Canon 540EZ - Speedlite - Hot-shoe clip-on Flash Руководство - Страница 28
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Troubleshooting
Numbei
Symptom
Cause
i he lock nut was not loosened enough to release the lock pin.
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Reference
page
6
1
o
The flash unit cannot be removed from the cam¬
era.
<L
3
The flash does not fire even if the shutter button
is pressed.
The flash is not mounted completely or securely onto the cam¬
era s accessory shoe.
Mount the flash unit securely onto the accessory shoe.
6
The contacts on the camera's accessory shoe are dirtv or the
contacts on the flash foot are dirty.
Wipe the contacts clean with a clean cloth.
6
The flash unit's entire LCD panel display goes
off while the power is still turned on.
The main switch is set to "SE". At the SE position, the power
automatically turns off after 90 seconds of inactivity.
Change the main switch setting to 1, or press the shutter button
halfway to reactivate the power.
7
4
The entire display blinks when the main switch
is turned on.
The wide panel is protruding slightly from its housed position
Make sure the wide panel is fully retracted.
9
stilfin lace^ S SS l° 3 bounce Posi,lon with the wide panel Make sure the wide panel is retracted.
9
0
6
The coupling distance range display blinks
when the shutter button is pressed halfway.
The flash head is in the 7° downward position.
When not shooting at a close distance, set the flash head to a
position other than the 7° downward position.
23
y
i rie nasn aoes not fire even though it is con-
nected to an external power supply loaded with
new batteries.
There are no batteries loaded in the 540EZ, or else the 540EZ's
batteries are depleted.
Make sure, fresh batteries are loaded in the 540EZ even when
using an external power supply.
5
f
o
Even though the flash is connected to an. exter¬
nal power supply loaded with new batteries, the
zoom mechanism moves by itself or the Lcd
panel display goes off after the main switch is
turned on.
The 540EZ's internal batteries are depleted. To check the bat¬
tery condition, disconnect the external power supply and mea¬
sure the recycle time with the internal batteries alone. If the
ready lamp does not light within 30 seconds after turninq on the
power, the batteries are depleted.
a
Replace the 540EZ's internal batteries with new ones.
5
O
Q
A dark strip appears at the bottom of a flash
photograph.
The shooting distance was too close.
When taking pictures of subjects closer than 2m / 6.6ft, set the
flash head to the 7° downward position.
24
y
in
In a photograph composed with the subject
positioned near the edge of the picture, the sub¬
ject is overexposed by the flash.
Flash control for the subject exposure was not performed well.
When using an EOS camera with multiple AF points, first com-
pose the picture and then focus the subject using a manually
selected focusing point. When using an EOS camera with only
one AF point, compensate the flash exposure by an appropriate
amount in the minus direction.
w "
17
l U
A
-♦
When taking a flash picture of a subject stand¬
ing in front of a glass window, the subject's face
turned out dark in the photograph.
Bright light reflected from the window glass caused the subject
to be underexposed.
J
riiuler -Mke lhe picture from a position where the reflected flash
light will not enter the camera lens, or compensate the flash
exposure by an appropriate amount in the nine dirprtinn
17
1 1
When taking a flash picture of a subject dressed
in black, the subject's face turned out very white
in the photograph.
Due to the low reflectance of the black clothes, the overall expo¬
sure overexposed the subject's face.
^
Compensate the flash exposure by an appropriate amount in the
minus airection.
17
1C
•f Q
Flash photographs appear dark around the
edges.
The manually-set flash coverage angle did not sufficiently cover
the focal length of the lens in use.
Set the flash coverage angle to auto zoom mode, or manually
seUhe coverage angle to a focal length shorter than the lens in
8
1 o
Flash photographs are generally over- or under¬
exposed.
The 540EZ's flash exposure compensation function was left set.
Turn off the flash exposure compensation.
17
28