Casio CZ/ VZ/ FZ - Pro Series

the CZ-1 backlight is out and I have made contact with Sandy at 
electric_sketchbook for a new backlight, but I read thru the manual to 
see if I overlooked a lighting adjusment may have been turned off. I 
read thru the manual and I cannot find any lighting adjustment to make 
the backlight display dim or bright. Is there no adjustment, does the 
light simply turn on when powering up the CZ-1 and likewise turn off 
when powering down ?

Maybe the backlight replacement procedure can be added to the file 
section in the future.

any help appreciated. 

great casio forum !!!