Int 15 Fn 4001  - Compaq Slt/286 Or Portable 386 - Set Lcd/plasma Timeout  [V]

   AX = 4001h
   CL = timeout in minutes, 00h to disable

Return: AL = status
       00h timeout modified
       01h timeout cannot be modified
       40h timeout cannot be modified
   CL = timeout in minutes, 00h if disabled

See Also: AX=4000h,AX=4601h