Canon SPEEDLITE 540EZ Service Manual page 31
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Also See for SPEEDLITE 540EZ:
- Instruction book (37 pages) ,
- Manual (36 pages) ,
- Parts catalog (12 pages)
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Part 2: Technical Information
2) External power sources
External power sources developed for the 430EZ can also be used with the 540EZ
by connecting them to the 540EZ's external power source terminal. One point of
difference between the 540EZ and 430EZ, however, is that whereas the 430EZ is
designed to prohibit its quick charging function when connected to an external
power source (other than the Compact Battery Pack E power booster) in order to
prevent the possibility overheating the flash head during continuous shooting, the
540EZ features an improved design which allows quick charging regardless of the
power source. Also, whereas the 430EZ could use its built-in power source in
parallel with an external power source only when using the Compact Battery Pack
E, the 540EZ is designed to operate this way with all external power sources.
Power source pack
Available batteries
1. Laminate Pack E
One 0210-type 315V laminate batte
2. Transistor Pack E
Six C-size alkaline-manganese batteries
Six C-size Ni-Cd batteries
Ni-Cd battery
pack
3. Compact Battery Pack E
Six AA-size alkaline-manganese batteries
Six AA-size Ni-Cd batteries
AA-size lithium batteries cannot be used.
1.10 Display panel warning indications
(1) Too-close warning in manual firing mode
In manual firing mode, the correct shooting distance is indicated in the
display, but if the shooting distance becomes less than 0.5 m, the indicator
blinks.
(2) Flash head 7° downward position warning
Since this head position is for use in close-up shooting situations only, the bar
segments for 3m and above — and invalid bar segments for 2m and below —
blink continuously.
(3) Warning when wide panel is used with the head in an upward or lateral
bounce position
Use of the wide panel is not recommended when using bounce flash because
there is a possibility of some light from the flash directly illuminating the
subject, resulting in an unnatural effect. Accordingly, the entire display blinks
to warn the user when the wide panel is left in place when the head is moved
from the front-facing position.
(4) Catchlight flash head position warning
The catchlight function is designed to operate with the flash head directed
forward and upward at an angle of 90°, with the wide panel positioned
vertically as a mini reflector.
If the wide panel is in the catchlight position while the flash head is in the
standard or 7° downward position, the entire display blinks to warn the user.
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