How to change the battery on a casio AW-49H watch

SOURCE: Casio watch

Press MODE until you reach H-S (e.g. A 11:00 with seconds on top)

Press and hold ADJUST for 3 seconds until H-S blinks

Press and hold SEARCH for every movement; you may wanna press LIGHT so the hands will move freely. Press ADJUST again to when desired time was reached

SOURCE: Changing the battery on My Casio watch module 1848. Two

The contact springs most likely have nothing to do with your screen being black.
The watch will have an "AC" or all clear function that needs to be performed. Check the back lid for AC or reset instructions. If there are no instructions there then you will have to visit a watch repairman/technician to have this procedure performed as it involves touching the AC pad on the circuit board to the back of the battery already installed. The circuit board is easily damaged if not performed properly.

SOURCE: casio aw-82

http://world.casio.com/wat/download/en/manual/


Use the four numbers on the back of your watch and you will have a PDF version of your instruction manual.

Hope this tip helps
R/
David

SOURCE: How do i adjust the

push the mode button to the h-s mode, then hold down the adjust button for 3 second then you can adjust the hand by using the search button only

SOURCE: I cannot find a manual for my Casio 384 AW-20 watch.

Here you can find user manual for casio 384 modul!!!
http://www.digitalwatchlibrary.com/DWL/1work/casio-aw-20/