Canon SPEEDLITE EL-1 Advanced User's Manual page 93

3.
Clear the settings.
Press the joystick to the left or right, turn <
select, then push the joystick vertically.
The Speedlite settings are cleared, and normal shooting and
<
Note
Even when the settings have been cleared, the transmission channel and wireless
radio ID for wireless shooting as well as the settings of the Custom Functions
(C.Fn) and Personal Functions (P.Fn) will not be cleared.
> flash mode will be set.
93
> to select < > to