Troubleshooting Guide

No.

Problem

Probable Cause

Solution

Page

 

 

 

 

 

1

I cannot detach the Speedlite

The locking collar has not

Loosen the locking collar

 

 

from the camera.

been loosened enough to

completely to retract the

13

 

 

retract the locking pin.

locking pin.

 

 

 

 

 

 

2

The flash does not fire even

The Speedlite has not been

Mount the Speedlite properly

 

 

when I press the shutter

mounted properly on the hot

and securely on the camera.

13

 

button completely.

shoe.

 

 

 

 

 

 

 

 

 

The hot shoe contacts are

If the contacts are dirty, use a

 

 

 

dirty or the Speedlite’s

clean cloth to wipe them.

13

 

 

mounting foot contacts are

 

 

 

 

 

 

 

dirty.

 

 

 

 

 

 

 

3

After I turn on the Speedlite,

With the main switch set to

Press the shutter button

 

 

the pilot lamp turns off after a

SE, the Speedlite turns off

halfway or press the test

16

 

while.

automatically when it is not

firing button.

 

 

 

 

used for 90 sec.

 

 

4

When I turn on the main

The wide panel is not fully

Retract the wide panel

20

 

switch, the entire display

retracted.

completely.

 

42

 

blinks.

 

 

 

 

 

 

 

 

 

 

 

 

 

The wide panel has been

Retract the wide panel.

20

 

 

extended and the Speedlite is

 

 

 

set for bounce flash.

 

 

5

When I press the shutter

The flash head has been

Except for close-distance

43

 

button halfway, the flash

tilted downward by 7°.

subjects, do not tilt the flash

 

92

 

range bar segments blink.

 

head downward.

 

 

 

6

I installed new batteries in the

Batteries have not been

Even when using an external

 

 

external power source, but

installed in the 550EX itself.

power source, be sure to

10

 

the flash still does not fire.

Or, the batteries in the 550EX

have good batteries in the

 

 

 

 

are exhausted.

550EX.

 

7

I installed new batteries in my

The batteries in the 550EX

Replace the batteries in the

 

 

external power source and

are exhausted. Disconnect

550EX with new ones.

 

 

connected it to the Speedlite.

the external power source

 

 

 

When I turned on the power

and turn on the 550EX. If the

 

10

 

switch, the flash head

pilot lamp does not light

 

 

 

 

 

zoomed automatically. Or the

within 30 sec., the 550EX’s

 

 

 

LCD panel display went out.

batteries are exhausted.

 

 

 

 

 

 

 

8

The flash picture looks dark

The subject was too close to

If the subject is 2 meters or

 

 

toward the bottom.

the camera.

closer, tilt the flash head

 

 

 

 

downward by 7°.

43

 

 

 

 

92

 

 

 

 

 

116

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Image 116
Canon 550EX manual Troubleshooting Guide, 116