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Service Notice: Speedlite 600EX-RT: Caution When Using Color Filter Holder SCH-E1


Thank you for using Canon products.

When the flash is powered on with the bundled Color Filter Holder SCH-E1 already attached, there are instances where the low battery icon appears and the flash does not power on, even if the batteries have sufficient power.


Speedlite 600EX-RT


When the phenomenon described above occurs, follow the procedure below:   

  1. Detach the Color Filter Holder SCH-E1   
  2. Power on the flash   
  3. Re-attach the Color Filter Holder SCH-E1.

If the phenomenon still occurs after the above workaround has been performed, please contact your nearest Canon service center.


Customer Support Operations
Canon U.S.A., Inc

Contact Information for Inquiries
Canon Customer Support Center
Phone:    1-800-OK-CANON

Email: carecenter@cits.canon.com
Support options and hours of operation: www.usa.canon.com/support