Yongnuo Speedlite YN860Li, Instruction Manual

1 .Power does not turn on or the flash dose not fire.

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Make sure that the batteries are installed in the correct orientation.

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Please check if the speedlite is in overheat protection status. 

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lf the electrical contacts of the speedlite and camera are dirty, clean the contacts.

2.The flash automatically shut off the power.

Please check if the flash enable the power saving mode or whether the battery power is enough.

3.Vignetting appears in photos or only part of the subject is illuminated. 

Please check the current coverage of focal length and make sure if the lens focal length exceeds the 
coverage  range  of  the  flash.  The  product's  zooming  range  is  20~105  mm  of  the  medium  format 
system. You can try to pull out the wide-angle diffuser to expand the flash range.

4.Radio Transmission Slave Unit 

Please set the radio transmission master control unit and save unit to be in the same channel, please 
set  the  communication  modes  of  radio  transmission  master  control  unit  and  save  unit  to  be 
consistent(RF602  or  RF603),in  slave  mode,  the  speedlite  cannot  flash  when  installed  on  the  camera, 
please set the flash mode to be on-camera mode.

5.Other problems.

Try  to  clear  the  settings  of  flash  and  camera, try  to  disable  the  flash power  source  and  then  
restart  the  flash.  

The  functions  of  this  user  manual  are  based  on  test  conditions  of  our company. Further  
notice  will    not  be    given  if  the  design  and  specifications  change.  The  YONGNUO    logo    in    this   
manual  includes  the  registered trademark  or  trademark  of  Shenzhen  Yongnuo  Photography 
Equipment  Co.,Ltd  in  China  or/and  other  countries(regions).  All  other    trademarks  are  the 
property of their respective owners.

dose not fire.

Troubleshooting 

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