Sony HVL-F58AM - Manual (Page 83)

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83
Maintenance
Remove this unit from the camera. Clean the flash with a dry soft cloth. If the flash
has been in contact with sand, wiping will damage the surface, and it should
therefore be cleaned gently using a blower. In the event of stubborn stains, use a
cloth lightly dampened with a mild detergent solution, and then wipe the unit clean
with a dry soft cloth. Never use strong solvents, such as thinner or benzine, as these
damage the surface finish.