then install it on transceiver
again.
Troubleshooting
27

Yongnuo YN-622C Specifications

Power

battery type	2x AA batteries (1.5v Alkaline or 1.2v NiMH)
standby time	60 hours
max safe trigger voltage on hot-shoe centre pin	6 volts

Connectors

canon hot foot	with locking ring and pin
canon hot shoe	for mounting hot-shoe flash
pc-sync screwlock socket	sync out only

Weight and Dimensions

dimensions	90 x 53 x 25mm (39mm incl. hot-foot)
weight	79gm without batteries