Caps lock button doesn't work on my Logitech MX 3200.

SOURCE: Logitech MX 3200

You probably hit the Dynamic Search & Zoom button on the left hand side of your keyboard.
To deactivate the zoom function, press the FN (blue) key, and at the same time the X key (located on the left of the Caps Lock key). You will hear a short beep telling u it's deactivated.

Hope that works for you as it does for me! This wasn't in an instruction manual either, I found how to do it on google.

SOURCE: set correct time on Logitech MX 3200 wireless keyboard

Cordless Desktop MXTM 3200 Laser
To adjust the LCD's time and date:

1. Make sure that the time and date are shown on the LCD. If necessary, press (FN + F9) until the time and date are shown on LCD.
2. Press (FN + F10). You are now in 'Set mode' (you can exit this at any time by pressing the Esckey).
3. Set the correct hour by either typing the numbers on the numeric pad or using the cursor up and down keys, followed by Tab or Enter.
4. Set the correct minutes by either typing the numbers or using the cursor up and down keys, followed by Tab or Enter.
5. Choose either 12-hour clock or 24-hour clock by pressing the cursor up or down keys to switch between the options. Then press Tab or Enter.
6. Set the correct month either by typing the numbers or using the cursor up and down keys, followed by Tab or Enter.
7. Set the correct day either by typing the numbers or using the cursor up and down keys, followed by Tab or Enter.

SOURCE: directions on operation of the logitech mx 3200 key board and mouse

press FN + F10 to set clock etc....

SOURCE: keyboard - Cannot find scroll button

you will have to use the Function key, and look at the pause - break button you see that small icon there, that combined with the function key is scroll lock.

so press the FN key and pause break.

SOURCE: Logitech wireless keyboard MX 3200

Normal 0 Are you using Windows Vista? If you are then go to Control Panel.
1. Click on PRINTERS.
2. When the Printer Properties come up, CLICK on KEY SETTINGS.
3. Then set up the keys by selecting the key to be setup.
Hope this helps. Bud